WO2018047639A1 - 多環芳香族化合物 - Google Patents
多環芳香族化合物 Download PDFInfo
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- WO2018047639A1 WO2018047639A1 PCT/JP2017/030542 JP2017030542W WO2018047639A1 WO 2018047639 A1 WO2018047639 A1 WO 2018047639A1 JP 2017030542 W JP2017030542 W JP 2017030542W WO 2018047639 A1 WO2018047639 A1 WO 2018047639A1
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Definitions
- the present invention relates to a polycyclic aromatic compound, an organic electroluminescence device using the same, an organic field effect transistor, an organic thin film solar cell, a display device, and an illumination device.
- the organic EL element has a structure composed of a pair of electrodes composed of an anode and a cathode, and one layer or a plurality of layers including an organic compound disposed between the pair of electrodes.
- the layer containing an organic compound include a light-emitting layer and a charge transport / injection layer that transports or injects charges such as holes and electrons.
- Various organic materials suitable for these layers have been developed.
- a benzofluorene compound has been developed (International Publication No. 2004/061047).
- a hole transport material for example, a triphenylamine compound has been developed (Japanese Patent Laid-Open No. 2001-172232).
- an anthracene compound has been developed (Japanese Patent Laid-Open No. 2005-170911).
- the charge transport property of a NO-linked compound (Compound 1 on page 63) is evaluated, but a method for producing a material other than the NO-linked compound is not described, and the element to be linked is not described. Since the electronic state of the entire compound is different if it is different, the characteristics obtained from materials other than NO-linked compounds are not yet known. Other examples of such compounds can also be found (WO 2011/107186, WO 2015/102118).
- a compound having a conjugated structure with a large triplet exciton energy (T1) can emit phosphorescence having a shorter wavelength, and thus is useful as a blue light-emitting layer material.
- a compound having a novel conjugated structure having a large T1 is also required as an electron transport material or a hole transport material sandwiching the light emitting layer.
- the host material of the organic EL element is generally a molecule in which a plurality of existing aromatic rings such as benzene and carbazole are connected by a single bond, phosphorus atom or silicon atom. This is because a large HOMO-LUMO gap (band gap Eg in a thin film) required for the host material is secured by connecting a large number of relatively conjugated aromatic rings. Furthermore, a host material of an organic EL device using a phosphorescent material or a thermally activated delayed fluorescent material also requires high triplet excitation energy (E T ), but the molecule has a donor or acceptor aromatic ring or substituent.
- E T triplet excitation energy
- the present inventors have found a novel polycyclic aromatic compound in which a plurality of aromatic rings are connected by nitrogen atoms and boron atoms, and succeeded in producing the same. Further, the present inventors have found that an excellent organic EL element can be obtained by arranging an organic EL element by arranging the layer containing the polycyclic aromatic compound between a pair of electrodes, thereby completing the present invention. That is, this invention provides the organic EL element material containing the following polycyclic aromatic compounds and also the following polycyclic aromatic compounds.
- a polycyclic aromatic compound represented by the following general formula (1) A polycyclic aromatic compound represented by the following general formula (1).
- a ring, B ring and C ring are each independently an aryl ring or a heteroaryl ring; At least one hydrogen in A ring, B ring and C ring is substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted diheteroarylamino, substituted or Unsubstituted arylheteroarylamino, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted arylsulfonyl, substituted or unsubstituted Diarylphosphine, substituted or unsubstituted diary
- a ring, B ring and C ring are each independently an aryl ring or a heteroaryl ring, At least one hydrogen in A ring, B ring and C ring is substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted diheteroarylamino, substituted or May be substituted with unsubstituted arylheteroarylamino, substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy, or substituted or unsubstituted aryloxy,
- the A ring, the B ring and the C ring have a 5-membered ring or 6-membered ring sharing a bond with the condensed bicyclic structure in the center of the above formula (1) composed of “N”, X 1 and X 2.
- X 1 and X 2 are each independently a divalent group represented by any one of the above formulas (X-1) to (X-12), and both X 1 and X 2 are represented by the formula (X -2) is not a divalent group represented by In formulas (X-1) to (X-12), Ar is each independently aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl, and R a Each independently is alkyl or cycloalkyl, and Ar may be bonded to the A ring, the B ring and / or the C ring by a linking group via carbon or a linking group via boron, provided that When X 1 and X 2 are both divalent groups represented by the formula (X-1), Ar is not bonded to A ring, B ring and / or C ring by a linking group through nitrogen.
- X 1 and X 2 are divalent groups represented by the formula (X-6) or (X-8), Ar in X 1 and X 2 represents an A ring, a B ring, and / or Or it does not bind to the C ring, Ring B and Ring C may be bound by any divalent group of formula (X-3) to formula (X-7), and At least one hydrogen in the polycyclic aromatic compound represented by the formula (1) may be substituted with cyano, halogen or deuterium; Item 9.
- Item 3 The polycyclic aromatic compound according to item 1, represented by the following general formula (2).
- R 1 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein at least one hydrogen is aryl, It may be substituted with heteroaryl or alkyl, and adjacent groups of R 1 to R 11 are bonded together to form an aryl ring or heteroaryl ring together with the a ring, b ring or c ring.
- At least one hydrogen in the ring formed may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein Hydrogen is aryl It may be substituted with a heteroaryl or alkyl, X 1 and X 2 are each independently a divalent group represented by any one of the above formulas (X-1) to (X-12), and both X 1 and X 2 are represented by the formula (X -2) is not a divalent group represented by In formulas (X-1) to (X-12), Ar is each independently aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl, and R a Each independently is alkyl or cycloalkyl, and Ar may be bonded to ring a, b and / or c by a linking group via carbon or a linking group via boron, provided that When X 1 and X
- X 1 and X 2 are divalent groups represented by formula (X-6) or formula (X-8), Ar in X 1 and X 2 represents a ring, b ring and / or Or it does not bond with c ring, the b ring and the c ring may be bonded by any divalent group of the formula (X-3) to the formula (X-7); and At least one hydrogen in the polycyclic aromatic compound represented by the formula (2) may be substituted with cyano, halogen or deuterium. )
- Item 4 The polycyclic aromatic compound according to item 3, which is represented by the following general formula (3).
- R 1 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein at least one hydrogen is aryl, It may be substituted with heteroaryl or alkyl, and adjacent groups of R 1 to R 11 are bonded together to form an aryl ring or heteroaryl ring together with the a ring, b ring or c ring.
- At least one hydrogen in the ring formed may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein Hydrogen is aryl It may be substituted with a heteroaryl or alkyl,
- Each Ar is independently aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl; and
- At least one hydrogen in the polycyclic aromatic compound represented by the formula (3) may be substituted with cyano, halogen or deuterium.
- Item 5 The polycyclic aromatic compound according to item 3, which is represented by the following general formula (4).
- R 1 to R 3 , R 5 to R 10 and R 13 to R 20 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy
- at least one hydrogen may be substituted with aryl, heteroaryl or alkyl
- adjacent groups of R 1 to R 3 , R 5 to R 10 and R 13 to R 20 may be May combine to form an aryl ring or a heteroaryl ring together with a ring, b ring, c ring, d ring or e ring, and at least one hydrogen in the formed ring is aryl, heteroaryl, diarylamino Diheteroarylamino, arylheteroarylamino, alkyl, alkoxy May be substituted with aryloxy, at least
- Item 6 The polycyclic aromatic compound according to item 3, which is represented by the following general formula (5).
- R 1 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein at least one hydrogen is aryl, It may be substituted with heteroaryl or alkyl, and adjacent groups of R 1 to R 11 are bonded together to form an aryl ring or heteroaryl ring together with the a ring, b ring or c ring.
- At least one hydrogen in the ring formed may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein Hydrogen is aryl It may be substituted with a heteroaryl or alkyl,
- Each Ar is independently aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl; and
- At least one hydrogen in the polycyclic aromatic compound represented by the formula (5) may be substituted with cyano, halogen or deuterium.
- Item 7 The polycyclic aromatic compound according to item 3, which is represented by the following general formula (6).
- R 1 to R 10 and R 13 to R 16 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy.
- One hydrogen may be substituted with aryl, heteroaryl or alkyl, and adjacent groups of R 1 to R 10 and R 13 to R 16 are bonded to each other to form a ring, b ring, c ring Or may form an aryl ring or heteroaryl ring together with the d ring, and at least one hydrogen in the formed ring is aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or Even if it is substituted with aryloxy Ku, at least one hydrogen in these Aryl may be substituted with a heteroaryl or alkyl, Each Ar is independently aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl; and At least one hydrogen in the polycyclic aromatic compound represented by the formula (6) may be substituted with cyano, halogen or deuterium. )
- Item 8 The polycyclic aromatic compound according to item 3, which is represented by the following general formula (7).
- R 1 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein at least one hydrogen is aryl, It may be substituted with heteroaryl or alkyl, and adjacent groups of R 1 to R 11 are bonded together to form an aryl ring or heteroaryl ring together with the a ring, b ring or c ring.
- At least one hydrogen in the ring formed may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, wherein Hydrogen is aryl It may be substituted with a heteroaryl or alkyl, X 1 and X 2 are each independently a divalent group represented by any one of the above formulas (X-3) to (X-7), In formulas (X-3) to (X-7), Ar is aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl, and R a is independently Alkyl or cycloalkyl, and At least one hydrogen in the polycyclic aromatic compound represented by the formula (7) may be substituted with cyano, halogen or deuterium. )
- Item 9 The polycyclic aromatic compound according to item 3, which is represented by the following general formula (8).
- R 1 to R 6 and R 9 to R 11 are each independently hydrogen, aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy, or aryloxy,
- One hydrogen may be substituted with aryl, heteroaryl or alkyl, and adjacent groups of R 1 to R 6 and R 9 to R 11 are bonded to each other to form a ring, b ring or c ring.
- At least one hydrogen in the formed ring is aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy which may be substituted, At least one hydrogen kicking aryl may be substituted with a heteroaryl or alkyl
- X 1 , X 2 and X 3 are each independently a divalent group represented by any one of the above formulas (X-3) to (X-7);
- Ar is aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl
- R a is independently Alkyl or cycloalkyl
- At least one hydrogen in the polycyclic aromatic compound represented by the formula (8) may be substituted with cyano, halogen or deuterium.
- Item 10 The polycyclic aromatic compound according to Item 1, represented by any one of the following chemical structural formulas.
- Me is a methyl group
- Mes is a mesityl group
- n-Bu is an n-butyl group
- Et is an ethyl group.
- Item 11 An organic device material comprising the polycyclic aromatic compound according to any one of Items 1 to 10.
- Item 12 The organic device material according to Item 11, wherein the organic device material is an organic electroluminescent element material, an organic field effect transistor material, or an organic thin film solar cell material.
- Item 13 The material for an organic electroluminescent element according to Item 12, which is a material for a light emitting layer.
- Item 14 The material for an organic electroluminescent element according to Item 12, which is an electron injection layer material or an electron transport layer material.
- Item 15 The material for an organic electroluminescent element according to Item 12, which is a material for a hole injection layer or a material for a hole transport layer.
- Item 16 An organic electroluminescence device comprising a pair of electrodes composed of an anode and a cathode, and a light emitting layer disposed between the pair of electrodes and containing the light emitting layer material according to Item 13.
- Item 17 A pair of electrodes composed of an anode and a cathode, a light emitting layer disposed between the pair of electrodes, a material for an electron injection layer according to Item 14, disposed between the cathode and the light emitting layer, and / or Or the organic electroluminescent element which has an electron injection layer and / or an electron carrying layer containing the material for electron carrying layers.
- Item 18 A pair of electrodes composed of an anode and a cathode, a light emitting layer disposed between the pair of electrodes, a material for a hole injection layer according to Item 15, disposed between the anode and the light emitting layer, and An organic electroluminescent device having a hole injection layer and / or a hole transport layer containing a material for a hole transport layer.
- Item 19 The electron transport layer and / or the electron injection layer further disposed between the cathode and the light emitting layer, wherein at least one of the electron transport layer and the electron injection layer is a quinolinol-based metal complex, Item 19.
- the electron transport layer and / or the electron injection layer further includes an alkali metal, an alkaline earth metal, a rare earth metal, an alkali metal oxide, an alkali metal halide, an alkaline earth metal oxide, or an alkaline earth. Containing at least one selected from the group consisting of metal halides, rare earth metal oxides, rare earth metal halides, alkali metal organic complexes, alkaline earth metal organic complexes and rare earth metal organic complexes Item 20.
- Item 21 A display device comprising the organic electroluminescent element according to any one of Items 16 to 20.
- Item 22 A lighting device comprising the organic electroluminescent element according to any one of Items 16 to 20.
- a novel polycyclic aromatic compound that can be used as a material for an organic EL element for example, can be provided, and an excellent organic EL element can be obtained by using this polycyclic aromatic compound. Can be provided.
- a polycyclic aromatic compound in which aromatic rings are connected by heteroelements such as nitrogen, boron, and phosphorus has a large HOMO-LUMO gap (band gap Eg in a thin film) and a high triplet excitation. It was found to have energy (E T ). This is because a 6-membered ring containing a hetero element has low aromaticity, so that the reduction of the HOMO-LUMO gap accompanying expansion of the conjugated system is suppressed, and the triplet excited state (T1) is caused by electronic perturbation of the hetero element. ) SOMO1 and SOMO2 are considered to be localized.
- the polycyclic aromatic compound containing a hetero element according to the present invention has triplet excitation because the exchange interaction between both orbitals becomes small due to localization of SOMO1 and SOMO2 in the triplet excited state (T1). Since the energy difference between the state (T1) and the singlet excited state (S1) is small and shows thermally activated delayed fluorescence, it is also useful as a fluorescent material for organic EL elements.
- a material having a high triplet excitation energy (E T ) is also useful as an electron transport layer or a hole transport layer of a phosphorescent organic EL device or an organic EL device using thermally activated delayed fluorescence.
- these polycyclic aromatic compounds can arbitrarily move the energy of HOMO and LUMO by introducing substituents, so that the ionization potential and electron affinity can be optimized according to the surrounding materials. .
- Polycyclic aromatic compound The present invention is a polycyclic aromatic compound represented by the following general formula (1), and a polycyclic aromatic compound represented by the following general formula (2) is particularly preferable.
- the A ring, B ring and C ring in the general formula (1) are each independently an aryl ring or a heteroaryl ring, and at least one hydrogen in these rings may be substituted with a substituent.
- This substituent is substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted diarylamino, substituted or unsubstituted diheteroarylamino, substituted or unsubstituted arylheteroarylamino (with aryl Amino groups having heteroaryl), substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted arylsulfonyl, substituted or unsubstituted Of diarylphosphine, substituted or unsubstituted diarylpho
- At least one of the A ring, the B ring, and the C ring may be condensed with cycloalkyl.
- the aryl ring or heteroaryl ring is bonded to the central condensed bicyclic structure (N), which is composed of “N”, X 1 and X 2 (hereinafter, this structure is also referred to as “D structure”). It preferably has a 5-membered ring or a 6-membered ring that shares
- the “condensed bicyclic structure (D structure)” means that two saturated hydrocarbon rings composed of “N”, X 1 and X 2 shown in the center of the general formula (1) are condensed. Means the structure.
- the “six-membered ring sharing a bond with the condensed bicyclic structure” means, for example, a ring (benzene ring (six-membered ring)) condensed to the D structure as shown in the general formula (2).
- the aryl ring or heteroaryl ring (which is A ring) has this 6-membered ring” means that the A ring is formed only by this 6-membered ring or includes this 6-membered ring.
- aryl ring or heteroaryl ring having a 6-membered ring means that a 6-membered ring constituting all or part of the A ring is condensed to the D structure.
- a ring (or B ring, C ring) in general formula (1) is the ring a and its substituents R 1 to R 3 (or b ring and its substituents R 4 to R 7 , c) in general formula (2).
- the general formula (2) corresponds to the case where “AC ring having a 6-membered ring” is selected as the A to C rings of the general formula (1). In that sense, each ring of the general formula (2) is represented by lower case letters a to c.
- adjacent groups of the substituents R 1 to R 11 of the a ring, b ring, and c ring are bonded to each other to form an aryl ring or a heteroaryl ring together with the a ring, b ring, or c ring.
- at least one hydrogen in the ring formed may be substituted with aryl, heteroaryl, diarylamino, diheteroarylamino, arylheteroarylamino, alkyl, alkoxy or aryloxy, and these At least one hydrogen in may be substituted with aryl, heteroaryl or alkyl.
- the polycyclic aromatic compound represented by the general formula (2) has the following formulas (2-1) and (2-2) depending on the mutual bonding form of the substituents in the a-ring, b-ring and c-ring. As shown, the ring structure constituting the compound changes. A ′ ring, B ′ ring and C ′ ring in each formula correspond to A ring, B ring and C ring in general formula (1), respectively.
- the A ′ ring, the B ′ ring and the C ′ ring are adjacent to the substituents R 1 to R 11 in the general formula (2).
- the aryl ring or heteroaryl ring formed together with the a ring, b ring and c ring, respectively the condensed ring formed by condensing another ring structure to the a ring, b ring or c ring. It can also be said).
- a ring R 3 and b ring R 4 , b ring R 7 and c ring R 8 , c ring R R 11 and R 1 of the a ring do not correspond to “adjacent groups”, and they are not bonded. That is, “adjacent group” means an adjacent group on the same ring.
- the compounds represented by the above formulas (2-1) and (2-2) are, for example, the formulas (1-5-1), (1-5-37), This corresponds to a compound represented by formula (1-5-41), formula (1-5-80), formula (1-5-110), or the like.
- These compounds include, for example, a benzene ring which is a ring (or b ring or c ring), a benzene ring, an indane ring (dimethyl substituted in the following example), an indole ring, a pyrrole ring, a benzofuran ring or a benzothiophene ring.
- a compound having an A ′ ring (or B ′ ring or C ′ ring) formed by condensation, and the formed condensed ring A ′ (or condensed ring B ′ or condensed ring C ′) is a naphthalene ring.
- Fluorene ring dimethyl substituted in the following example
- carbazole ring indole ring
- dibenzofuran ring dibenzothiophene ring.
- X 1 and X 2 in the general formula (1) are each independently a divalent group represented by any one of the following formulas (X-1) to (X-12), and X 1 and X 2 Are not divalent groups represented by the formula (X-2).
- Ar is each independently substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or substituted or unsubstituted alkyl, and R Each a is independently substituted or unsubstituted alkyl or substituted or unsubstituted cycloalkyl.
- Ar may be bonded to ring A, ring B and / or ring C by a linking group, provided that both X 1 and X 2 are divalent groups represented by the formula (X-1).
- Ar is not bonded to the A ring, the B ring and / or the C ring by a linking group via nitrogen, and at least one of X 1 and X 2 is represented by the formula (X-6) or the formula (X-8).
- a divalent group represented by (II) Ar in X 1 and X 2 is not bonded to the A ring, B ring and / or C ring.
- the “linking group” includes a linking group via carbon (for example,> C (R b ) 2 ), a linking group via boron (for example,> B—Ar), a linking group via oxygen (for example,> B—Ar).
- a linking group via sulfur for example,> S
- a linking group via phosphorus for example, the same groups as those represented by the above formulas (X-3) to (X-7)
- —P ”, etc.
- Examples of bonding through carbon include a compound of formula (4) described later, and examples of bonding through boron include a compound of formula (6) described later.
- R b of the "> C (R b) 2 ' is hydrogen or alkyl
- Ar of the"> B-Ar is the same as Ar in the formula (X-1)
- substituted alkyl Aryl which may be substituted
- heteroaryl which may be substituted with alkyl, or alkyl.
- This rule can be expressed by a compound represented by the following formula (2-3-1) having a ring structure in which X 1 and X 2 are incorporated into the condensed ring C ′ and the condensed ring B ′. That is, for example, a B ′ ring (or a ring formed by condensing another ring so as to incorporate X 2 (or X 1 ) into the benzene ring which is the b ring (or c ring) in the general formula (2) (or C ′ ring).
- the formed condensed ring B ′ (or condensed ring C ′) is, for example, a phenoxazine ring, a phenothiazine ring, an acridine ring, or a phenophosphazine ring.
- the above definition is a compound having a ring structure in which X 1 and / or X 2 is incorporated into the condensed ring A ′, which is represented by the following formula (2-3-2) or formula (2-3-3) But it can be expressed. That is, for example, a compound having an A ′ ring formed by condensing another ring so as to incorporate X 1 (and / or X 2 ) into the benzene ring which is the a ring in the general formula (2). .
- the formed condensed ring A ′ is, for example, a phenoxazine ring, a phenothiazine ring, an acridine ring, or a phenophosphazine ring.
- the definition that “the B ring and the C ring may be bonded by any divalent group of the formula (X-3) to the formula (X-7)”
- ring b and ring c may be bonded by any divalent group of formula (X-3) to formula (X-7)”.
- An example of the combination is a compound of the formula (8) described later.
- Examples of the “aryl ring” that is A ring, B ring and C ring in the general formula (1) include aryl rings having 6 to 30 carbon atoms, preferably aryl rings having 6 to 16 carbon atoms, An aryl ring having 6 to 12 carbon atoms is more preferable, and an aryl ring having 6 to 10 carbon atoms is particularly preferable.
- the “aryl ring” is defined as “an aryl ring formed by bonding adjacent groups of R 1 to R 11 together with a ring, b ring or c ring” defined in the general formula (2).
- the total number of carbon atoms of the condensed ring in which a 5-membered ring is condensed is a carbon having a lower limit. Number.
- aryl rings include monocyclic benzene rings, bicyclic biphenyl rings, condensed bicyclic naphthalene rings, tricyclic terphenyl rings (m-terphenyl, o -Terphenyl, p-terphenyl), condensed tricyclic systems such as acenaphthylene ring, fluorene ring, phenalene ring, phenanthrene ring, condensed tetracyclic systems such as triphenylene ring, pyrene ring, naphthacene ring, condensed pentacyclic system Examples include a perylene ring and a pentacene ring.
- heteroaryl ring that is A ring, B ring and C ring in the general formula (1) include heteroaryl rings having 2 to 30 carbon atoms, preferably heteroaryl rings having 2 to 25 carbon atoms.
- a heteroaryl ring having 2 to 20 carbon atoms is more preferable, a heteroaryl ring having 2 to 15 carbon atoms is more preferable, and a heteroaryl ring having 2 to 10 carbon atoms is particularly preferable.
- heteroaryl ring include a heterocycle containing 1 to 5 heteroatoms selected from oxygen, sulfur and nitrogen in addition to carbon as a ring constituent atom.
- the “heteroaryl ring” is a heteroaryl formed together with a ring, b ring or c ring by bonding adjacent groups of “R 1 to R 11 ” defined in the general formula (2).
- the a ring (or b ring, c ring) is already composed of a benzene ring having 6 carbon atoms, the total number of carbon atoms of the condensed ring in which a 5-membered ring is condensed is lower limit. The number of carbons.
- heteroaryl ring examples include a pyrrole ring, an oxazole ring, an isoxazole ring, a thiazole ring, an isothiazole ring, an imidazole ring (unsubstituted, alkyl substituted such as methyl or aryl substituted such as phenyl), oxa Diazole ring, thiadiazole ring, triazole ring, tetrazole ring, pyrazole ring, pyridine ring, pyrimidine ring, pyridazine ring, pyrazine ring, triazine ring, indole ring, isoindole ring, 1H-indazole ring, benzimidazole ring, benzoxazole ring , Benzothiazole, 1H-benzotriazole, quinoline, isoquinoline, cinnoline, quinazoline,
- At least one hydrogen in the above “aryl ring” or “heteroaryl ring” is the first substituent, which is substituted or unsubstituted “aryl”, substituted or unsubstituted “heteroaryl”, substituted or unsubstituted “Diarylamino”, substituted or unsubstituted “diheteroarylamino”, substituted or unsubstituted “arylheteroarylamino”, substituted or unsubstituted “alkyl”, substituted or unsubstituted “cycloalkyl”, substituted or Unsubstituted “alkoxy”, substituted or unsubstituted “aryloxy”, substituted or unsubstituted “arylsulfonyl”, substituted or unsubstituted “diarylphosphine”, substituted or unsubstituted “diarylphosphine oxide”, substituted or Unsubstituted "diarylphosphine sulf
- Aryl of “aryloxy”, aryl of “arylsulfonyl”, aryl of “diarylphosphine oxide”, aryl of “diarylphosphine oxide”, aryl of “diarylphosphine sulfide” are the above-mentioned “aryl ring” or “heteroaryl ring” Monovalent group.
- alkyl as the first substituent may be either linear or branched, and examples thereof include linear alkyl having 1 to 24 carbon atoms and branched alkyl having 3 to 24 carbon atoms.
- Alkyl having 1 to 18 carbons (branched alkyl having 3 to 18 carbons) is preferable, alkyl having 1 to 12 carbons (branched alkyl having 3 to 12 carbons) is more preferable, and alkyl having 1 to 6 carbons. (Branched alkyl having 3 to 6 carbon atoms) is more preferable, and alkyl having 1 to 4 carbon atoms (branched alkyl having 3 to 4 carbon atoms) is particularly preferable.
- alkyl examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl, n-pentyl, isopentyl, neopentyl, t-pentyl, n-hexyl, and 1-methyl.
- Pentyl 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, n-heptyl, 1-methylhexyl, n-octyl, t-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propyl Pentyl, n-nonyl, 2,2-dimethylheptyl, 2,6-dimethyl-4-heptyl, 3,5,5-trimethylhexyl, n-decyl, n-undecyl, 1-methyldecyl, n-dodecyl, n- Tridecyl, 1-hexylheptyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, n-hepta Sill, n- octadecyl, such as n- eicosyl, and the like
- examples of “cycloalkyl” as the first substituent include cycloalkyl having 3 to 12 carbon atoms.
- Preferred cycloalkyl is cycloalkyl having 3 to 10 carbon atoms.
- More preferred cycloalkyl is cycloalkyl having 3 to 8 carbon atoms.
- More preferred cycloalkyl is cycloalkyl having 3 to 6 carbon atoms.
- This description can also be cited as a description of a cycloalkyl that can be fused to at least one of the A, B and C rings.
- cycloalkyl examples include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, methylcyclopentyl, cycloheptyl, methylcyclohexyl, cyclooctyl, and dimethylcyclohexyl.
- alkoxy as the first substituent includes, for example, straight-chain alkoxy having 1 to 24 carbon atoms or branched alkoxy having 3 to 24 carbon atoms.
- C1-C18 alkoxy (C3-C18 branched alkoxy) is preferred, C1-C12 alkoxy (C3-C12 branched alkoxy) is more preferred, and C1-C6 Of alkoxy (C3-C6 branched chain alkoxy) is more preferable, and C1-C4 alkoxy (C3-C4 branched chain alkoxy) is particularly preferable.
- alkoxy examples include methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, s-butoxy, t-butoxy, pentyloxy, hexyloxy, heptyloxy, octyloxy and the like.
- the first substituent, substituted or unsubstituted “aryl”, substituted or unsubstituted “heteroaryl”, substituted or unsubstituted “diarylamino”, substituted or unsubstituted “diheteroarylamino”, substituted Or unsubstituted “arylheteroarylamino”, substituted or unsubstituted “alkyl”, substituted or unsubstituted “cycloalkyl”, substituted or unsubstituted “alkoxy”, substituted or unsubstituted “aryloxy”, substituted Or unsubstituted “arylsulfonyl”, substituted or unsubstituted “diarylphosphine”, substituted or unsubstituted “diarylphosphine oxide”, substituted or unsubstituted “diarylphosphine sulfide” are described as substituted or unsubstituted As at least one hydrogen in them is replaced by
- Examples of the second substituent include aryl, heteroaryl, and alkyl. Specific examples thereof include the above-described monovalent group of the “aryl ring” or “heteroaryl ring”, and the first substituent. Reference may be made to the description of “alkyl” as a substituent of In addition, in the aryl or heteroaryl as the second substituent, at least one hydrogen thereof is substituted with an aryl such as phenyl (specific examples are described above) or an alkyl such as methyl (specific examples are described above). These are also included in the aryl or heteroaryl as the second substituent.
- the second substituent is a carbazolyl group
- a carbazolyl group in which at least one hydrogen at the 9-position is substituted with an aryl such as phenyl or an alkyl such as methyl is also used as the second substituent. Included in aryl.
- the aryl, heteroaryl, diarylamino aryl, diheteroarylamino heteroaryl, arylheteroarylamino aryl and heteroaryl, or aryloxy aryl of R 1 to R 11 in the general formula (2) are represented by the general formula: Examples thereof include the monovalent group of “aryl ring” or “heteroaryl ring” described in (1). As the alkyl or alkoxy in R 1 to R 11, the description of “alkyl” or “alkoxy” as the first substituent in the description of the general formula (1) described above can be referred. Further, aryl, heteroaryl or alkyl as a substituent for these groups is the same.
- Ar in formula (X-1), formula (X-2), formula (X-5) to formula (X-12) in X 1 and X 2 in general formula (1) is the second substituent described above. It is aryl, heteroaryl or alkyl which may be substituted, and at least one hydrogen in aryl, heteroaryl or alkyl may be substituted with, for example, alkyl. Examples of the aryl, heteroaryl and alkyl include those described above.
- aryl having 6 to 10 carbon atoms for example, phenyl, naphthyl and the like
- heteroaryl having 2 to 15 carbon atoms for example, carbazolyl and the like
- alkyl having 1 to 4 carbon atoms for example, methyl, ethyl and the like
- R a of formula (X-3) and formula (X-4) in X 1 and X 2 of general formula (1) is alkyl or cycloalkyl optionally substituted with the second substituent described above
- At least one hydrogen in alkyl or cycloalkyl may be substituted with, for example, alkyl. Examples of the alkyl and cycloalkyl include those described above.
- R b of a linking group in the general formula (1) "> C (R b) 2 'is hydrogen or alkyl, which above may be mentioned as the alkyl.
- alkyl having 1 to 4 carbon atoms eg, methyl, ethyl, etc.
- Ar in the linking group “> B—Ar” is the same as Ar in formula (X-1), and may be aryl optionally substituted with alkyl, heteroaryl optionally substituted with alkyl, or alkyl.
- examples of these alkyl, aryl, and heteroaryl include those described above. This explanation is the same for the linking group in formula (2).
- all or a part of the chemical structure of the polycyclic aromatic compound represented by the general formula (1) or (2) may be cyano, halogen or deuterium.
- a ring, B ring, C ring (A to C rings are aryl rings or heteroaryl rings), a substituent on A to C rings, Ar and R a in X 1 and X 2
- the hydrogen in the linking group can be substituted with cyano, halogen or deuterium, and among these, all or part of the hydrogen in aryl or heteroaryl can be substituted with cyano, halogen or deuterium.
- Halogen is fluorine, chlorine, bromine or iodine, preferably fluorine, chlorine or bromine, more preferably chlorine.
- a polycyclic aromatic compound represented by any one of the following general formulas (3) to (8) is more preferable.
- the above formula (3) is an NB 2 -based compound, in which the group of the formula (X-1) is selected as X 1 and X 2 .
- R 1 ⁇ R 11 and Ar can be cited to the description of R 1 ⁇ R 11 and Ar in the formula (2), provided that Ar does not bind a ring, b ring and / or c ring.
- the above formula (4) is an NB 2 -C bridging compound, a group of the formula (X-1) is selected as X 1 and X 2 , and Ar in the formula (X-1) is a benzene ring (d ring , E ring) or an aryl ring or heteroaryl ring partially containing a benzene ring, wherein the benzene ring part is bonded to the b ring and the c ring by a linking group “> C (R b ) 2 ”.
- R 1 and R 16 are bonded to each other, and a ring and d ring are connected with> C (—R b ) 2 which is a linking group, and R 3 and R 17 are bonded to form a ring and e ring. May be linked by> C (—R b ) 2 , which is a linking group.
- R 1 to R 3 and R 5 to R 10 the description of R 1 to R 11 in the formula (2) can be cited.
- R 13 may be cited to the description of R 1 ⁇ R 11 also in the formula (2) ⁇ R 20, if adjacent groups among R 13 ⁇ R 20 are bonded together with d ring or e ring An aryl ring or a heteroaryl ring is formed.
- the above formula (5) is an N—NB compound, and is a compound in which a group of the formula (X-1) and a group of the formula (X-2) are selected as X 1 and X 2 .
- R 1 ⁇ R 11 and Ar can be cited to the description of R 1 ⁇ R 11 and Ar in the formula (2), provided that Ar does not bind a ring, b ring and / or c ring.
- the above formula (6) is an N—NB—B cross-linking compound, and a group of the formula (X-1) and a group of the formula (X-2) are selected as X 1 and X 2 , and the formula (X-2) Is a compound in which Ar is a benzene ring (d ring) or an aryl ring or heteroaryl ring partially containing a benzene ring, and the benzene ring part is bonded to the c ring by a linking group “> B-Ar”.
- R 1 to R 10 and Ar can refer to the description of R 1 to R 11 in the formula (2), provided that Ar is not bonded to the a ring, b ring, c ring and / or d ring.
- R 13 can be cited to the description of R 1 ⁇ R 11 in the formula (2) also ⁇ R 16, aryl or together with the d ring if adjacent groups among R 13 ⁇ R 16 are bonded A heteroaryl ring is formed.
- the above formula (7) is an NP 2 compound, and is a compound in which any one of the formulas (X-3) to (X-7) is selected as X 1 and X 2 .
- R 1 - R 11 can be cited to the description of R 1 - R 11 in the formula (2), provided that formula (X-5) Ar in to Formula (X-7) is a ring, b ring and / Or it does not bind to ring c.
- the above formula (8) is an NP 2 -P cross-linking compound, and is a compound in which X 3 for bonding the b ring and the c ring is further introduced in the structure of the compound of the formula (7).
- X 3 is selected from any group of the formulas (X-3) to (X-7) in the same manner as X 1 and X 2 .
- the explanation in the equation (2) can be cited.
- polycyclic aromatic compound of the present invention include, for example, compounds represented by the following chemical structural formulas.
- Me is a methyl group
- Et is an ethyl group
- n Pr is an n-propyl group
- i Pr is an isopropyl group
- n Bu is an n-butyl group
- t Bu is a t-butyl group
- D is a heavy group.
- Hydrogen and Ph are phenyl groups.
- formulas (1-3-1) to (1-3-222), formulas (1-4-1) to (1-4-96), formulas (1-5-1) to Formula (1-5-201), Formula (1-6-1) to Formula (1-6-216), Formula (1-7-1) to Formula (1-7-286), Formula (1- 7-291) to formula (1-7-364), formula (1-8-1) to formula (1-8-72), formula (1-8-85) to formula (1-7-117), Compounds of formula (1-8-130) to formula (1-8-143) are preferred.
- the polycyclic aromatic compound represented by the general formula (1) or (2) is basically composed of an A ring (a ring), a B ring (b ring) and a C ring.
- An intermediate is produced by combining (ring c) with the central nitrogen atom (first reaction).
- a general reaction such as the Buchwald-Hartwig reaction can be used.
- a halogen atom such as bromine is introduced into the intermediate in the subsequent second reaction.
- a general halogenating reagent such as N-bromosuccinimide or bromine can be used for the halogenation (bromination) reaction shown in the following scheme (1).
- the definitions of symbols such as A ring to E ring, a ring to e ring, R 1 to R 20 , R b and Ar used in the following reaction schemes (1) to (8-2) are as described above.
- the definition of each symbol in the formulas (1) to (8) is the same.
- the third reaction is a reaction for introducing X 1 and X 2 that connect the A ring (ring a), the B ring (b ring), and the C ring (c ring).
- X 1 and X 2 are divalent groups represented by the formula (X-1) is shown below.
- the halogen atom at the position where X 1 and X 2 are bonded is subjected to halogen-lithium exchange with n-butyl lithium, sec-butyl lithium, t-butyl lithium or the like.
- a target product can be obtained by introducing an aryl group onto the boron atom by adding a nucleophilic reagent such as an aryl Grignard reagent.
- lithium is introduced at a desired position by halogen-metal exchange, but lithium can be introduced at a desired position also by orthometalation.
- This method is useful because the target product can be synthesized even in a case where halogen cannot be introduced at a desired position of the intermediate due to the influence of a substituent or the like.
- the above synthesis method is appropriately selected, the above synthesis method is appropriately selected, and the raw material to be used is also appropriately selected, so that a substituent is present at a desired position, and X 1 and X 2 are represented by the formula (X-1)
- X-1 and X 2 are represented by the formula (X-1)
- a polycyclic aromatic compound which is a divalent group represented by the following can be synthesized.
- X 1 and X 2 are divalent groups represented by the formula (X-1), and further represented by the general formula (4) having a “carbon-linked linking group” in the molecule.
- a method for synthesizing a polycyclic aromatic compound will be described (scheme (3) below). As shown in the above scheme (2), a tandem Bora Friedel-Crafts reaction is performed as the first reaction, followed by a double bond serving as a precursor of a “carbon-linked linking group”. An intermediate is produced by reacting an aryl Grignard reagent in the chain (first reaction). Examples of this reagent include 2-isopropenyl phenyl Grignard reagent.
- an E isomer / Z isomer may exist in the side chain of the double bond of the intermediate except for an isopropenyl group.
- any mixture of isomers in any ratio can be used.
- the wavy line between R b ′ and the double bond in the above scheme (4) means that any of E-form, Z-form, or isomer mixture in any ratio is included.
- R b ′ is the same R b after the reaction in the above scheme (4) so that two alkyl substituents on the carbon atom of the “carbon-linked linking group” become the same R b. It means an alkyl having an adjusted carbon number or a hydrogen atom. For example, when R b is a methyl group, R b ′ is a hydrogen atom, and the carbon atom of the target “linking group via carbon” is substituted with two methyl groups.
- X 1 is a divalent group represented by the formula (X-2), and X 2 is a divalent group represented by the formula (X-1).
- Examples of the synthesis of polycyclic aromatic compounds represented by (5) and (6) are shown in the following schemes (5) and (6).
- a general reaction such as a Buchwald-Hartwig reaction using 6,13-dihydrodibenzo [b, i] phenazine as a raw material can be used.
- a tandem hetero Friedel-Crafts reaction can be used in the following schemes (5) and (6).
- the second reaction is performed by adding a triarylboron reagent such as triphenylborane and boron tribromide to the arylated diamino compound obtained in the first reaction.
- a triarylboron reagent such as triphenylborane and boron tribromide
- a nucleophilic reagent such as an aryl Grignard reagent
- the compound represented by the general formula (5) in order to synthesize a compound in which Ar is bonded to the ring by a “boron-mediated linking group”, as shown in the following scheme (6), the compound can be obtained by the first reaction.
- the arylated diamino compound thus obtained is reacted with tandem heterofriedel crafts by adding boron triiodide, and then an aryl group is introduced onto the boron atom by adding a nucleophilic reagent such as an aryl Grignard reagent.
- a nucleophilic reagent such as an aryl Grignard reagent.
- a precursor compound can be obtained by further adding sulfur.
- the number of phosphorus substituents to be introduced can be controlled by adjusting the equivalent amount of the phosphorus reagent to be used.
- the precursor compound obtained in the first reaction is reacted with a Lewis acid such as aluminum trichloride to cause a tandem hetero Friedel-Crafts reaction, thereby obtaining the target compound.
- a Lewis acid such as aluminum trichloride
- the compound has a substituent at a desired position, and X 1 and X 2 are any of the formulas (X-3) to (X-7).
- the polycyclic aromatic compound represented by the general formula (7) which is a divalent group represented by the above formula, can be synthesized.
- X 1 and X 2 are a divalent group represented by any one of formulas (X-3) to (X-7), and B ring and C ring (b ring and c ring)
- As the first reaction as shown in the following scheme (8-1), an intermediate halogen atom halogenated with bromine or the like obtained by the method shown in the above scheme (1) is substituted with n-butyllithium, sec-butyl.
- the halogen-lithium exchange is performed with lithium or t-butyllithium.
- a precursor compound can be obtained by adding about 4 equivalents of a compound having a phosphorus-halogen bond, such as bisdiethylaminochlorophosphine, and further adding sulfur.
- the number of phosphorus substituents to be introduced can be controlled by adjusting the equivalent amount of the phosphorus reagent to be used.
- the precursor compound obtained in the first reaction is reacted with a Lewis acid such as aluminum trichloride to cause a tandem hetero Friedel-Crafts reaction, thereby obtaining the target compound.
- a Lewis acid such as aluminum trichloride
- the compound has a substituent at a desired position, and X 1 and X 2 are any of the formulas (X-3) to (X-7). And X 3 that binds the B ring and the C ring (b ring and c ring) is represented by any one of the formulas (X-3) to (X-7):
- the divalent polycyclic aromatic compound represented by the general formula (8) can be synthesized.
- X 1 , X 2 and X 3 are exemplified as boron, nitrogen and phosphorus, but other elements such as silicon, germanium, tin and arsenic are used. Even in this case, for example, by using a Friedel-Crafts reaction of a heteroatom (tandem hetero-Friedel-Crafts reaction) as described in International Publication No. 2012/121398 and International Publication No. 2010/104047, It can be synthesized similarly. In the periodic table, it is generally known that elements of the same family show similar reactivity, so that a reaction that can be performed with phosphorus, for example, can be performed with arsenic of the same family.
- the reagents used for halogen-lithium exchange and orthometalation include alkyllithiums such as methyllithium, n-butyllithium, sec-butyllithium, and t-butyllithium.
- Organic alkali compounds such as lithium diisopropylamide, lithium tetramethylpiperidide, lithium hexamethyldisilazide, and potassium hexamethyldisilazide.
- the bases used in the above schemes (1) to (8-2) include N, N-diisopropylethylamine, triethylamine, 2,2,6,6-tetramethylpiperidine, 1,2,2,6,6. -Pentamethylpiperidine, N, N-dimethylaniline, N, N-dimethyltoluidine, 2,6-lutidine, sodium tetraphenylborate, potassium tetraphenylborate, triphenylborane, tetraphenylsilane, Ar 4 BNa, Ar 4 BK, Ar 3 B, Ar 4 Si (where Ar is an aryl such as phenyl) and the like.
- Lewis acids used in the above schemes (1) to (8-2) include AlCl 3 , AlBr 3 , AlF 3 , BF 3 .OEt 2 , BCl 3 , BBr 3 , GaCl 3 , GaBr 3 , InCl 3 , InBr 3 , In (OTf) 3 , SnCl 4 , SnBr 4 , AgOTf, ScCl 3 , Sc (OTf) 3 , ZnCl 2 , ZnBr 2 , Zn (OTf) 2 , MgCl 2 , MgBr 2 , Mg (OTf) 2 , LiOTf , NaOTf, KOTf, Me 3 SiOTf , Cu (OTf) 2, CuCl 2, YCl 3, Y (OTf) 3, TiCl 4, TiBr 4, ZrCl 4, ZrBr 4, FeCl 3, FeBr 3, CoCl 3, CoBr 3 Etc.
- polycyclic aromatic compound of the present invention those in which at least a part of hydrogen atoms are substituted with cyano, those substituted with deuterium, or those substituted with halogen such as fluorine or chlorine
- a compound can be synthesized in the same manner as described above by using a raw material in which a desired portion is cyanated, deuterated, fluorinated or chlorinated.
- the polycyclic aromatic compound according to the present invention can be used as a material for organic devices.
- an organic device an organic electroluminescent element, an organic field effect transistor, an organic thin film solar cell, etc. are mention
- FIG. 1 is a schematic cross-sectional view showing an organic EL element according to this embodiment.
- An organic electroluminescent device 100 shown in FIG. 1 includes a substrate 101, an anode 102 provided on the substrate 101, a hole injection layer 103 provided on the anode 102, and a hole injection layer 103.
- the cathode 108 provided on the electron injection layer 107.
- the organic electroluminescent element 100 is manufactured in the reverse order, for example, the substrate 101, the cathode 108 provided on the substrate 101, the electron injection layer 107 provided on the cathode 108, and the electron injection layer.
- a structure including the hole injection layer 103 provided above and the anode 102 provided on the hole injection layer 103 may be employed.
- each said layer may consist of a single layer, respectively, and may consist of multiple layers.
- the substrate 101 serves as a support for the organic electroluminescent device 100, and usually quartz, glass, metal, plastic, or the like is used.
- the substrate 101 is formed into a plate shape, a film shape, or a sheet shape according to the purpose.
- a glass plate, a metal plate, a metal foil, a plastic film, a plastic sheet, or the like is used.
- glass plates and transparent synthetic resin plates such as polyester, polymethacrylate, polycarbonate, polysulfone and the like are preferable.
- soda lime glass, non-alkali glass, or the like is used, and the thickness only needs to be sufficient to maintain the mechanical strength.
- the upper limit value of the thickness is, for example, 2 mm or less, preferably 1 mm or less.
- the glass material is preferably alkali-free glass because it is better to have less ions eluted from the glass.
- soda lime glass with a barrier coat such as SiO 2 is also commercially available, so it can be used. it can.
- the substrate 101 may be provided with a gas barrier film such as a dense silicon oxide film on at least one surface in order to improve the gas barrier property, and a synthetic resin plate, film or sheet having a low gas barrier property is used as the substrate 101. When used, it is preferable to provide a gas barrier film.
- the anode 102 serves to inject holes into the light emitting layer 105.
- the hole injection layer 103 and / or the hole transport layer 104 are provided between the anode 102 and the light emitting layer 105, holes are injected into the light emitting layer 105 through these layers. .
- Examples of the material for forming the anode 102 include inorganic compounds and organic compounds.
- Examples of inorganic compounds include metals (aluminum, gold, silver, nickel, palladium, chromium, etc.), metal oxides (indium oxide, tin oxide, indium-tin oxide (ITO), indium-zinc oxide) Products (IZO), metal halides (copper iodide, etc.), copper sulfide, carbon black, ITO glass, Nesa glass, and the like.
- Examples of the organic compound include polythiophene such as poly (3-methylthiophene), conductive polymer such as polypyrrole and polyaniline, and the like. In addition, it can select suitably from the substances currently used as an anode of an organic electroluminescent element, and can use it.
- the resistance of the transparent electrode is not limited as long as it can supply a sufficient current for light emission of the light emitting element, but is preferably low resistance from the viewpoint of power consumption of the light emitting element.
- an ITO substrate of 300 ⁇ / ⁇ or less functions as an element electrode, but at present, since it is possible to supply a substrate of about 10 ⁇ / ⁇ , for example, 100 to 5 ⁇ / ⁇ , preferably 50 to 5 ⁇ . It is particularly desirable to use a low resistance product of / ⁇ .
- the thickness of ITO can be arbitrarily selected according to the resistance value, but is usually used in a range of 50 to 300 nm.
- the hole injection layer 103 plays a role of efficiently injecting holes moving from the anode 102 into the light emitting layer 105 or the hole transport layer 104.
- the hole transport layer 104 plays a role of efficiently transporting holes injected from the anode 102 or holes injected from the anode 102 through the hole injection layer 103 to the light emitting layer 105.
- the hole injection layer 103 and the hole transport layer 104 are each formed by laminating and mixing one kind or two or more kinds of hole injection / transport materials or a mixture of the hole injection / transport material and the polymer binder. Is done.
- an inorganic salt such as iron (III) chloride may be added to the hole injection / transport material to form a layer.
- a hole injection / transport material As a hole injection / transport material, it is necessary to efficiently inject and transport holes from the positive electrode between electrodes to which an electric field is applied. The hole injection efficiency is high, and the injected holes are transported efficiently. It is desirable to do. For this purpose, it is preferable to use a substance that has a low ionization potential, a high hole mobility, excellent stability, and is less likely to generate trapping impurities during production and use.
- a polycyclic aromatic compound represented by the general formula (1) can be used as a material for forming the hole injection layer 103 and the hole transport layer 104.
- photoconductive materials compounds conventionally used as hole charge transport materials, p-type semiconductors, and known materials used in hole injection layers and hole transport layers of organic electroluminescence devices Any one can be selected and used. Specific examples thereof include carbazole derivatives (N-phenylcarbazole, polyvinylcarbazole, etc.), biscarbazole derivatives such as bis (N-arylcarbazole) or bis (N-alkylcarbazole), triarylamine derivatives (aromatic tertiary class).
- polycarbonates, styrene derivatives, polyvinylcarbazole, polysilanes, etc. having the aforementioned monomers in the side chain are preferred, but light emission There is no particular limitation as long as it is a compound that can form a thin film necessary for manufacturing the device, inject holes from the anode, and further transport holes.
- organic semiconductors are strongly influenced by the doping.
- Such an organic semiconductor matrix material is composed of a compound having a good electron donating property or a compound having a good electron accepting property.
- Strong electron acceptors such as tetracyanoquinone dimethane (TCNQ) or 2,3,5,6-tetrafluorotetracyano-1,4-benzoquinone dimethane (F4TCNQ) are known for doping of electron donor materials.
- TCNQ tetracyanoquinone dimethane
- F4TCNQ 2,3,5,6-tetrafluorotetracyano-1,4-benzoquinone dimethane
- the light emitting layer 105 emits light by recombining holes injected from the anode 102 and electrons injected from the cathode 108 between electrodes to which an electric field is applied.
- the material for forming the light-emitting layer 105 may be a compound that emits light by being excited by recombination of holes and electrons (a light-emitting compound), can form a stable thin film shape, and is in a solid state It is preferable that the compound exhibits a strong light emission (fluorescence) efficiency.
- the polycyclic aromatic compound represented by the said General formula (1) can be used as a material for light emitting layers.
- the light emitting layer may be either a single layer or a plurality of layers, each formed of a light emitting layer material (host material, dopant material).
- a light emitting layer material host material, dopant material
- Each of the host material and the dopant material may be one kind or a plurality of combinations.
- the dopant material may be included in the host material as a whole, or may be included partially.
- As a doping method it can be formed by a co-evaporation method with a host material, but it may be pre-mixed with the host material and then simultaneously deposited.
- the amount of host material used depends on the type of host material and can be determined according to the characteristics of the host material.
- the standard of the amount of the host material used is preferably 50 to 99.999% by weight of the entire light emitting layer material, more preferably 80 to 99.95% by weight, and still more preferably 90 to 99.9% by weight. It is.
- the polycyclic aromatic compound represented by the general formula (1) can also be used as a host material.
- the amount of dopant material used depends on the type of dopant material, and can be determined according to the characteristics of the dopant material.
- the standard of the amount of dopant used is preferably 0.001 to 50% by weight, more preferably 0.05 to 20% by weight, and further preferably 0.1 to 10% by weight of the entire material for the light emitting layer. is there. The above range is preferable in that, for example, the concentration quenching phenomenon can be prevented.
- the polycyclic aromatic compound represented by the general formula (1) can also be used as a dopant material.
- Host materials that can be used in combination with the polycyclic aromatic compound represented by the general formula (1) include condensed ring derivatives such as anthracene and pyrene, bisstyrylanthracene derivatives and diesters that have been known as light emitters. Examples thereof include bisstyryl derivatives such as styrylbenzene derivatives, tetraphenylbutadiene derivatives, cyclopentadiene derivatives, fluorene derivatives, and benzofluorene derivatives.
- a well-known compound can be used and desired luminescent color is obtained.
- materials can be selected accordingly. Specifically, for example, condensed ring derivatives such as phenanthrene, anthracene, pyrene, tetracene, pentacene, perylene, naphthopylene, dibenzopyrene, rubrene and chrysene, benzoxazole derivatives, benzothiazole derivatives, benzimidazole derivatives, benzotriazole derivatives, oxazoles Derivatives, oxadiazole derivatives, thiazole derivatives, imidazole derivatives, thiadiazole derivatives, triazole derivatives, pyrazoline derivatives, stilbene derivatives, thiophene derivatives, tetraphenylbutadiene derivatives, cyclopentad
- blue to blue-green dopant materials include naphthalene, anthracene, phenanthrene, pyrene, triphenylene, perylene, fluorene, indene, chrysene and other aromatic hydrocarbon compounds and derivatives thereof, furan, pyrrole, thiophene, Aromatic complex such as silole, 9-silafluorene, 9,9'-spirobisilafluorene, benzothiophene, benzofuran, indole, dibenzothiophene, dibenzofuran, imidazopyridine, phenanthroline, pyrazine, naphthyridine, quinoxaline, pyrrolopyridine, thioxanthene Ring compounds and their derivatives, distyrylbenzene derivatives, tetraphenylbutadiene derivatives, stilbene derivatives, aldazine derivatives, coumarin derivatives, imidazo
- green to yellow dopant material examples include coumarin derivatives, phthalimide derivatives, naphthalimide derivatives, perinone derivatives, pyrrolopyrrole derivatives, cyclopentadiene derivatives, acridone derivatives, quinacridone derivatives, and naphthacene derivatives such as rubrene.
- a compound in which a substituent capable of increasing the wavelength such as aryl, heteroaryl, arylvinyl, amino, cyano is introduced into the compound exemplified as a blue-green dopant material is also a suitable example.
- orange to red dopant materials include naphthalimide derivatives such as bis (diisopropylphenyl) perylenetetracarboxylic imide, perinone derivatives, rare earth complexes such as Eu complexes having acetylacetone, benzoylacetone and phenanthroline as ligands, 4 -(Dicyanomethylene) -2-methyl-6- (p-dimethylaminostyryl) -4H-pyran and its analogs, metal phthalocyanine derivatives such as magnesium phthalocyanine and aluminum chlorophthalocyanine, rhodamine compounds, deazaflavin derivatives, coumarin derivatives, quinacridone Derivatives, phenoxazine derivatives, oxazine derivatives, quinazoline derivatives, pyrrolopyridine derivatives, squarylium derivatives, violanthrone derivatives, phenazine derivatives, phenoxazo Derivatives, thi
- the dopant can be appropriately selected from the compounds described in Chemical Industry, June 2004, page 13, and references cited therein.
- amines having a stilbene structure perylene derivatives, borane derivatives, aromatic amine derivatives, coumarin derivatives, pyran derivatives or pyrene derivatives are particularly preferable.
- the amine having a stilbene structure is represented by the following formula, for example.
- Ar 1 is an m-valent group derived from aryl having 6 to 30 carbon atoms
- Ar 2 and Ar 3 are each independently aryl having 6 to 30 carbon atoms
- Ar 1 to Ar At least one of 3 has a stilbene structure
- Ar 1 to Ar 3 may be substituted
- m is an integer of 1 to 4.
- the amine having a stilbene structure is more preferably a diaminostilbene represented by the following formula.
- Ar 2 and Ar 3 are each independently aryl having 6 to 30 carbon atoms, and Ar 2 and Ar 3 may be substituted.
- aryl having 6 to 30 carbon atoms include benzene, naphthalene, acenaphthylene, fluorene, phenalene, phenanthrene, anthracene, fluoranthene, triphenylene, pyrene, chrysene, naphthacene, perylene, stilbene, distyrylbenzene, distyrylbiphenyl, and distyryl.
- fluorene include fluorene.
- amines having a stilbene structure include N, N, N ′, N′-tetra (4-biphenylyl) -4,4′-diaminostilbene, N, N, N ′, N′-tetra (1-naphthyl) ) -4,4′-diaminostilbene, N, N, N ′, N′-tetra (2-naphthyl) -4,4′-diaminostilbene, N, N′-di (2-naphthyl) -N, N '-Diphenyl-4,4'-diaminostilbene, N, N'-di (9-phenanthryl) -N, N'-diphenyl-4,4'-diaminostilbene, 4,4'-bis [4 "-bis (Diphenylamino) styryl] -biphenyl, 1,4-bis [4′-bis (diphenylamino)
- perylene derivatives examples include 3,10-bis (2,6-dimethylphenyl) perylene, 3,10-bis (2,4,6-trimethylphenyl) perylene, 3,10-diphenylperylene, 3,4- Diphenylperylene, 2,5,8,11-tetra-t-butylperylene, 3,4,9,10-tetraphenylperylene, 3- (1'-pyrenyl) -8,11-di (t-butyl) perylene 3- (9′-anthryl) -8,11-di (t-butyl) perylene, 3,3′-bis (8,11-di (t-butyl) perylenyl), and the like.
- JP-A-11-97178, JP-A-2000-133457, JP-A-2000-26324, JP-A-2001-267079, JP-A-2001-267078, JP-A-2001-267076, Perylene derivatives described in JP-A No. 2000-34234, JP-A No. 2001-267075, JP-A No. 2001-217077 and the like may be used.
- borane derivatives examples include 1,8-diphenyl-10- (dimesitylboryl) anthracene, 9-phenyl-10- (dimesitylboryl) anthracene, 4- (9′-anthryl) dimesitylborylnaphthalene, 4- (10 ′ -Phenyl-9'-anthryl) dimesitylborylnaphthalene, 9- (dimesitylboryl) anthracene, 9- (4'-biphenylyl) -10- (dimesitylboryl) anthracene, 9- (4 '-(N-carbazolyl) phenyl) And -10- (dimesitylboryl) anthracene.
- the aromatic amine derivative is represented by the following formula, for example.
- Ar 4 is an n-valent group derived from aryl having 6 to 30 carbon atoms
- Ar 5 and Ar 6 are each independently aryl having 6 to 30 carbon atoms
- Ar 4 to Ar 6 are It may be substituted and n is an integer from 1 to 4.
- Ar 4 is a divalent group derived from anthracene, chrysene, fluorene, benzofluorene or pyrene
- Ar 5 and Ar 6 are each independently an aryl having 6 to 30 carbon atoms
- Ar 4 to Ar 6 Are more preferably aromatic amine derivatives wherein n is 2 and n is 2.
- aryl having 6 to 30 carbon atoms include benzene, naphthalene, acenaphthylene, fluorene, phenalene, phenanthrene, anthracene, fluoranthene, triphenylene, pyrene, chrysene, naphthacene, perylene, and pentacene.
- the chrysene type includes, for example, N, N, N ′, N′-tetraphenylchrysene-6,12-diamine, N, N, N ′, N′-tetra (p-tolyl) Chrysene-6,12-diamine, N, N, N ′, N′-tetra (m-tolyl) chrysene-6,12-diamine, N, N, N ′, N′-tetrakis (4-isopropylphenyl) chrysene -6,12-diamine, N, N, N ', N'-tetra (naphthalen-2-yl) chrysene-6,12-diamine, N, N'-diphenyl-N, N'-di (p-tolyl) ) Chrysene-6,12-diamine, N, N′-diphenyl-N, N′-bis (4
- Examples of the pyrene series include N, N, N ′, N′-tetraphenylpyrene-1,6-diamine, N, N, N ′, N′-tetra (p-tolyl) pyrene-1,6.
- anthracene system examples include N, N, N, N-tetraphenylanthracene-9,10-diamine, N, N, N ′, N′-tetra (p-tolyl) anthracene-9,10-diamine.
- Examples of coumarin derivatives include coumarin-6 and coumarin-334. Moreover, you may use the coumarin derivative described in Unexamined-Japanese-Patent No. 2004-43646, Unexamined-Japanese-Patent No. 2001-76876, and Unexamined-Japanese-Patent No. 6-298758.
- Examples of the pyran derivative include the following DCM and DCJTB. Also, JP 2005-126399, JP 2005-097283, JP 2002-234892, JP 2001-220577, JP 2001-081090, and JP 2001-052869. Alternatively, pyran derivatives described in the above may be used.
- the electron injection layer 107 plays a role of efficiently injecting electrons moving from the cathode 108 into the light emitting layer 105 or the electron transport layer 106.
- the electron transport layer 106 plays a role of efficiently transporting electrons injected from the cathode 108 or electrons injected from the cathode 108 through the electron injection layer 107 to the light emitting layer 105.
- the electron transport layer 106 and the electron injection layer 107 are each formed by laminating and mixing one or more electron transport / injection materials or a mixture of the electron transport / injection material and the polymer binder.
- the electron injection / transport layer is a layer that is responsible for injecting electrons from the cathode and further transporting the electrons. It is desirable that the electron injection efficiency is high and the injected electrons are transported efficiently. For this purpose, it is preferable to use a substance that has a high electron affinity, a high electron mobility, excellent stability, and is unlikely to generate trapping impurities during production and use. However, considering the transport balance between holes and electrons, if the role of effectively preventing the holes from the anode from flowing to the cathode side without recombination is mainly played, the electron transport capability is much higher. Even if it is not high, the effect of improving the luminous efficiency is equivalent to that of a material having a high electron transport capability. Therefore, the electron injection / transport layer in this embodiment may include a function of a layer that can efficiently block the movement of holes.
- a material (electron transport material) for forming the electron transport layer 106 or the electron injection layer 107 a polycyclic aromatic compound represented by the above general formula (1) can be used.
- it can be arbitrarily selected from compounds conventionally used as electron transport compounds in photoconductive materials and known compounds used in electron injection layers and electron transport layers of organic electroluminescent devices. .
- Materials used for the electron transport layer or the electron injection layer include compounds composed of aromatic rings or heteroaromatic rings composed of one or more atoms selected from carbon, hydrogen, oxygen, sulfur, silicon, and phosphorus, and pyrrole derivatives. And at least one selected from the condensed ring derivatives thereof and metal complexes having electron-accepting nitrogen.
- condensed ring aromatic ring derivatives such as naphthalene and anthracene, styryl aromatic ring derivatives represented by 4,4′-bis (diphenylethenyl) biphenyl, perinone derivatives, coumarin derivatives, naphthalimide derivatives, anthraquinones And quinone derivatives such as diphenoquinone, phosphorus oxide derivatives, carbazole derivatives, and indole derivatives.
- metal complexes having electron-accepting nitrogen include hydroxyazole complexes such as hydroxyphenyloxazole complexes, azomethine complexes, tropolone metal complexes, flavonol metal complexes, and benzoquinoline metal complexes. These materials can be used alone or in combination with different materials.
- electron transfer compounds include pyridine derivatives, naphthalene derivatives, anthracene derivatives, phenanthroline derivatives, perinone derivatives, coumarin derivatives, naphthalimide derivatives, anthraquinone derivatives, diphenoquinone derivatives, diphenylquinone derivatives, perylene derivatives, oxadiazoles.
- metal complexes having electron-accepting nitrogen can also be used, such as hydroxyazole complexes such as quinolinol-based metal complexes and hydroxyphenyloxazole complexes, azomethine complexes, tropolone metal complexes, flavonol metal complexes, and benzoquinoline metal complexes. can give.
- the above-mentioned materials can be used alone, but they may be mixed with different materials.
- quinolinol metal complexes Among the materials described above, quinolinol metal complexes, bipyridine derivatives, phenanthroline derivatives or borane derivatives are preferred.
- the quinolinol-based metal complex is a compound represented by the following general formula (E-1).
- R 1 to R 6 are hydrogen or a substituent
- M is Li, Al, Ga, Be or Zn
- n is an integer of 1 to 3.
- quinolinol metal complexes include 8-quinolinol lithium, tris (8-quinolinolato) aluminum, tris (4-methyl-8-quinolinolato) aluminum, tris (5-methyl-8-quinolinolato) aluminum, tris (3 , 4-dimethyl-8-quinolinolato) aluminum, tris (4,5-dimethyl-8-quinolinolato) aluminum, tris (4,6-dimethyl-8-quinolinolato) aluminum, bis (2-methyl-8-quinolinolato) ( Phenolate) aluminum, bis (2-methyl-8-quinolinolato) (2-methylphenolate) aluminum, bis (2-methyl-8-quinolinolato) (3-methylphenolato) aluminum, bis (2-methyl-8- Quinolinolato) (4- Tylphenolate) aluminum, bis (2-methyl-8-quinolinolato) (2-phenylphenolate) aluminum, bis (2-methyl-8-quinolinolato) (3-phenylphenolate)
- the bipyridine derivative is a compound represented by the following general formula (E-2).
- G represents a simple bond or an n-valent linking group, and n is an integer of 2 to 8. Further, carbon not used for bonding of pyridine-pyridine or pyridine-G may be substituted.
- G in the general formula (E-2) examples include the following structural formulas.
- each R is independently hydrogen, methyl, ethyl, isopropyl, cyclohexyl, phenyl, 1-naphthyl, 2-naphthyl, biphenylyl or terphenylyl.
- pyridine derivative examples include 2,5-bis (2,2′-pyridin-6-yl) -1,1-dimethyl-3,4-diphenylsilole, 2,5-bis (2,2′- Pyridin-6-yl) -1,1-dimethyl-3,4-dimesitylsilole, 2,5-bis (2,2′-pyridin-5-yl) -1,1-dimethyl-3,4 Diphenylsilole, 2,5-bis (2,2′-pyridin-5-yl) -1,1-dimethyl-3,4-dimesitylsilole, 9,10-di (2,2′-pyridine-6) -Yl) anthracene, 9,10-di (2,2′-pyridin-5-yl) anthracene, 9,10-di (2,3′-pyridin-6-yl) anthracene, 9,10-di (2 , 3′-Pyridin-5-yl)
- the phenanthroline derivative is a compound represented by the following general formula (E-3-1) or (E-3-2).
- R 1 to R 8 are hydrogen or a substituent, adjacent groups may be bonded to each other to form a condensed ring, G represents a simple bond or an n-valent linking group, and n represents 2 It is an integer of ⁇ 8.
- Examples of G in the general formula (E-3-2) include the same ones as described in the bipyridine derivative column.
- phenanthroline derivatives include 4,7-diphenyl-1,10-phenanthroline, 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline, 9,10-di (1,10-phenanthroline- 2-yl) anthracene, 2,6-di (1,10-phenanthroline-5-yl) pyridine, 1,3,5-tri (1,10-phenanthroline-5-yl) benzene, 9,9′-difluor -Bis (1,10-phenanthroline-5-yl), bathocuproin, 1,3-bis (2-phenyl-1,10-phenanthroline-9-yl) benzene and the like.
- a phenanthroline derivative is used for the electron transport layer and the electron injection layer.
- the substituent itself has a three-dimensional structure, or a phenanthroline skeleton or Those having a three-dimensional structure by steric repulsion with an adjacent substituent or those having a plurality of phenanthroline skeletons linked to each other are preferred.
- a compound containing a conjugated bond, a substituted or unsubstituted aromatic hydrocarbon, or a substituted or unsubstituted aromatic heterocycle in the linking unit is more preferable.
- the borane derivative is a compound represented by the following general formula (E-4), and is disclosed in detail in JP-A-2007-27587.
- each of R 11 and R 12 independently represents at least one of hydrogen, alkyl, optionally substituted aryl, substituted silyl, optionally substituted nitrogen-containing heterocycle, or cyano.
- R 13 to R 16 are each independently an optionally substituted alkyl or an optionally substituted aryl
- X is an optionally substituted arylene
- Y is Optionally substituted aryl having 16 or less carbon atoms, substituted boryl, or optionally substituted carbazolyl
- n is each independently an integer of 0 to 3.
- each of R 11 and R 12 independently represents at least one of hydrogen, alkyl, optionally substituted aryl, substituted silyl, optionally substituted nitrogen-containing heterocycle, or cyano.
- R 13 to R 16 are each independently an optionally substituted alkyl or an optionally substituted aryl
- R 21 and R 22 are each independently hydrogen, alkyl, At least one of optionally substituted aryl, substituted silyl, optionally substituted nitrogen-containing heterocyclic ring, or cyano
- X 1 is optionally substituted arylene having 20 or less carbon atoms.
- N is each independently an integer from 0 to 3
- m is each independently an integer from 0 to 4.
- R 31 to R 34 are each independently methyl, isopropyl or phenyl
- R 35 and R 36 are each independently hydrogen, methyl, isopropyl or phenyl. It is.
- each of R 11 and R 12 independently represents at least one of hydrogen, alkyl, optionally substituted aryl, substituted silyl, optionally substituted nitrogen-containing heterocycle, or cyano.
- Each of R 13 to R 16 independently represents an optionally substituted alkyl or an optionally substituted aryl, and X 1 represents an optionally substituted arylene having 20 or less carbon atoms.
- n is each independently an integer of 0 to 3.
- R 31 to R 34 are each independently any of methyl, isopropyl or phenyl
- R 35 and R 36 are each independently any of hydrogen, methyl, isopropyl or phenyl It is.
- each of R 11 and R 12 independently represents at least one of hydrogen, alkyl, optionally substituted aryl, substituted silyl, optionally substituted nitrogen-containing heterocycle, or cyano.
- Each of R 13 to R 16 independently represents an optionally substituted alkyl or an optionally substituted aryl, and X 1 represents an optionally substituted arylene having 10 or less carbon atoms.
- Y 1 is optionally substituted aryl having 14 or less carbon atoms, and n is each independently an integer of 0 to 3.
- R 31 to R 34 are each independently methyl, isopropyl or phenyl
- R 35 and R 36 are each independently hydrogen, methyl, isopropyl or phenyl. It is.
- the benzimidazole derivative is a compound represented by the following general formula (E-5).
- Ar 1 to Ar 3 are each independently hydrogen or aryl having 6 to 30 carbon atoms which may be substituted.
- a benzimidazole derivative which is anthryl optionally substituted with Ar 1 is preferable.
- aryl having 6 to 30 carbon atoms include phenyl, 1-naphthyl, 2-naphthyl, acenaphthylene-1-yl, acenaphthylene-3-yl, acenaphthylene-4-yl, acenaphthylene-5-yl, and fluorene-1- Yl, fluoren-2-yl, fluoren-3-yl, fluoren-4-yl, fluoren-9-yl, phenalen-1-yl, phenalen-2-yl, 1-phenanthryl, 2-phenanthryl, 3-phenanthryl, 4-phenanthryl, 9-phenanthryl, 1-anthryl, 2-anthryl, 9-anthryl, fluoranthen-1-yl, fluoranthen-2-yl, fluoranthen-3-yl, fluoranthen-7-yl, fluoranthen-8-yl, Triphenylene-1-yl, 2-
- benzimidazole derivative examples include 1-phenyl-2- (4- (10-phenylanthracen-9-yl) phenyl) -1H-benzo [d] imidazole, 2- (4- (10- (naphthalene-2) -Yl) anthracen-9-yl) phenyl) -1-phenyl-1H-benzo [d] imidazole, 2- (3- (10- (naphthalen-2-yl) anthracen-9-yl) phenyl) -1- Phenyl-1H-benzo [d] imidazole, 5- (10- (naphthalen-2-yl) anthracen-9-yl) -1,2-diphenyl-1H-benzo [d] imidazole, 1- (4- (10 -(Naphthalen-2-yl) anthracen-9-yl) phenyl) -2-phenyl-1H-benzo [d] imidazole, 2- (4- (9,10-di (n)-
- the electron transport layer or the electron injection layer may further contain a substance capable of reducing the material forming the electron transport layer or the electron injection layer.
- a substance capable of reducing the material forming the electron transport layer or the electron injection layer various substances can be used as long as they have a certain reducing ability.
- Preferred reducing substances include alkali metals such as Na (work function 2.36 eV), K (2.28 eV), Rb (2.16 eV) or Cs (1.95 eV), and Ca (2. 9eV), Sr (2.0 to 2.5 eV) or Ba (2.52 eV) and the like, and those having a work function of 2.9 eV or less are particularly preferable.
- a more preferable reducing substance is an alkali metal of K, Rb or Cs, more preferably Rb or Cs, and most preferably Cs.
- alkali metals have particularly high reducing ability, and by adding a relatively small amount to the material forming the electron transport layer or the electron injection layer, the luminance of the organic EL element can be improved and the lifetime can be extended.
- a reducing substance having a work function of 2.9 eV or less a combination of two or more alkali metals is also preferable.
- a combination containing Cs such as Cs and Na, Cs and K, Cs and Rb, or A combination of Cs, Na and K is preferred.
- Cs such as Cs and Na, Cs and K, Cs and Rb, or A combination of Cs, Na and K is preferred.
- the cathode 108 serves to inject electrons into the light emitting layer 105 through the electron injection layer 107 and the electron transport layer 106.
- the material for forming the cathode 108 is not particularly limited as long as it is a substance that can efficiently inject electrons into the organic layer, but the same material as that for forming the anode 102 can be used.
- metals such as tin, indium, calcium, aluminum, silver, copper, nickel, chromium, gold, platinum, iron, zinc, lithium, sodium, potassium, cesium and magnesium or alloys thereof (magnesium-silver alloy, magnesium -Indium alloys, aluminum-lithium alloys such as lithium fluoride / aluminum, etc.) are preferred.
- Lithium, sodium, potassium, cesium, calcium, magnesium, or alloys containing these low work function metals are effective for increasing the electron injection efficiency and improving device characteristics.
- metals such as platinum, gold, silver, copper, iron, tin, aluminum and indium, or alloys using these metals, and inorganic materials such as silica, titania and silicon nitride, polyvinyl alcohol, vinyl chloride Lamination of hydrocarbon polymer compounds and the like is a preferred example.
- the manufacturing method of these electrodes is not particularly limited as long as conduction can be achieved, such as resistance heating evaporation, electron beam evaporation, sputtering, ion plating, and coating.
- the materials used for the hole injection layer, hole transport layer, light emitting layer, electron transport layer and electron injection layer can form each layer alone, but as a polymer binder, polyvinyl chloride, polycarbonate, Polystyrene, poly (N-vinylcarbazole), polymethyl methacrylate, polybutyl methacrylate, polyester, polysulfone, polyphenylene oxide, polybutadiene, hydrocarbon resin, ketone resin, phenoxy resin, polyamide, ethyl cellulose, vinyl acetate resin, ABS resin, polyurethane resin It can also be used by dispersing it in solvent-soluble resins such as phenol resins, xylene resins, petroleum resins, urea resins, melamine resins, unsaturated polyester resins, alkyd resins, epoxy resins, silicone resins, etc. is there.
- solvent-soluble resins such as phenol resins, xylene resins, petroleum resins, urea resins, melamine resins,
- Each layer constituting the organic electroluminescent element is formed by a method such as vapor deposition, resistance heating vapor deposition, electron beam vapor deposition, sputtering, molecular lamination method, printing method, spin coating method or cast method, coating method, etc. It can be formed by using a thin film.
- the film thickness of each layer thus formed is not particularly limited and can be appropriately set according to the properties of the material, but is usually in the range of 2 nm to 5000 nm. The film thickness can usually be measured with a crystal oscillation type film thickness measuring device or the like.
- the vapor deposition conditions vary depending on the type of material, the target crystal structure and association structure of the film, and the like.
- Deposition conditions generally include boat heating temperature +50 to + 400 ° C., vacuum degree 10 ⁇ 6 to 10 ⁇ 3 Pa, deposition rate 0.01 to 50 nm / second, substrate temperature ⁇ 150 to + 300 ° C., film thickness 2 nm to 5 ⁇ m. It is preferable to set appropriately within the range.
- an organic electric field composed of an anode / hole injection layer / hole transport layer / a light emitting layer composed of a host material and a dopant material / electron transport layer / electron injection layer / cathode.
- a method for manufacturing a light-emitting element will be described.
- a thin film of an anode material is formed on a suitable substrate by vapor deposition or the like to produce an anode, and then a thin film of a hole injection layer and a hole transport layer is formed on the anode.
- a host material and a dopant material are co-evaporated to form a thin film to form a light emitting layer.
- An electron transport layer and an electron injection layer are formed on the light emitting layer, and a thin film made of a cathode material is formed by vapor deposition. By forming it as a cathode, a desired organic electroluminescent element can be obtained.
- the order of preparation may be reversed, and the cathode, electron injection layer, electron transport layer, light emitting layer, hole transport layer, hole injection layer, and anode may be fabricated in this order. Is possible.
- the anode When a DC voltage is applied to the organic electroluminescent device thus obtained, the anode may be applied with a positive polarity and the cathode with a negative polarity. When a voltage of about 2 to 40 V is applied, the organic electroluminescent device is transparent or translucent. Luminescence can be observed from the electrode side (anode or cathode, and both). The organic electroluminescence device emits light when a pulse current or an alternating current is applied. The alternating current waveform to be applied may be arbitrary.
- the present invention can also be applied to a display device provided with an organic electroluminescent element or a lighting device provided with an organic electroluminescent element.
- a display device or an illuminating device including an organic electroluminescent element can be manufactured by a known method such as connecting the organic electroluminescent element according to the present embodiment and a known driving device, such as direct current driving, pulse driving, or alternating current. It can be driven by appropriately using a known driving method such as driving.
- Examples of the display device include a panel display such as a color flat panel display, and a flexible display such as a flexible color organic electroluminescence (EL) display (for example, JP-A-10-335066 and JP-A-2003-321546). Gazette, JP-A-2004-281086, etc.).
- Examples of the display method of the display include a matrix and / or segment method. Note that the matrix display and the segment display may coexist in the same panel.
- a matrix is a pixel in which pixels for display are arranged two-dimensionally, such as a grid or mosaic, and displays characters and images as a set of pixels.
- the shape and size of the pixel are determined by the application. For example, a square pixel with a side of 300 ⁇ m or less is usually used for displaying images and characters on a personal computer, monitor, TV, and a pixel with a side of mm order for a large display such as a display panel. become.
- monochrome display pixels of the same color may be arranged. However, in color display, red, green, and blue pixels are displayed side by side. In this case, there are typically a delta type and a stripe type.
- the matrix driving method may be either a line sequential driving method or an active matrix.
- the line-sequential driving has an advantage that the structure is simple. However, the active matrix may be superior in consideration of the operation characteristics, so that it is necessary to properly use it depending on the application.
- a pattern is formed so as to display predetermined information, and a predetermined region is caused to emit light.
- a predetermined region is caused to emit light.
- the time and temperature display in a digital clock or a thermometer the operation state display of an audio device or an electromagnetic cooker, the panel display of an automobile, and the like can be mentioned.
- the illuminating device examples include an illuminating device such as indoor lighting, a backlight of a liquid crystal display device, and the like (for example, JP 2003-257621 A, JP 2003-277741 A, JP 2004-119211 A).
- the backlight is used mainly for the purpose of improving the visibility of a display device that does not emit light, and is used for a liquid crystal display device, a clock, an audio device, an automobile panel, a display panel, a sign, and the like.
- a backlight for liquid crystal display devices especially personal computers for which thinning is an issue, considering that conventional methods are made of fluorescent lamps and light guide plates, it is difficult to reduce the thickness.
- the backlight using the light emitting element according to the embodiment is thin and lightweight.
- polycyclic aromatic compound according to the present invention can be used for production of an organic field effect transistor or an organic thin film solar cell in addition to the organic electroluminescent element described above.
- An organic field effect transistor is a transistor that controls current by an electric field generated by voltage input, and includes a gate electrode in addition to a source electrode and a drain electrode. When a voltage is applied to the gate electrode, an electric field is generated, and the current can be controlled by arbitrarily blocking the flow of electrons (or holes) flowing between the source electrode and the drain electrode.
- Field effect transistors are easier to miniaturize than simple transistors (bipolar transistors), and are often used as elements constituting integrated circuits and the like.
- the structure of the organic field effect transistor is usually provided with a source electrode and a drain electrode in contact with the organic semiconductor active layer formed using the polycyclic aromatic compound according to the present invention, and further in contact with the organic semiconductor active layer.
- the gate electrode may be provided with the insulating layer (dielectric layer) interposed therebetween. Examples of the element structure include the following structures.
- Substrate / gate electrode / insulator layer / source electrode / drain electrode / organic semiconductor active layer (2) Substrate / gate electrode / insulator layer / organic semiconductor active layer / source electrode / drain electrode (3) substrate / organic Semiconductor active layer / source electrode / drain electrode / insulator layer / gate electrode (4) substrate / source electrode / drain electrode / organic semiconductor active layer / insulator layer / gate electrode It can be applied as a pixel drive switching element of an active matrix drive type liquid crystal display or an organic electroluminescence display.
- Organic thin-film solar cells have a structure in which an anode such as ITO, a hole transport layer, a photoelectric conversion layer, an electron transport layer, and a cathode are laminated on a transparent substrate such as glass.
- the photoelectric conversion layer has a p-type semiconductor layer on the anode side and an n-type semiconductor layer on the cathode side.
- the polycyclic aromatic compound according to the present invention can be used as a material for a hole transport layer, a p-type semiconductor layer, an n-type semiconductor layer, and an electron transport layer, depending on its physical properties.
- the polycyclic aromatic compound according to the present invention can function as a hole transport material or an electron transport material in an organic thin film solar cell.
- the organic thin film solar cell may appropriately include a hole block layer, an electron block layer, an electron injection layer, a hole injection layer, a smoothing layer, and the like.
- known materials used for the organic thin film solar cell can be appropriately selected and used in combination.
- Boron tribromide (1.00 mL, 11 mmol) and tert-butylbenzene (4.0 mL) were added at 0 ° C., and the mixture was stirred at room temperature for 1 hour, and then 1,2,2,6,6-pentamethylpiperidine (1. 80 mL, 9.9 mmol) was added. After heating at 160 ° C.
- mesityl Grignard reagent (12.5 mL, 1.20 M, 15 mmol) was added at room temperature and stirred at room temperature for 2 hours. After the solvent was concentrated under reduced pressure, a phosphate buffer solution (pH 6, 25 mL) was added, extraction was performed with toluene, and then the solvent was distilled off under reduced pressure. The obtained crude product was isolated and purified by GPC (eluent: toluene) to obtain a yellow solid compound of the formula (1-3-2) (0.79 g, yield 22%).
- reaction solution was cooled to room temperature and passed through a silica gel short pass column (eluent: toluene). After the solvent was distilled off under reduced pressure, the crude product was washed with hexane to give 6,13-bis (4-n-butylphenyl) -6,13-dihydrodibenzo [b, i] phenazine as a yellow powder. (7.37 g, 84% yield) was obtained.
- reaction solution was cooled to room temperature and passed through a silica gel short pass column (eluent: toluene). After the solvent was distilled off under reduced pressure, the crude product was washed with hexane to give 6,13-bis (4-n-butylphenyl) -6,13-dihydrodibenzo [b, i] phenazine as a yellow powder. (7.37 g, 84% yield) was obtained.
- reaction solution was added to a dichloromethane solution (2.0 mL) of 1,4-diazabicyclo [2,2,2] octane (0.131 g, 1.2 mmol) at room temperature, followed by celite filtration. (Eluent: toluene). After distilling off the solvent under reduced pressure, the obtained crude product was isolated and purified by GPC (eluent: toluene). As a result, the compound of formula (1-8-1) (10.8 mg, yield 16) was obtained as a white solid. %).
- Tris (2-bromo-4-methylphenyl) amine (1.57 g, 3.0 mmol) and toluene (40 mL) were charged with butyllithium (5.78 mL, 1.6 M, 9.3 mmol) at 0 ° C. under a nitrogen atmosphere. The mixture was further stirred at room temperature for 18 hours. Bisdiethylaminochlorophosphine (1.45 mL, 6.9 mmol) was added at 0 ° C., and the mixture was stirred at room temperature for 1 hour and then heated and stirred at 50 ° C. for 3 hours.
- reaction solution was added to a dichloromethane solution (2.0 mL) of 1,4-diazabicyclo [2,2,2] octane (0.281 g, 2.5 mmol) at room temperature, followed by celite filtration. (Eluent: toluene). After distilling off the solvent under reduced pressure, the obtained crude product was isolated and purified by GPC (eluent: toluene). As a result, the compound of formula (1-7-1) (14.1 mg, yield 9) was obtained as a white solid. %).
- the evaluation target compound When evaluating the absorption characteristics and light emission characteristics (fluorescence and phosphorescence) of a sample evaluation target compound, the evaluation target compound may be dissolved in a solvent and evaluated in a solvent or in a thin film state. Furthermore, when evaluating in a thin film state, depending on the mode of use of the compound to be evaluated in the organic EL device, only the compound to be evaluated is thinned and the compound to be evaluated is dispersed in an appropriate matrix material. In some cases, the film thickness may be evaluated. As the matrix material, commercially available PMMA (polymethyl methacrylate) or the like can be used.
- the thin film sample dispersed in PMMA is prepared by, for example, dissolving PMMA and a compound to be evaluated in toluene and then forming a thin film on a quartz transparent support substrate (10 mm ⁇ 10 mm) by spin coating. Can do.
- a method for manufacturing a thin film sample when the matrix material is a host material is described below.
- a quartz transparent support substrate (10 mm x 10 mm x 1.0 mm) is fixed to a substrate holder of a commercially available vapor deposition apparatus (made by Showa Vacuum Co., Ltd.), a molybdenum vapor deposition boat containing a host material, and a dopant material Equipped with a molybdenum evaporation boat.
- the vacuum chamber is depressurized to 5 ⁇ 10 ⁇ 4 Pa, and the vapor deposition boat containing the host material and the vapor deposition boat containing the dopant material are heated at the same time so as to have an appropriate film thickness.
- a mixed thin film of material and dopant material is formed.
- the deposition rate is controlled according to the set weight ratio of the host material and the dopant material.
- the absorption spectrum of the sample was measured using an ultraviolet-visible-near-infrared spectrophotometer (Shimadzu Corporation, UV-2600).
- the fluorescence spectrum or phosphorescence spectrum of the sample was measured using a spectrofluorometer (manufactured by Hitachi High-Tech Co., Ltd., F-7000).
- photoluminescence was measured by excitation at an appropriate excitation wavelength at room temperature.
- the sample was immersed in liquid nitrogen (temperature 77K) using the attached cooling unit.
- an optical chopper was used to adjust the delay time from the excitation light irradiation to the start of measurement. Samples were excited at the appropriate excitation wavelength and photoluminescence was measured.
- Fluorescence lifetime is measured at 300 K using a fluorescence lifetime measuring apparatus (C11367-01, manufactured by Hamamatsu Photonics Co., Ltd.). Observe the fast and slow fluorescence lifetime components at the maximum emission wavelength measured at the appropriate excitation wavelength.
- a fluorescence lifetime measurement of a general organic EL material that emits fluorescence at room temperature a slow component involving a triplet component derived from phosphorescence is hardly observed due to the deactivation of a triplet component due to heat. .
- a slow component is observed in the compound to be evaluated, this indicates that triplet energy having a long excitation lifetime is transferred to singlet energy by thermal activation and observed as delayed fluorescence.
- the compounds of the present invention are characterized by a suitable band gap (Eg), high triplet excitation energy (E T ) and small ⁇ EST (energy difference between triplet excited state (T1) and singlet excited state (S1)). Therefore, application to the light emitting layer and the charge transport layer can be expected.
- Eg band gap
- E T high triplet excitation energy
- S1 singlet excited state
- Structure of organic EL element As a structure of the organic EL element using the compound of this invention, there exist the following structures A and B, for example.
- HI hole injection layer material
- HT hole transport layer material
- EB electron blocking layer material
- E electron blocking layer material
- E-H light emitting layer host material
- HI hole injection layer material
- N 4 ′ -diphenyl-N 4 N 4 ′ -bis (9-phenyl-9H-carbazol-3-yl)-[1,1 '-Biphenyl] -4,4'-diamine
- HAT-CN hole injection layer material
- -1 "(hole transport layer material) is N-([1,1'-biphenyl] -4-yl) -9,9-dimethyl-N- (4- (9-phenyl-9H-carbazole-3- Yl) phenyl) -9H-fluoren-2-amine
- HT-2 hole transport layer material
- a glass substrate manufactured by Optoscience Co., Ltd.
- 26 mm ⁇ 28 mm ⁇ 0.7 mm obtained by polishing ITO deposited to a thickness of 100 nm by sputtering to 50 nm was used as a transparent support substrate.
- This transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition apparatus (manufactured by Showa Vacuum Co., Ltd.), and a molybdenum vapor deposition boat, HT (hole transport layer material) containing HI (hole injection layer material).
- EB electron blocking layer material
- EM-H host material
- molybdenum with ferric diopant material
- a vapor deposition boat, a molybdenum vapor deposition boat containing ET (electron transport layer material), a molybdenum vapor deposition boat containing LiF (electron injection layer material), and a tungsten vapor deposition boat containing aluminum were mounted.
- the following layers were sequentially formed on the ITO film of the transparent support substrate.
- the vacuum chamber was depressurized to 5 ⁇ 10 ⁇ 4 Pa, and first, a vapor deposition boat containing HI was heated and vapor-deposited to a film thickness of 40 nm to form a hole injection layer. Next, the vapor deposition boat containing HT was heated and vapor-deposited to a film thickness of 15 nm to form a hole transport layer. Next, the evaporation boat containing EB was heated and evaporated to a film thickness of 15 nm to form an electron blocking layer.
- a vapor deposition boat containing EM-H and a vapor deposition boat containing Firpic (dopant material) were heated at the same time to form a light emitting layer by vapor deposition to a film thickness of 30 nm.
- the deposition rate was adjusted so that the weight ratio of EM-H to Firpic was approximately 95 to 5.
- the evaporation boat containing ET was heated and evaporated to a film thickness of 40 nm to form an electron transport layer.
- the deposition rate of each layer was 0.01 to 1 nm / second.
- the deposition boat containing LiF is heated to deposit at a deposition rate of 0.01 to 0.1 nm / second so that the film thickness becomes 1 nm, and then the deposition boat containing aluminum is heated to form a film thickness.
- a cathode was formed by vapor deposition to a thickness of 100 nm to obtain an organic EL device.
- the deposition rate of aluminum was adjusted to be 1 nm to 10 nm / second.
- the element configuration B can be produced by optimizing the conditions in the same manner as the element configuration A.
- Evaluation items and evaluation methods include drive voltage (V), emission wavelength (nm), CIE chromaticity (x, y), external quantum efficiency (%), maximum wavelength (nm) of emission spectrum, and half width ( nm).
- V drive voltage
- nm emission wavelength
- CIE chromaticity x, y
- % external quantum efficiency
- nm maximum wavelength of emission spectrum
- half width nm
- the quantum efficiency of the light-emitting device has an internal quantum efficiency and an external quantum efficiency, but the ratio of external energy injected as electrons (or holes) into the light-emitting layer of the light-emitting device is converted into pure photons. What is internal quantum efficiency.
- the external quantum efficiency is calculated based on the amount of photons emitted to the outside of the light emitting element, and some of the photons generated in the light emitting layer are absorbed inside the light emitting element. The external quantum efficiency is lower than the internal quantum efficiency because it is continuously reflected and is not emitted outside the light emitting element.
- the measurement method of spectral radiance (emission spectrum) and external quantum efficiency is as follows. Using a voltage / current generator R6144 manufactured by Advantest Corporation, a voltage at which the luminance of the element became 10 cd / m 2 was applied to cause the element to emit light. Using a spectral radiance meter SR-3AR manufactured by TOPCON, the spectral radiance in the visible light region was measured from the direction perpendicular to the light emitting surface. Assuming that the light emitting surface is a completely diffusing surface, the value obtained by dividing the measured spectral radiance value of each wavelength component by the wavelength energy and multiplying by ⁇ is the number of photons at each wavelength.
- the value obtained by dividing the applied current value by the elementary charge is the number of carriers injected into the device, and the number obtained by dividing the total number of photons emitted from the device by the number of carriers injected into the device is the external quantum efficiency.
- the half-value width of the emission spectrum is obtained as the width between the upper and lower wavelengths where the intensity is 50% centering on the maximum emission wavelength.
- Example of Compound (1-3-2) ⁇ Evaluation of Basic Physical Properties> [Absorption characteristics]
- the compound (1-3-2) was dissolved in a solvent CH 2 Cl 2 at a concentration of 2.0 ⁇ 10 ⁇ 5 mol / l, and an absorption spectrum was measured.
- the absorption edge wavelength was 479 nm
- the absorption maximum wavelength was 457 nm
- the molar absorbance coefficient at the absorption maximum wavelength was 22000 cm ⁇ 1 M ⁇ 1 (FIG. 2).
- the energy gap calculated from the absorption edge wavelength was 2.59 eV.
- the fluorescence spectrum was measured by dissolving the compound (1-3-2) in a solvent CH 2 Cl 2 at a concentration of 2.0 ⁇ 10 ⁇ 5 mol / l at room temperature. The sample was excited at an excitation wavelength of 280 nm and measured for photoluminescence. As a result, the maximum emission wavelength was 484 nm (FIG. 2), and the fluorescence quantum yield was 79%.
- the phosphorescence spectrum was measured by dissolving the compound (1-3-2) in 3-methylpentane. The sample was excited at an excitation wavelength of 280 nm and measured for photoluminescence. As a result, the maximum emission wavelength was 509 nm (FIG. 2). When the difference ⁇ EST between the lowest singlet excitation energy and the lowest triplet excitation energy was estimated from the measured maximum emission wavelength of the fluorescence spectrum and the phosphorescence spectrum, it was 0.13 eV.
- the compound (1-3-2) is optimal as a material for the light emitting layer because it has a high fluorescence quantum yield and an appropriate energy gap. Furthermore, since it has a small ⁇ EST, it can be expected as a thermally activated delayed fluorescent material for the light emitting layer.
- NPD N, N′-di (naphthylene-1-yl) -N, N′-diphenyl- [1,1′-biphenyl] -4,4′-diamine
- TcTa Tris.
- mCP is 1,3-bis (N-carbazolyl) benzene
- mCBP is 3,3′-di (9H-carbazolyl-9-yl) -1, 1′-biphenyl
- TBi is 1,3,5-tris (1-phenyl-1H-benzo [d] imidazol-2-yl) benzene.
- the chemical structure is shown below.
- This transparent support substrate is fixed to a substrate holder of a commercially available vapor deposition apparatus (Changzhou Industrial Co., Ltd.), and tantalum vapor deposition containing NPD, TcTa, mCP, mCBP, compound (1-3-2), TPBi and LiF, respectively.
- the following layers were sequentially formed on the ITO film of the transparent support substrate.
- the vacuum chamber was depressurized to 2.0 ⁇ 10 ⁇ 4 Pa, first NPD was heated and evaporated to a film thickness of 40 nm, then TcTa was heated and evaporated to a film thickness of 15 nm, The hole injection layer and the hole transport layer composed of three layers were formed by heating and depositing mCP to a film thickness of 15 nm.
- mCBP and the compound (1-3-2) were simultaneously heated and evaporated to a thickness of 20 nm to form a light emitting layer.
- the deposition rate was adjusted so that the weight ratio of mCBP and compound (1-3-2) was approximately 95 to 5.
- TPBi was heated and evaporated to a film thickness of 40 nm to form an electron transport layer.
- the deposition rate of each layer was 0.01 to 1 nm / second.
- LiF was heated and deposited at a deposition rate of 0.01 to 0.1 nm / second so as to have a film thickness of 1 nm.
- aluminum was heated and vapor-deposited so that it might become a film thickness of 100 nm, and the cathode was formed.
- the cathode was formed by vapor deposition so that the vapor deposition rate was 0.1 nm to 2 nm / second to obtain an organic EL device.
- Example of Compound (1-6-1) ⁇ Evaluation of Basic Physical Properties> [Absorption characteristics]
- the absorption spectrum was measured under the same conditions as for the compound (1-3-2).
- the absorption edge wavelength was 480 nm
- the absorption maximum wavelength was 490 nm
- the molar absorbance coefficient at the absorption maximum wavelength was 20950 cm ⁇ 1 M ⁇ 1 (FIG. 3).
- the energy gap calculated from the absorption edge wavelength was 2.58 eV.
- compound (1-6-1) has an appropriate energy gap and can be expected as a material for organic EL devices.
- the compound (1-6-4) has an appropriate energy gap and can be expected as a material for an organic EL device.
- compound (1-6-2) has an appropriate energy gap and can be expected as a material for organic EL devices.
- the choice of materials for organic EL elements can be increased.
- a novel polycyclic aromatic compound as a material for an organic electroluminescent element, it is possible to provide an excellent organic EL element, a display device including the same, a lighting device including the same, and the like.
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Abstract
Description
A環、B環およびC環は、それぞれ独立して、アリール環またはヘテロアリール環であり、
A環、B環およびC環における少なくとも1つの水素は、置換または無置換のアリール、置換または無置換のヘテロアリール、置換または無置換のジアリールアミノ、置換または無置換のジヘテロアリールアミノ、置換または無置換のアリールヘテロアリールアミノ、置換または無置換のアルキル、置換または無置換のシクロアルキル、置換または無置換のアルコキシ、置換または無置換のアリールオキシ、置換または無置換のアリールスルホニル、置換または無置換のジアリールホスフィン、置換または無置換のジアリールホスフィンオキシド、または、置換または無置換のジアリールホスフィンスルフィドで置換されていてもよく、
A環、B環およびC環の少なくとも1つはシクロアルキルが縮合していてもよく、
X1およびX2は、それぞれ独立して、下記式(X-1)~式(X-12)のいずれかで表される2価の基であり、X1およびX2が共に式(X-2)で表される2価の基になることはなく、
B環およびC環は式(X-3)~式(X-7)のいずれかの2価の基により結合していてもよく、そして、
式(1)で表される多環芳香族化合物における少なくとも1つの水素はシアノ、ハロゲンまたは重水素で置換されていてもよい。)
A環、B環およびC環における少なくとも1つの水素は、置換または無置換のアリール、置換または無置換のヘテロアリール、置換または無置換のジアリールアミノ、置換または無置換のジヘテロアリールアミノ、置換または無置換のアリールヘテロアリールアミノ、置換または無置換のアルキル、置換または無置換のアルコキシ、または、置換または無置換のアリールオキシで置換されていてもよく、
また、A環、B環およびC環は「N」、X1およびX2から構成される上記式(1)中央の縮合2環構造と結合を共有する5員環または6員環を有し、
X1およびX2は、それぞれ独立して、上記式(X-1)~式(X-12)のいずれかで表される2価の基であり、X1およびX2が共に式(X-2)で表される2価の基になることはなく、
式(X-1)~式(X-12)において、Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、Arは炭素を介した連結基またはホウ素を介した連結基によりA環、B環および/またはC環と結合していてもよく、ただし、X1およびX2が共に式(X-1)で表される2価の基である場合はArは窒素を介した連結基によりA環、B環および/またはC環と結合することはなく、X1およびX2の少なくとも一方が式(X-6)または式(X-8)で表される2価の基である場合はX1およびX2におけるArはA環、B環および/またはC環と結合することはなく、
B環およびC環は式(X-3)~式(X-7)のいずれかの2価の基により結合していてもよく、そして、
式(1)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい、
項1に記載する多環芳香族化合物。
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1およびX2は、それぞれ独立して、上記式(X-1)~式(X-12)のいずれかで表される2価の基であり、X1およびX2が共に式(X-2)で表される2価の基になることはなく、
式(X-1)~式(X-12)において、Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、Arは炭素を介した連結基またはホウ素を介した連結基によりa環、b環および/またはc環と結合していてもよく、ただし、X1およびX2が共に式(X-1)で表される2価の基である場合はArは窒素を介した連結基によりa環、b環および/またはc環と結合することはなく、X1およびX2の少なくとも一方が式(X-6)または式(X-8)で表される2価の基である場合はX1およびX2におけるArはa環、b環および/またはc環と結合することはなく、
b環およびc環は式(X-3)~式(X-7)のいずれかの2価の基により結合していてもよく、そして、
式(2)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、そして、
式(3)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
R1~R3、R5~R10およびR13~R20は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R3、R5~R10およびR13~R20のうちの隣接する基同士が結合してa環、b環、c環、d環またはe環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1およびR16が結合してa環およびd環が連結基である>C(-Rb)2で連結し、かつR3およびR17が結合してa環およびe環が連結基である>C(-Rb)2で連結していてもよく、
Rbは、それぞれ独立して、水素またはアルキルであり、そして、
式(4)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、そして、
式(5)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
R1~R10およびR13~R16は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R10およびR13~R16のうちの隣接する基同士が結合してa環、b環、c環またはd環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、そして、
式(6)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1およびX2は、それぞれ独立して、上記式(X-3)~式(X-7)のいずれかで表される2価の基であり、
式(X-3)~式(X-7)において、Arは、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、そして、
式(7)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
R1~R6およびR9~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R6およびR9~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1、X2およびX3は、それぞれ独立して、上記式(X-3)~式(X-7)のいずれかで表される2価の基であり、
式(X-3)~式(X-7)において、Arは、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、そして、
式(8)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。)
一般式(1)や(2)で表される多環芳香族化合物は、基本的には、まずA環(a環)とB環(b環)およびC環(c環)を中心の窒素原子と結合させることで中間体を製造する(第1反応)。この第1反応では、例えばブッフバルト-ハートウィッグ反応といった一般的反応が利用できる。
本発明に係る多環芳香族化合物は、例えば、有機電界発光素子の材料として用いることができる。以下に、本実施形態に係る有機EL素子について図面に基づいて詳細に説明する。図1は、本実施形態に係る有機EL素子を示す概略断面図である。
図1に示された有機電界発光素子100は、基板101と、基板101上に設けられた陽極102と、陽極102の上に設けられた正孔注入層103と、正孔注入層103の上に設けられた正孔輸送層104と、正孔輸送層104の上に設けられた発光層105と、発光層105の上に設けられた電子輸送層106と、電子輸送層106の上に設けられた電子注入層107と、電子注入層107の上に設けられた陰極108とを有する。
基板101は、有機電界発光素子100の支持体となるものであり、通常、石英、ガラス、金属、プラスチックなどが用いられる。基板101は、目的に応じて板状、フィルム状、またはシート状に形成され、例えば、ガラス板、金属板、金属箔、プラスチックフィルム、プラスチックシートなどが用いられる。なかでも、ガラス板、および、ポリエステル、ポリメタクリレート、ポリカーボネート、ポリスルホンなどの透明な合成樹脂製の板が好ましい。ガラス基板であれば、ソーダライムガラスや無アルカリガラスなどが用いられ、また、厚みも機械的強度を保つのに十分な厚みがあればよいので、例えば、0.2mm以上あればよい。厚さの上限値としては、例えば、2mm以下、好ましくは1mm以下である。ガラスの材質については、ガラスからの溶出イオンが少ない方がよいので無アルカリガラスの方が好ましいが、SiO2などのバリアコートを施したソーダライムガラスも市販されているのでこれを使用することができる。また、基板101には、ガスバリア性を高めるために、少なくとも片面に緻密なシリコン酸化膜などのガスバリア膜を設けてもよく、特にガスバリア性が低い合成樹脂製の板、フィルムまたはシートを基板101として用いる場合にはガスバリア膜を設けるのが好ましい。
陽極102は、発光層105へ正孔を注入する役割を果たすものである。なお、陽極102と発光層105との間に正孔注入層103および/または正孔輸送層104が設けられている場合には、これらを介して発光層105へ正孔を注入することになる。
正孔注入層103は、陽極102から移動してくる正孔を、効率よく発光層105内または正孔輸送層104内に注入する役割を果たすものである。正孔輸送層104は、陽極102から注入された正孔または陽極102から正孔注入層103を介して注入された正孔を、効率よく発光層105に輸送する役割を果たすものである。正孔注入層103および正孔輸送層104は、それぞれ、正孔注入・輸送材料の一種または二種以上を積層、混合するか、正孔注入・輸送材料と高分子結着剤の混合物により形成される。また、正孔注入・輸送材料に塩化鉄(III)のような無機塩を添加して層を形成してもよい。
発光層105は、電界を与えられた電極間において、陽極102から注入された正孔と、陰極108から注入された電子とを再結合させることにより発光するものである。発光層105を形成する材料としては、正孔と電子との再結合によって励起されて発光する化合物(発光性化合物)であればよく、安定な薄膜形状を形成することができ、かつ、固体状態で強い発光(蛍光)効率を示す化合物であるのが好ましい。本発明では、発光層用の材料として、上記一般式(1)で表される多環芳香族化合物を用いることができる。
また、特開2003-347056号公報、および特開2001-307884号公報などに記載されたスチルベン構造を有するアミンを用いてもよい。
また、特開平11-97178号公報、特開2000-133457号公報、特開2000-26324号公報、特開2001-267079号公報、特開2001-267078号公報、特開2001-267076号公報、特開2000-34234号公報、特開2001-267075号公報、および特開2001-217077号公報などに記載されたペリレン誘導体を用いてもよい。
また、国際公開第2000/40586号パンフレットなどに記載されたボラン誘導体を用いてもよい。
また、特開2006-156888号公報などに記載された芳香族アミン誘導体を用いてもよい。
また、特開2004-43646号公報、特開2001-76876号公報、および特開平6-298758号公報などに記載されたクマリン誘導体を用いてもよい。
電子注入層107は、陰極108から移動してくる電子を、効率よく発光層105内または電子輸送層106内に注入する役割を果たすものである。電子輸送層106は、陰極108から注入された電子または陰極108から電子注入層107を介して注入された電子を、効率よく発光層105に輸送する役割を果たすものである。電子輸送層106および電子注入層107は、それぞれ、電子輸送・注入材料の一種または二種以上を積層、混合するか、電子輸送・注入材料と高分子結着剤の混合物により形成される。
陰極108は、電子注入層107および電子輸送層106を介して、発光層105に電子を注入する役割を果たすものである。
以上の正孔注入層、正孔輸送層、発光層、電子輸送層および電子注入層に用いられる材料は単独で各層を形成することができるが、高分子結着剤としてポリ塩化ビニル、ポリカーボネート、ポリスチレン、ポリ(N-ビニルカルバゾール)、ポリメチルメタクリレート、ポリブチルメタクリレート、ポリエステル、ポリスルホン、ポリフェニレンオキサイド、ポリブタジエン、炭化水素樹脂、ケトン樹脂、フェノキシ樹脂、ポリアミド、エチルセルロース、酢酸ビニル樹脂、ABS樹脂、ポリウレタン樹脂などの溶剤可溶性樹脂や、フェノール樹脂、キシレン樹脂、石油樹脂、ユリア樹脂、メラミン樹脂、不飽和ポリエステル樹脂、アルキド樹脂、エポキシ樹脂、シリコーン樹脂などの硬化性樹脂などに分散させて用いることも可能である。
有機電界発光素子を構成する各層は、各層を構成すべき材料を蒸着法、抵抗加熱蒸着、電子ビーム蒸着、スパッタリング、分子積層法、印刷法、スピンコート法またはキャスト法、コーティング法などの方法で薄膜とすることにより、形成することができる。このようにして形成された各層の膜厚については特に限定はなく、材料の性質に応じて適宜設定することができるが、通常2nm~5000nmの範囲である。膜厚は通常、水晶発振式膜厚測定装置などで測定できる。蒸着法を用いて薄膜化する場合、その蒸着条件は、材料の種類、膜の目的とする結晶構造および会合構造などにより異なる。蒸着条件は一般的に、ボート加熱温度+50~+400℃、真空度10-6~10-3Pa、蒸着速度0.01~50nm/秒、基板温度-150~+300℃、膜厚2nm~5μmの範囲で適宜設定することが好ましい。
また、本発明は、有機電界発光素子を備えた表示装置または有機電界発光素子を備えた照明装置などにも応用することができる。
有機電界発光素子を備えた表示装置または照明装置は、本実施形態にかかる有機電界発光素子と公知の駆動装置とを接続するなど公知の方法によって製造することができ、直流駆動、パルス駆動、交流駆動など公知の駆動方法を適宜用いて駆動することができる。
本発明に係る多環芳香族化合物は、上述した有機電界発光素子の他に、有機電界効果トランジスタまたは有機薄膜太陽電池などの作製に用いることができる。
(1)基板/ゲート電極/絶縁体層/ソース電極・ドレイン電極/有機半導体活性層
(2)基板/ゲート電極/絶縁体層/有機半導体活性層/ソース電極・ドレイン電極
(3)基板/有機半導体活性層/ソース電極・ドレイン電極/絶縁体層/ゲート電極
(4)基板/ソース電極・ドレイン電極/有機半導体活性層/絶縁体層/ゲート電極
このように構成された有機電界効果トランジスタは、アクティブマトリックス駆動方式の液晶ディスプレイや有機エレクトロルミネッセンスディスプレイの画素駆動スイッチング素子等として適用できる。
1H NMR (δppm in CDCl3);δ=1.92 (s, 6H), 2.07 (s, 6H), 2.32 (s, 3H), 2.25 (s, 6H), 2.33 (s, 6H), 2.38 (s, 6H), 2.39 (s, 6H), 7.34 (dd, 2H), 7.63 (d, 2H), 7.91 (s, 2H), 8.12 (d, 2H).
HRMS(DART) calcd for C43H48B2N [(M + H)+] : 600.3987, found : 600.4000
1H NMR (δppm in CDCl3);δ=2.01 (s, 6H), 2.11 (s, 6H), 2.34 (s, 3H), 2.39 (s, 6H), 2.44 (s, 6H), 6.96 (s, 2H), 7.03 (s, 2H), 7.37 (dd, 2H), 7.62 (d, 2H), 7.93 (s, 2H), 8.15 (d, 2H).
13C NMR (δppm in CDCl3) 20.6, 20.7 (2C), 21.4 (2C), 23.2 (2C), 23.3 (2C), 122.8 (2C), 126.9 (4C), 127.1 (brs, 2C), 130.0, 131.5 (brs, 2C), 132.3 (2C), 132.4 (2C), 135.4 (2C), 136.6 (2C), 139.0 (2C), 139.1 (2C), 139.5 (brs, 2C), 144.0 (2C), 144.5 (2C), 144.8.
HRMS(DART) calcd for C39H40B2N [(M + H)+] : 544.3358, found : 544.3360
1H NMR (δppm in CDCl3); 5.98 (s, 4H), 6.50 (dd, 4H),6.60 (dd, 4H),6.71-6.89 (m, 10H).
13C NMR (δppm in CDCl3); 108.4 (4C), 123.9 (4C), 126.0 (4C), 128.4 (2C), 130.7 (2C), 130.9 (4C), 131.3 (4C), 135.5 (4C), 140.2 (4C).
1H NMR (δppm in CDCl3); 2.01 (s, 3H), 2.02 (s, 3H), 2.46 (s, 3H), 6.63 (s, 1H), 6.66 (s, 1H), 6.97 (s, 1H), 7.01-7.06 (m, 2H), 7.17-7.31 (m, 4H), 7.36 (d, 1H), 7.45 (d, 1H), 7.53-7.62 (m, 4H), 7.67 (t, 1H), 7.76-7.81 (m, 3H), 7.83 (s, 1H), 8.15 (d, 1H), 8.27 (d, 1H).
13C NMR (δppm in CDCl3); 21.4, 22.6, 22.7, 109.2, 113.5, 119.1, 119.2, 122.5, 123.9, 124.8, 124.9, 126.0, 126.1, 126.6, 126.7, 126.9, 127.4, 127.5 (2C), 130.0, 130.8 (2C), 131.0, 131.1, 131.3 (2C), 131.9 (2C), 133.2, 135.8, 136.4, 137.0, 137.4, 137.8, 139.5, 139.8, 140.4, 143.3, The NMR signal of the carbon α to the boron was not observed.
HRMS (EI) m/z [M]+ calcd for C41H31BN2 563.267, observed 563.267
3-ブチル-11-(4-ブチルフェニル)-5-メシチル-5,5a,10a,11-テトラヒドロジベンゾ[b,i]ベンゾ[5,6][1,4]アザボリノ[3,2,1-de]フェナジン
1H NMR (δppm in CDCl3); 1.03 (t, 6H), 1.49 (sext, 4H), 1.78 (quint, 4H), 2.80 (t, 4H), 5.98 (s, 4H), 6.97 (dd, 4H), 7.11 (dd, 4H), 7.36 (d, 4H), 7.51 (d, 4H).
13C NMR (δppm in CDCl3); 14.0 (2C), 22.5 (2C), 33.5 (2C), 35.5 (2C), 107.7 (4C), 123.6 (4C), 125.7 (4C), 130.0 (2C), 130.3 (4C), 131.4 (4C), 135.3 (2C), 137.2 (4C), 143.7 (4C).
1H NMR (δppm in CDCl3); 0.91 (t, 3H), 1.05 (t, 3H), 1.49 (sext, 2H), 1.53 (sext, 2H), 1.60 (quint, 2H), 1.81 (quint, 2H), 2.00 (s, 3H), 2.03 (s, 3H), 2.46 (s, 3H), 2.66 (t, 2H), 2.84 (t, 2H), 6.63 (s, 1H), 6.64 (s, 1H), 6.96 (s, 1H), 7.00 (ddd, 1H), 7.04 (s, 1H), 7.14-7.30 (m, 3H), 7.35(d, 1H), 7.41 (dd, 1H), 7.43-7.50 (m, 3H), 7.53-7.59 (m, 4H), 7.81 (s, 1H), 8.06 (d, 1H), 8.20 (d, 1H).
13C NMR (δppm in CDCl3); 3.9, 14.1, 21.4, 22.3, 22.6, 22.6, 22.7, 33.5, 33.8, 35.1, 35.6, 109.0, 113.2, 118.9, 119.2, 123.7, 124.6, 124.7, 125.8, 126.1, 126.6, 126.7, 126.9, 127.4, 127.5, 127.5, 129.1, 130.2, 130.3 (2C), 131.2 (2C), 131.8 (2C), 133.2, 134.4, 136.2, 136.8, 136.9, 137.2, 137.3, 137.7, 139.9, 140.3, 141.4, 143.9, The NMR signal of the carbon α to the boron was not observed.
HRMS (EI) m/z [M]+ calcd for C49H47BN2 674.3841, observed 674.3840
1H NMR (δppm in CDCl3); 5.98 (s, 4H), 6.50 (dd 4H), 6.60 (dd, 4H), 6.71-6.89 (m, 10H).
13C NMR (δppm in CDCl3); 108.4 (4C), 123.9 (4C), 126.0 (4C), 128.4 (2C), 130.7 (2C), 130.9 (4C), 131.3 (4C), 135.5 (4C), 140.2 (4C).
1H NMR (δppm in CDCl3); 1.99 (s, 6H), 2.16 (s, 6H), 2.49 (s, 6H), 7.00 (s, 2H), 7.10 (s, 2H), 7.27-7.31(m, 4H), 7.38 (t, 2H), 7.60 (ddd, 2H), 7.68 (d, 2H), 7.86 (dd, 2H), 8.15 (s, 2H), 8.17 (d, 2H), 8.28 (d, 2H).
13C NMR (δppm in CDCl3); 21.4 (2C), 22.7 (2C), 22.8 (2C), 118.8 (2C), 122.7 (2C), 124.3 (2C), 125.0 (2C), 126.9 (2C), 127.3 (2C), 127.6 (4C), 127.8 (2C), 129.5 (2C), 131.8 (2C), 132.3 (2C), 135.5 (2C), 136.6 (2C), 136.7 (2C), 137.5 (2C), 137.8 (2C), 143.1 (2C), 144.0 (2C), The NMR signal of the carbon α to the boron was not observed.
HRMS (MALDI-TOF/MS) m/z [M]+ calcd for C50H40B2N2690.337, observed 690.338
3,14-ジブチル-5,16-ジメシチル-5H,6H-ジベンゾ[b,i]ベンゾ[5,6][1,4]アザボリノ[3,2,1-de]ベンゾ[5,6][1,4]アザボリノ[3,2,1-kl]フェナジン
1H NMR (δppm in CDCl3); 1.03 (t, 6H), 1.49 (sext, 4H), 1.78 (quint, 4H), 2.80 (t, 4H), 5.98 (s, 4H), 6.97 (dd, 4H), 7.11 (dd, 4H), 7.36 (d, 4H), 7.51 (d, 4H).
13C NMR (δppm in CDCl3); 14.0 (2C), 22.5 (2C), 33.5 (2C), 35.5 (2C), 107.7 (4C), 123.6 (4C), 125.7 (4C), 130.0 (2C), 130.3 (4C), 131.4 (4C), 135.3 (2C), 137.2 (4C), 143.7 (4C).
1H NMR (δppm in CDCl3); 0.92 (t, 6H), 1.36 (sext, 4H), 1.61 (quint, 4H), 1.97 (s, 6H), 2.17 (s, 6H), 2.50 (s, 6H), 2.67 (t, 4H), 7.00 (s, 2H), 7.10 (s, 2H), 7.25 (ddd, 2H), 7.36 (ddd, 2H), 7.43 (s, 2H), 7.64 (d, 2H), 7.67 (d, 2H), 8.09 (d, 2H), 8.12 (s, 2H), 8.20 (d, 2H).
13C NMR (δppm in CDCl3); 14.1 (2C), 21.6 (2C), 22.4 (2C), 22.7 (2C), 22.9 (2C), 33.9 (2C), 35.2 (2C), 118.9 (2C), 124.0 (2C), 124.9 (2C), 127.1 (2C), 127.2 (2C), 127.7 (2C), 127.8 (2C), 129.6 (2C), 131.4 (2C), 132.6 (2C), 132.7 (2C), 135.3 (2C), 135.6 (2C), 136.6 (2C), 137.2 (2C), 137.9 (2C), 141.6 (2C), 143.8 (2C), 143.9 (2C), The NMR signal of the carbon α to the boron was not observed.
HRMS (EI) m/z [M]+ calcd for C58H58B2N2 802.4645, observed 802.4648
3,14-ジメチル-5,16-ジメシチル-5H,6H-ジベンゾ[b,i]ベンゾ[5,6][1,4]アザボリノ[3,2,1-de]ベンゾ[5,6][1,4]アザボリノ[3,2,1-kl]フェナジン
1H NMR (δppm in CDCl3); 2.56 (s, 6H), 5.99 (s, 4H), 6.97 (dd, 4H), 7.12 (dd, 4H), 7.35 (d, 4H), 7.53 (d, 4H).
13C NMR (δppm in CDCl3); 21.5 (2C), 107.7 (4C), 123.7 (4C), 125.6 (4C), 130.0 (2C), 130.4 (4C), 132.2 (4C), 132.8 (4C), 135.4 (2C), 138.6 (4C).
1H NMR (δppm in CDCl3); 1.97 (s, 6H), 2.17 (s, 6H), 2.42 (s, 6H), 2.50 (s, 6H), 7.00 (s, 2H),7.09 (s, 2H), 7.25 (ddd, 2H), 7.36 (t, 2H), 7.43 (dd, 2H), 7.63 (s, 2H), 7.66 (d, 2H), 8.09 (d, 2H), 8.11 (s, 2H), 8.21 (d, 2H).
13C NMR (δppm in CDCl3); 21.3 (2C), 21.6 (2C), 22.8 (2C), 22.9 (2C), 118.9 (2C), 124.1 (2C), 125.0 (2C), 127.0 (2C), 127.2 (2C), 127.7 (2C), 127.7 (2C), 127.8 (2C), 129.6 (2C), 132.2 (2C), 132.6 (2C), 133.4 (2C), 135.6 (2C), 135.7 (2C), 136.6 (2C), 137.6 (2C), 137.9 (2C), 141.2 (2C), 144.0 (2C), The NMR signal of the carbon α to the boron was not observed.
HRMS (MALDI-TOF/MS) m/z [M]+ calcd for C52H44B2N2718.369, observed 718.370
4,8,12-トリス(ジエチルアミノ)-2,6,10-トリメチル-8,12-ジヒドロ-4H-3a2-アザ-4,8,12-トリホスファジベンゾ[cd,mn]ピレン-4,8,12-トリスルフィド
1H NMR (δppm in CDCl3);δ=0.78 (t, 6H), 0.86 (t, 12H), 2.53 (s, 9H), 2.86-2.98 (m, 12H), 8.12 (d, 2H), 8.19 (d, 2H), 8.28 (d, 2H).
13C NMR (δppm in CDCl3) 14.1 (6C), 20.2, 20.3 (2C), 39.3 (3C), 39.4 (3C), 118.6 (2C), 128.7 (2C), 130.9 (2C), 134.7, 135.1 (2C), 135.6 (4C), 136.3 (2C), 138.9, 139.6 (2C).
HRMS(DART) calcd for C33H46N4P3S3 [(M + H)+] : 687.2097, found : 687.2073
1H NMR (δppm in CDCl3);δ=0.71 (t, 12H), 2.44 (s, 6H), 2.53 (s, 3H), 2.77-2.82 (m, 8H), 7.14 (t, 2H), 7.20 (d, 2H), 8.12 (d, 2H), 8.29 (d, 2H).
HRMS(DART) calcd for C29H38N3P2S2 [(M + H)+] : 554.1982, found : 554.1982
4,8,12-トリス(ジエチルアミノ)-2,6,10-トリメチル-8,12-ジヒドロ-4H-3a2-アザ-4,8,12-トリホスファジベンゾ[cd,mn]ピレン-4,8,12-トリオキサイド
1H NMR (δppm in CDCl3);δ=0.78 (t, 6H), 0.89 (t, 12H), 2.51 (s, 3H), 2.52 (s, 6H), 2.72-2.81 (m, 4H), 2.85-2.93 (m, 8H), 8.05-8.11 (m, 4H), 8.12 (dd, 2H).
13C NMR (δppm in CDCl3) 14.0 (2C), 14.1 (4C), 20.0, 20.1 (2C), 38.2, 38.3, 38.4 (4C), 118.4 (dd, 2C), 119.3 (dd, 2C), 119.5 (dd, 2C), 134.2 (t, 3C), 134.7 (2C), 134.8 (2C), 135.0 (2C), 142.0, 142.5 (2C).
5-(ジエチルアミノ)-3,7,11-トリメチル-9-(ペンタン-3-イル)ベンゾ[5,6][1,4]アザホスフィノ[3,2,1-de]フェノホスファジニン-5,9-ジオキサイドの合成
1H NMR (δppm in CD2Cl2);δ=0.71 (t, 12H), 2.32 (s, 6H), 2.39 (s, 3H), 2.74-2.82 (m, 8H), 7.09 (dd, 2H), 7.14 (dd, 2H), 7.73 (d, 2H), 7.87 (d, 2H).
13C NMR (δppm in CD2Cl2) 14.7 (4C), 20.7 (1C), 20.8 (2C), 38.9 (4C), 121.2 (dd, 2C), 122.1 (t, 1C), 123.0 (d, 2C), 130.6 (2C), 132.9 (2C), 133.7 (t, 2C), 134.0 (2C), 134.6 (t, 2C), 142.7 (t, 1C), 143.3 (2C).
サンプルの準備
評価対象の化合物の吸収特性と発光特性(蛍光と燐光)を評価する場合、評価対象の化合物を溶媒に溶解して溶媒中で評価する場合と薄膜状態で評価する場合がある。さらに、薄膜状態で評価する場合は、評価対象の化合物の有機EL素子における使用の態様に応じて、評価対象の化合物のみを薄膜化し評価する場合と評価対象の化合物を適切なマトリックス材料中に分散して薄膜化して評価する場合がある。マトリックス材料としては、市販のPMMA(ポリメチルメタクリレート)等を用いることができる。PMMAに分散した薄膜サンプルは、例えば、PMMAと評価対象の化合物をトルエン中で溶解させた後、スピンコーティング法により石英製の透明支持基板(10mm×10mm)上に薄膜を形成して作製することができる。また、マトリックス材料がホスト材料である場合の薄膜サンプルの作製方法を以下に記す。石英製の透明支持基板(10mm×10mm×1.0mm)を市販の蒸着装置(昭和真空(株)製)の基板ホルダーに固定し、ホスト材料を入れたモリブデン製蒸着用ボート、ドーパント材料を入れたモリブデン製蒸着用ボートを装着する。次に、真空槽を5×10-4Paまで減圧し、ホスト材料が入った蒸着用ボートとドーパント材料が入った蒸着用ボートを同時に加熱して適切な膜厚になるように蒸着してホスト材料とドーパント材料の混合薄膜を形成する。ホスト材料とドーパント材料の設定重量比に応じて蒸着速度を制御する。
前記サンプルの吸収スペクトルの測定は、紫外可視近赤外分光光度計((株)島津製作所、UV-2600)を用いて行った。また、前記サンプルの蛍光スペクトルまたは燐光スペクトルの測定は、分光蛍光光度計(日立ハイテク(株)製、F-7000)を用いて行った。蛍光スペクトルの測定に対しては、室温で適切な励起波長で励起しフォトルミネッセンスを測定した。燐光スペクトルの測定に対しては、付属の冷却ユニットを使用して、前記サンプルを液体窒素に浸した状態(温度77K)で測定した。燐光スペクトルを観測するため、光学チョッパを使用して励起光照射から測定開始までの遅れ時間を調整した。サンプルは適切な励起波長で励起しフォトルミネッセンスを測定した。
蛍光寿命測定装置(浜松ホトニクス(株)製、C11367-01)を用いて300Kで蛍光寿命を測定する。適切な励起波長で測定される極大発光波長において蛍光寿命の早い成分と遅い成分を観測する。蛍光を発光する一般的な有機EL材料の室温における蛍光寿命測定では、熱による3重項成分の失活により、燐光に由来する3重項成分が関与する遅い成分が観測されることはほとんどない。評価対象の化合物において遅い成分が観測された場合は、励起寿命の長い3重項エネルギーが熱活性化により1重項エネルギーに移動して遅延蛍光として観測されたことを示すことになる。
本発明の化合物は、適切なバンドギャップ(Eg)、高い三重項励起エネルギー(ET)および小さいΔEST(三重項励起状態(T1)と一重項励起状態(S1)のエネルギー差)を特徴として有しているため、特に発光層および電荷輸送層への適用が期待できる。
本発明の化合物を用いた有機EL素子の構成として、例えば、以下の構成Aと構成Bがある。
各層のリファレンスとなる構成材料の一例を下記表1に示す。本構成における正孔輸送層材料、電子阻止層材料、発光層のホスト材料、発光層のドーパント材料または電子輸送層材料の少なくとも一つを本発明の化合物で代替することによって更なる特性改善が期待できる。なお、各層の膜厚や構成材料は本発明の化合物の基礎物性によって適宜変更することができる。
各層のリファレンスとなる構成材料の一例を下記表2に示す。本構成における正孔輸送層1の材料、正孔輸送層2の材料、発光層のホスト材料、発光層のドーパント材料または電子輸送層材料の少なくとも一つを本発明の化合物で代替することによって更なる特性改善が期待できる。なお、各層の膜厚や構成材料は本発明の化合物の基礎物性によって適宜変更することができる。
素子構成Aの作製方法を以下に記述する。スパッタリングにより100nmの厚さに製膜したITOを50nmまで研磨した、26mm×28mm×0.7mmのガラス基板((株)オプトサイエンス製)を透明支持基板とした。この透明支持基板を市販の蒸着装置(昭和真空(株)製)の基板ホルダーに固定し、HI(正孔注入層材料)を入れたモリブデン製蒸着用ボート、HT(正孔輸送層材料)を入れたモリブデン製蒸着用ボート、EB(電子阻止層材料)を入れたモリブデン製蒸着用ボート、EM-H(ホスト材料)を入れたモリブデン製蒸着用ボート、Firpic(ドーパント材料)を入れたモリブデン製蒸着用ボート、ET(電子輸送層材料)を入れたモリブデン製蒸着用ボート、LiF(電子注入層材料)を入れたモリブデン製蒸着用ボート、アルミニウムを入れたタングステン製蒸着用ボートを装着した。
評価項目としては、駆動電圧(V)、発光波長(nm)、CIE色度(x,y)、外部量子効率(%)、発光スペクトルの最大波長(nm)および半値幅(nm)等がある。これらの評価項目は、例えば10cd/m2発光時の値を用いることができる。
<基礎物性の評価>
[吸収特性]
化合物(1-3-2)を2.0×10-5mol/lの濃度で溶媒CH2Cl2に溶解し吸収スペクトルの測定を行った。結果、吸収端波長は479nm、吸収極大波長は457nm、吸収極大波長におけるモル吸光度係数は22000cm-1M-1となった(図2)。また、前記吸収端波長から算出したエネルギーギャップは2.59eVであった。
蛍光スペクトルの測定は、化合物(1-3-2)を2.0×10-5mol/lの濃度で溶媒CH2Cl2に溶解し室温にて測定した。サンプルを励起波長280nmで励起しフォトルミネッセンスを測定した結果、極大発光波長は484nmであり(図2)、蛍光量子収率は79%であった。
燐光スペクトルの測定は、化合物(1-3-2)を3-メチルペンタンに溶解して実施した。サンプルを励起波長280nmで励起しフォトルミネッセンスを測定した結果、極大発光波長は509nmであった(図2)。
測定した蛍光スペクトルと燐光スペクトルの極大発光波長から、最低一重項励起エネルギーと最低三重項励起エネルギーの差ΔESTを見積もると、0.13eVであった。
前記素子構成Aまたは素子構成Bにおいて化合物(1-3-2)を発光層のドーパントとした素子を前記手順で作製し評価することができる。
スパッタリングにより製膜したITOを50nmまで研磨した、26mm×28mm×0.7mmのガラス基板((株)オプトサイエンス)を透明支持基板とした。この透明支持基板を市販の蒸着装置((株)長州産業)の基板ホルダーに固定し、NPD、TcTa、mCP、mCBP、化合物(1-3-2)、TPBiおよびLiFをそれぞれ入れたタンタル製蒸着用ルツボ、およびアルミニウムを入れた窒化アルミニウム製蒸着用ルツボを装着した。
<基礎物性の評価>
[吸収特性]
吸収スペクトルの測定は前記化合物(1-3-2)と同条件で行った。結果、吸収端波長は480nm、吸収極大波長は490nm、吸収極大波長におけるモル吸光度係数は20950cm-1M-1となった(図3)。また、前記吸収端波長から算出したエネルギーギャップは2.58eVであった。
蛍光スペクトルの測定は、励起波長340nmである以外は化合物(1-3-2)と同条件で行った。結果、極大発光波長は518nmであった(図3)。
<基礎物性の評価>
[吸収特性]
吸収スペクトルの測定は前記化合物(1-3-2)と同条件で行った。結果、吸収端波長は488nm、吸収極大波長は456nm、吸収極大波長におけるモル吸光度係数は23200cm-1M-1となった(図4)。また、前記吸収端波長から算出したエネルギーギャップは2.54eVであった。
蛍光スペクトルの測定は、化合物(1-6-1)と同条件で行った。結果、極大発光波長は529nmであった(図4)。
<基礎物性の評価>
[吸収特性]
吸収スペクトルの測定は前記化合物(1-3-2)と同条件で行った。結果、吸収端波長は487nm、吸収極大波長は457nm、吸収極大波長におけるモル吸光度係数は28050cm-1M-1となった(図5)。また、前記吸収端波長から算出したエネルギーギャップは2.55eVであった。
蛍光スペクトルの測定は、化合物(1-6-1)と同条件で行った。結果、極大発光波長は521nmであった(図5)。
101 基板
102 陽極
103 正孔注入層
104 正孔輸送層
105 発光層
106 電子輸送層
107 電子注入層
108 陰極
Claims (22)
- 下記一般式(1)で表される多環芳香族化合物。
(上記式(1)中、
A環、B環およびC環は、それぞれ独立して、アリール環またはヘテロアリール環であり、
A環、B環およびC環における少なくとも1つの水素は、置換または無置換のアリール、置換または無置換のヘテロアリール、置換または無置換のジアリールアミノ、置換または無置換のジヘテロアリールアミノ、置換または無置換のアリールヘテロアリールアミノ、置換または無置換のアルキル、置換または無置換のシクロアルキル、置換または無置換のアルコキシ、置換または無置換のアリールオキシ、置換または無置換のアリールスルホニル、置換または無置換のジアリールホスフィン、置換または無置換のジアリールホスフィンオキシド、または、置換または無置換のジアリールホスフィンスルフィドで置換されていてもよく、
A環、B環およびC環の少なくとも1つはシクロアルキルが縮合していてもよく、
X1およびX2は、それぞれ独立して、下記式(X-1)~式(X-12)のいずれかで表される2価の基であり、X1およびX2が共に式(X-2)で表される2価の基になることはなく、
式(X-1)~式(X-12)において、Arは、それぞれ独立して、置換または無置換のアリール、置換または無置換のヘテロアリール、または、置換または無置換のアルキルであり、Raは、それぞれ独立して、置換または無置換のアルキル、または、置換または無置換のシクロアルキルであり、Arは連結基によりA環、B環および/またはC環と結合していてもよく、ただし、X1およびX2が共に式(X-1)で表される2価の基である場合はArは窒素を介した連結基によりA環、B環および/またはC環と結合することはなく、X1およびX2の少なくとも一方が式(X-6)または式(X-8)で表される2価の基である場合はX1およびX2におけるArはA環、B環および/またはC環と結合することはなく、
B環およびC環は式(X-3)~式(X-7)のいずれかの2価の基により結合していてもよく、そして、
式(1)で表される多環芳香族化合物における少なくとも1つの水素はシアノ、ハロゲンまたは重水素で置換されていてもよい。) - A環、B環およびC環は、それぞれ独立して、アリール環またはヘテロアリール環であり、
A環、B環およびC環における少なくとも1つの水素は、置換または無置換のアリール、置換または無置換のヘテロアリール、置換または無置換のジアリールアミノ、置換または無置換のジヘテロアリールアミノ、置換または無置換のアリールヘテロアリールアミノ、置換または無置換のアルキル、置換または無置換のアルコキシ、または、置換または無置換のアリールオキシで置換されていてもよく、
また、A環、B環およびC環は「N」、X1およびX2から構成される上記式(1)中央の縮合2環構造と結合を共有する5員環または6員環を有し、
X1およびX2は、それぞれ独立して、上記式(X-1)~式(X-12)のいずれかで表される2価の基であり、X1およびX2が共に式(X-2)で表される2価の基になることはなく、
式(X-1)~式(X-12)において、Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、Arは炭素を介した連結基またはホウ素を介した連結基によりA環、B環および/またはC環と結合していてもよく、ただし、X1およびX2が共に式(X-1)で表される2価の基である場合はArは窒素を介した連結基によりA環、B環および/またはC環と結合することはなく、X1およびX2の少なくとも一方が式(X-6)または式(X-8)で表される2価の基である場合はX1およびX2におけるArはA環、B環および/またはC環と結合することはなく、
B環およびC環は式(X-3)~式(X-7)のいずれかの2価の基により結合していてもよく、そして、
式(1)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい、
請求項1に記載する多環芳香族化合物。 - 下記一般式(2)で表される、請求項1に記載する多環芳香族化合物。
(上記式(2)中、
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1およびX2は、それぞれ独立して、上記式(X-1)~式(X-12)のいずれかで表される2価の基であり、X1およびX2が共に式(X-2)で表される2価の基になることはなく、
式(X-1)~式(X-12)において、Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、Arは炭素を介した連結基またはホウ素を介した連結基によりa環、b環および/またはc環と結合していてもよく、ただし、X1およびX2が共に式(X-1)で表される2価の基である場合はArは窒素を介した連結基によりa環、b環および/またはc環と結合することはなく、X1およびX2の少なくとも一方が式(X-6)または式(X-8)で表される2価の基である場合はX1およびX2におけるArはa環、b環および/またはc環と結合することはなく、
b環およびc環は式(X-3)~式(X-7)のいずれかの2価の基により結合していてもよく、そして、
式(2)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 下記一般式(3)で表される、請求項3に記載する多環芳香族化合物。
(上記式(3)中、
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、そして、
式(3)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 下記一般式(4)で表される、請求項3に記載する多環芳香族化合物。
(上記式(4)中、
R1~R3、R5~R10およびR13~R20は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R3、R5~R10およびR13~R20のうちの隣接する基同士が結合してa環、b環、c環、d環またはe環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1およびR16が結合してa環およびd環が連結基である>C(-Rb)2で連結し、かつR3およびR17が結合してa環およびe環が連結基である>C(-Rb)2で連結していてもよく、
Rbは、それぞれ独立して、水素またはアルキルであり、そして、
式(4)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 下記一般式(5)で表される、請求項3に記載する多環芳香族化合物。
(上記式(5)中、
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、そして、
式(5)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 下記一般式(6)で表される、請求項3に記載する多環芳香族化合物。
(上記式(6)中、
R1~R10およびR13~R16は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R10およびR13~R16のうちの隣接する基同士が結合してa環、b環、c環またはd環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
Arは、それぞれ独立して、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、そして、
式(6)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 下記一般式(7)で表される、請求項3に記載する多環芳香族化合物。
(上記式(7)中、
R1~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1およびX2は、それぞれ独立して、上記式(X-3)~式(X-7)のいずれかで表される2価の基であり、
式(X-3)~式(X-7)において、Arは、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、そして、
式(7)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 下記一般式(8)で表される、請求項3に記載する多環芳香族化合物。
(上記式(8)中、
R1~R6およびR9~R11は、それぞれ独立して、水素、アリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシであり、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、また、R1~R6およびR9~R11のうちの隣接する基同士が結合してa環、b環またはc環と共にアリール環またはヘテロアリール環を形成していてもよく、形成された環における少なくとも1つの水素はアリール、ヘテロアリール、ジアリールアミノ、ジヘテロアリールアミノ、アリールヘテロアリールアミノ、アルキル、アルコキシまたはアリールオキシで置換されていてもよく、これらにおける少なくとも1つの水素はアリール、ヘテロアリールまたはアルキルで置換されていてもよく、
X1、X2およびX3は、それぞれ独立して、上記式(X-3)~式(X-7)のいずれかで表される2価の基であり、
式(X-3)~式(X-7)において、Arは、アルキルで置換されていてもよいアリール、アルキルで置換されていてもよいヘテロアリールまたはアルキルであり、Raは、それぞれ独立して、アルキルまたはシクロアルキルであり、そして、
式(8)で表される多環芳香族化合物における少なくとも1つの水素がシアノ、ハロゲンまたは重水素で置換されていてもよい。) - 請求項1~10のいずれかに記載する多環芳香族化合物を含有する、有機デバイス用材料。
- 前記有機デバイス用材料が、有機電界発光素子用材料、有機電界効果トランジスタ用材料または有機薄膜太陽電池用材料である、請求項11に記載する有機デバイス用材料。
- 発光層用材料である、請求項12に記載する有機電界発光素子用材料。
- 電子注入層用材料または電子輸送層用材料である、請求項12に記載する有機電界発光素子用材料。
- 正孔注入層用材料または正孔輸送層用材料である、請求項12に記載する有機電界発光素子用材料。
- 陽極および陰極からなる一対の電極と、該一対の電極間に配置され、請求項13に記載する発光層用材料を含有する発光層とを有する、有機電界発光素子。
- 陽極および陰極からなる一対の電極と、該一対の電極間に配置された発光層と、前記陰極および前記発光層の間に配置され、請求項14に記載する電子注入層用材料および/または電子輸送層用材料を含有する電子注入層および/または電子輸送層とを有する、有機電界発光素子。
- 陽極および陰極からなる一対の電極と、該一対の電極間に配置された発光層と、前記陽極および前記発光層の間に配置され、請求項15に記載する正孔注入層用材料および/または正孔輸送層用材料を含有する正孔注入層および/または正孔輸送層とを有する、有機電界発光素子。
- さらに、前記陰極と該発光層との間に配置される電子輸送層および/または電子注入層を有し、該電子輸送層および電子注入層の少なくとも1つは、キノリノール系金属錯体、ピリジン誘導体、フェナントロリン誘導体、ボラン誘導体およびベンゾイミダゾール誘導体からなる群から選択される少なくとも1つを含有する、請求項16~18のいずれかに記載する有機電界発光素子。
- 前記電子輸送層および/または電子注入層が、さらに、アルカリ金属、アルカリ土類金属、希土類金属、アルカリ金属の酸化物、アルカリ金属のハロゲン化物、アルカリ土類金属の酸化物、アルカリ土類金属のハロゲン化物、希土類金属の酸化物、希土類金属のハロゲン化物、アルカリ金属の有機錯体、アルカリ土類金属の有機錯体および希土類金属の有機錯体からなる群から選択される少なくとも1つを含有する、請求項19に記載の有機電界発光素子。
- 請求項16~20のいずれかに記載する有機電界発光素子を備えた表示装置。
- 請求項16~20のいずれかに記載する有機電界発光素子を備えた照明装置。
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Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019235402A1 (ja) * | 2018-06-04 | 2019-12-12 | 学校法人関西学院 | 多環芳香族化合物およびその多量体 |
| JPWO2020080528A1 (ja) * | 2018-10-18 | 2020-04-23 | ||
| CN111285889A (zh) * | 2018-12-10 | 2020-06-16 | 三星显示有限公司 | 有机电致发光器件和用于有机电致发光器件的多环化合物 |
| CN111285892A (zh) * | 2018-12-10 | 2020-06-16 | 三星显示有限公司 | 有机电致发光装置及用于有机电致发光装置的多环化合物 |
| JP2020097561A (ja) * | 2018-04-12 | 2020-06-25 | 学校法人関西学院 | シクロアルキル置換多環芳香族化合物 |
| CN111356696A (zh) * | 2018-02-23 | 2020-06-30 | 株式会社Lg化学 | 杂环化合物及包含其的有机发光器件 |
| WO2020135790A1 (zh) * | 2018-12-29 | 2020-07-02 | 江苏三月光电科技有限公司 | 一种含硼的化合物及其在有机电致发光器件上的应用 |
| WO2020135687A1 (zh) * | 2018-12-29 | 2020-07-02 | 江苏三月光电科技有限公司 | 一种含硼化合物及其制备方法和其应用 |
| CN111377957A (zh) * | 2018-12-29 | 2020-07-07 | 江苏三月光电科技有限公司 | 一种含硼的化合物及其在有机电致发光器件上的应用 |
| KR20200087906A (ko) * | 2019-01-11 | 2020-07-22 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
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| CN111606935A (zh) * | 2019-02-25 | 2020-09-01 | 三星显示有限公司 | 杂环化合物和包括该杂环化合物的有机发光器件 |
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| KR20210002265A (ko) * | 2019-06-28 | 2021-01-08 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
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| US12552816B2 (en) | 2021-05-26 | 2026-02-17 | Samsung Display Co., Ltd. | Light emitting diode |
| US12559510B2 (en) | 2019-09-24 | 2026-02-24 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3681972B1 (en) * | 2017-09-12 | 2021-07-28 | cynora GmbH | Organic molecules, in particular for use in optoelectronic devices |
| KR102383315B1 (ko) * | 2018-03-30 | 2022-04-06 | 캐논 가부시끼가이샤 | 유기발광소자, 표시장치, 촬상 장치 및 조명 장치 |
| KR102541446B1 (ko) | 2019-01-22 | 2023-06-09 | 삼성디스플레이 주식회사 | 유기 발광 소자 및 이를 포함하는 표시 장치 |
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| EP3763719A1 (en) * | 2019-07-11 | 2021-01-13 | Cynora Gmbh | Organic molecules for optoelectronic devices |
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| KR102836100B1 (ko) * | 2020-05-28 | 2025-07-21 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 유기 전계 발광 소자용 다환 화합물 |
| ES2968260T3 (es) * | 2020-12-28 | 2024-05-08 | Centre Nat Rech Scient | Nuevos derivados de pirrolopirrol cianinas y usos de los mismos |
| US12550611B2 (en) * | 2021-08-03 | 2026-02-10 | Universal Display Corporation | Organic electroluminescent materials and devices |
| KR20230065433A (ko) * | 2021-11-04 | 2023-05-12 | 삼성디스플레이 주식회사 | 축합 다환 화합물 및 이를 포함하는 발광 소자 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012234873A (ja) * | 2011-04-28 | 2012-11-29 | Konica Minolta Holdings Inc | 有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子、表示装置および照明装置 |
| JP2016181637A (ja) * | 2015-03-25 | 2016-10-13 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 有機エレクトロルミネッセンス素子用材料及びそれを用いた有機エレクトロルミネッセンス素子 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3735703B2 (ja) | 1999-12-21 | 2006-01-18 | 大阪大学長 | エレクトロルミネッセンス素子 |
| US20040131881A1 (en) | 2002-12-31 | 2004-07-08 | Eastman Kodak Company | Complex fluorene-containing compounds for use in OLED devices |
| JP2005170911A (ja) | 2003-12-15 | 2005-06-30 | Idemitsu Kosan Co Ltd | 芳香族化合物およびそれを用いた有機エレクトロルミネッセンス素子 |
| DE102010009903A1 (de) | 2010-03-02 | 2011-09-08 | Merck Patent Gmbh | Verbindungen für elektronische Vorrichtungen |
| US20140058099A1 (en) | 2011-03-03 | 2014-02-27 | Kyushu University National University Corporation | Novel compound, charge transport material, and organic device |
| EP3260458B1 (en) | 2011-03-10 | 2019-09-18 | Kyoto University | Polycyclic aromatic compound |
| KR20150033272A (ko) * | 2013-09-24 | 2015-04-01 | 최돈수 | 유기 전기 발광 소자용 발광 재료, 이를 이용한 유기 전기 발광 소자 및 유기 전기 발광 소자용 재료 |
| US10374166B2 (en) * | 2014-02-18 | 2019-08-06 | Kwansei Gakuin Educational Foundation | Polycyclic aromatic compound |
| TWI636056B (zh) | 2014-02-18 | 2018-09-21 | 學校法人關西學院 | 多環芳香族化合物及其製造方法、有機元件用材料及其應用 |
| US10680186B2 (en) * | 2015-03-09 | 2020-06-09 | Kwansei Gakuin Educational Foundation | Polycyclic aromatic compound and light emitting layer-forming composition |
| JP6696971B2 (ja) * | 2015-03-25 | 2020-05-20 | 学校法人関西学院 | 多環芳香族化合物および発光層形成用組成物 |
| WO2019102936A1 (ja) * | 2017-11-24 | 2019-05-31 | 学校法人関西学院 | 有機デバイス用材料およびそれを用いた有機電界発光素子 |
| CN112585778B (zh) * | 2018-08-23 | 2025-04-04 | 国立大学法人九州大学 | 有机发光元件、组合物及膜 |
| KR102716023B1 (ko) * | 2019-02-07 | 2024-10-11 | 가꼬우 호징 관세이 가쿠잉 | 다환 방향족 화합물 |
| US12351594B2 (en) * | 2019-04-11 | 2025-07-08 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| US12552818B2 (en) * | 2019-12-19 | 2026-02-17 | Merck Patent Gmbh | Polycyclic compounds for organic electroluminescent devices |
| US20220077398A1 (en) * | 2020-08-28 | 2022-03-10 | Kwansei Gakuin Educational Foundation | Polycyclic aromatic compound |
-
2017
- 2017-08-25 US US16/331,135 patent/US11407774B2/en active Active
- 2017-08-25 CN CN201780054119.9A patent/CN109863155B/zh active Active
- 2017-08-25 WO PCT/JP2017/030542 patent/WO2018047639A1/ja not_active Ceased
- 2017-08-25 JP JP2018538354A patent/JP7012308B2/ja active Active
- 2017-08-25 KR KR1020197009381A patent/KR102384779B1/ko active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012234873A (ja) * | 2011-04-28 | 2012-11-29 | Konica Minolta Holdings Inc | 有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子、表示装置および照明装置 |
| JP2016181637A (ja) * | 2015-03-25 | 2016-10-13 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 有機エレクトロルミネッセンス素子用材料及びそれを用いた有機エレクトロルミネッセンス素子 |
Non-Patent Citations (1)
| Title |
|---|
| NAKAJIMA, KIICHI ET AL.: "Kyudenshiteki C-H Hosoka Hanno o Katsuyo shity Gan-BN Takan", 95TH ANNUAL MEETING OF THE CHEMICAL SOCIETY OF JAPAN IN SPRING KOEN YOKOSHU IV, 2015, pages 1094 * |
Cited By (71)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111356696A (zh) * | 2018-02-23 | 2020-06-30 | 株式会社Lg化学 | 杂环化合物及包含其的有机发光器件 |
| CN111356696B (zh) * | 2018-02-23 | 2023-12-22 | 株式会社Lg化学 | 杂环化合物及包含其的有机发光器件 |
| JP2020097561A (ja) * | 2018-04-12 | 2020-06-25 | 学校法人関西学院 | シクロアルキル置換多環芳香族化合物 |
| JP2020196715A (ja) * | 2018-04-12 | 2020-12-10 | 学校法人関西学院 | シクロアルキル置換多環芳香族化合物 |
| JP2024037742A (ja) * | 2018-04-12 | 2024-03-19 | 学校法人関西学院 | シクロアルキル置換多環芳香族化合物 |
| WO2019235402A1 (ja) * | 2018-06-04 | 2019-12-12 | 学校法人関西学院 | 多環芳香族化合物およびその多量体 |
| JP7445927B2 (ja) | 2018-10-18 | 2024-03-08 | 学校法人関西学院 | 多環芳香族化合物 |
| JPWO2020080528A1 (ja) * | 2018-10-18 | 2020-04-23 | ||
| WO2020080528A1 (ja) * | 2018-10-18 | 2020-04-23 | 学校法人関西学院 | 多環芳香族化合物 |
| CN113227107A (zh) * | 2018-10-18 | 2021-08-06 | 学校法人关西学院 | 多环芳香族化合物 |
| KR20210078523A (ko) * | 2018-10-18 | 2021-06-28 | 가꼬우 호징 관세이 가쿠잉 | 다환 방향족 화합물 |
| KR102696786B1 (ko) * | 2018-10-18 | 2024-08-19 | 가꼬우 호징 관세이 가쿠잉 | 다환 방향족 화합물 |
| KR102745916B1 (ko) * | 2018-12-10 | 2024-12-26 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| CN111285889B (zh) * | 2018-12-10 | 2025-08-22 | 三星显示有限公司 | 有机电致发光器件和用于有机电致发光器件的多环化合物 |
| KR20200071192A (ko) * | 2018-12-10 | 2020-06-19 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| US11276836B2 (en) | 2018-12-10 | 2022-03-15 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| CN111285892B (zh) * | 2018-12-10 | 2025-11-14 | 三星显示有限公司 | 有机电致发光装置及用于有机电致发光装置的多环化合物 |
| US12359119B2 (en) | 2018-12-10 | 2025-07-15 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| CN111285892A (zh) * | 2018-12-10 | 2020-06-16 | 三星显示有限公司 | 有机电致发光装置及用于有机电致发光装置的多环化合物 |
| CN111285889A (zh) * | 2018-12-10 | 2020-06-16 | 三星显示有限公司 | 有机电致发光器件和用于有机电致发光器件的多环化合物 |
| CN111377957A (zh) * | 2018-12-29 | 2020-07-07 | 江苏三月光电科技有限公司 | 一种含硼的化合物及其在有机电致发光器件上的应用 |
| WO2020135687A1 (zh) * | 2018-12-29 | 2020-07-02 | 江苏三月光电科技有限公司 | 一种含硼化合物及其制备方法和其应用 |
| WO2020135790A1 (zh) * | 2018-12-29 | 2020-07-02 | 江苏三月光电科技有限公司 | 一种含硼的化合物及其在有机电致发光器件上的应用 |
| KR20200087906A (ko) * | 2019-01-11 | 2020-07-22 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| US11825733B2 (en) | 2019-01-11 | 2023-11-21 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| KR102858390B1 (ko) * | 2019-01-11 | 2025-09-15 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| JP2020111569A (ja) * | 2019-01-11 | 2020-07-27 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 有機電界発光素子及び有機電界発光素子用多環化合物 |
| JP2024170578A (ja) * | 2019-01-11 | 2024-12-10 | 三星ディスプレイ株式會社 | 有機電界発光素子及び有機電界発光素子用多環化合物 |
| JP7841040B2 (ja) | 2019-01-11 | 2026-04-06 | 三星ディスプレイ株式會社 | 有機電界発光素子及び有機電界発光素子用多環化合物 |
| US11950492B2 (en) | 2019-01-29 | 2024-04-02 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| CN113412265B (zh) * | 2019-02-07 | 2024-05-03 | 学校法人关西学院 | 多环芳香族化合物 |
| CN113412265A (zh) * | 2019-02-07 | 2021-09-17 | 学校法人关西学院 | 多环芳香族化合物 |
| KR20210125515A (ko) * | 2019-02-07 | 2021-10-18 | 가꼬우 호징 관세이 가쿠잉 | 다환 방향족 화합물 |
| US11877506B2 (en) | 2019-02-07 | 2024-01-16 | Kwansei Gakuin Educational Foundation | Polycyclic aromatic compound |
| KR102716023B1 (ko) | 2019-02-07 | 2024-10-11 | 가꼬우 호징 관세이 가쿠잉 | 다환 방향족 화합물 |
| WO2020162600A1 (ja) * | 2019-02-07 | 2020-08-13 | 学校法人関西学院 | 多環芳香族化合物 |
| CN111606935B (zh) * | 2019-02-25 | 2024-09-17 | 三星显示有限公司 | 杂环化合物和包括该杂环化合物的有机发光器件 |
| CN111606935A (zh) * | 2019-02-25 | 2020-09-01 | 三星显示有限公司 | 杂环化合物和包括该杂环化合物的有机发光器件 |
| US11502259B2 (en) | 2019-03-05 | 2022-11-15 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| US12351594B2 (en) | 2019-04-11 | 2025-07-08 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| JP2022527591A (ja) * | 2019-04-11 | 2022-06-02 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 有機エレクトロルミネッセンス素子のための材料 |
| WO2020208051A1 (en) | 2019-04-11 | 2020-10-15 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| JP7598873B2 (ja) | 2019-04-11 | 2024-12-12 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツング | 有機エレクトロルミネッセンス素子のための材料 |
| US12256633B2 (en) | 2019-06-03 | 2025-03-18 | Samsung Display Co., Ltd. | Organic electroluminescence device and fused polycyclic compound for organic electroluminescence device |
| KR20210002265A (ko) * | 2019-06-28 | 2021-01-08 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| US11605788B2 (en) | 2019-06-28 | 2023-03-14 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| JP2021010004A (ja) * | 2019-06-28 | 2021-01-28 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 有機電界発光素子及び有機電界発光素子用多環化合物 |
| KR102786579B1 (ko) | 2019-06-28 | 2025-03-27 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| JP7662306B2 (ja) | 2019-06-28 | 2025-04-15 | 三星ディスプレイ株式會社 | 有機電界発光素子及び有機電界発光素子用多環化合物 |
| JP2022542667A (ja) * | 2019-07-25 | 2022-10-06 | 三星ディスプレイ株式會社 | 緑色光を発する有機エレクトロルミネッセンス素子 |
| JP7630492B2 (ja) | 2019-07-25 | 2025-02-17 | 三星ディスプレイ株式會社 | 緑色光を発する有機エレクトロルミネッセンス素子及び緑色光を生成する方法 |
| US12559510B2 (en) | 2019-09-24 | 2026-02-24 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| WO2021089450A1 (en) | 2019-11-04 | 2021-05-14 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| US12593607B2 (en) | 2019-11-04 | 2026-03-31 | Udc Ireland Limited | Materials for organic electroluminescent devices |
| WO2021094269A1 (en) | 2019-11-12 | 2021-05-20 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| JP7604505B2 (ja) | 2020-01-28 | 2024-12-23 | 三星ディスプレイ株式會社 | 光電子デバイス用有機分子、有機分子の使用、組成物、光電子デバイス、及び光電子デバイスを製造するための方法 |
| JP2023511709A (ja) * | 2020-01-28 | 2023-03-22 | 三星ディスプレイ株式會社 | 光電子デバイス用有機分子 |
| US11839150B2 (en) | 2020-03-19 | 2023-12-05 | Samsung Display Co., Ltd. | Organic electroluminescence device and condensed cyclic compound for organic electroluminescence device |
| WO2021191058A1 (en) | 2020-03-23 | 2021-09-30 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
| KR102840148B1 (ko) | 2020-03-27 | 2025-08-01 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| KR20210121350A (ko) * | 2020-03-27 | 2021-10-08 | 삼성디스플레이 주식회사 | 유기 전계 발광 소자 및 유기 전계 발광 소자용 다환 화합물 |
| US11557734B2 (en) | 2020-03-27 | 2023-01-17 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| US12069946B2 (en) | 2020-05-28 | 2024-08-20 | Samsung Display Co., Ltd. | Organic electroluminescence device and polycyclic compound for organic electroluminescence device |
| JP7641829B2 (ja) | 2020-07-02 | 2025-03-07 | 住友化学株式会社 | 組成物、高分子化合物及び発光素子 |
| JP2022013757A (ja) * | 2020-07-02 | 2022-01-18 | 住友化学株式会社 | 組成物、高分子化合物及び発光素子 |
| WO2022230643A1 (ja) * | 2021-04-28 | 2022-11-03 | 東レ株式会社 | 多環芳香族化合物、色変換組成物、色変換シート、光源ユニット、ディスプレイおよび照明装置 |
| US12552816B2 (en) | 2021-05-26 | 2026-02-17 | Samsung Display Co., Ltd. | Light emitting diode |
| WO2023282676A1 (ko) | 2021-07-07 | 2023-01-12 | 주식회사 엘지화학 | 화합물 및 이를 포함하는 유기 발광 소자 |
| WO2023181958A1 (ja) * | 2022-03-22 | 2023-09-28 | 住友化学株式会社 | 発光素子及びその製造方法、発光性化合物及びその製造方法、組成物及びその製造方法、情報処理方法、情報処理装置、プログラム、発光性化合物の提供方法、並びにデータ生成方法 |
| JP2023140012A (ja) * | 2022-03-22 | 2023-10-04 | 住友化学株式会社 | 発光素子及びその製造方法、発光性化合物及びその製造方法、組成物及びその製造方法、情報処理方法、情報処理装置、プログラム、発光性化合物の提供方法、並びにデータ生成方法 |
| WO2024105066A1 (en) | 2022-11-17 | 2024-05-23 | Merck Patent Gmbh | Materials for organic electroluminescent devices |
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| Publication number | Publication date |
|---|---|
| KR102384779B1 (ko) | 2022-04-08 |
| US20190256538A1 (en) | 2019-08-22 |
| KR20190051003A (ko) | 2019-05-14 |
| CN109863155A (zh) | 2019-06-07 |
| JP7012308B2 (ja) | 2022-01-28 |
| CN109863155B (zh) | 2022-09-13 |
| US11407774B2 (en) | 2022-08-09 |
| JPWO2018047639A1 (ja) | 2019-06-27 |
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