WO2022050595A1 - 중합체, 이를 포함하는 코팅 조성물 및 이를 이용한 유기 발광 소자 - Google Patents
중합체, 이를 포함하는 코팅 조성물 및 이를 이용한 유기 발광 소자 Download PDFInfo
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- WO2022050595A1 WO2022050595A1 PCT/KR2021/010854 KR2021010854W WO2022050595A1 WO 2022050595 A1 WO2022050595 A1 WO 2022050595A1 KR 2021010854 W KR2021010854 W KR 2021010854W WO 2022050595 A1 WO2022050595 A1 WO 2022050595A1
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- 0 CC1IN(*c2ccc(*N)cc2)**1 Chemical compound CC1IN(*c2ccc(*N)cc2)**1 0.000 description 6
- DGOILZIAELSQPY-UHFFFAOYSA-N C=Cc(cc1)ccc1-c(cc1)cc(c2cc(N(c3ccccc3)c(cc3)ccc3-c(cc3)ccc3N(c3ccccc3)c(cc3)cc(c4cc(-c5ccc(C=C)cc5)ccc44)c3[n]4-c3ccccc3)ccc22)c1[n]2-c1ccccc1 Chemical compound C=Cc(cc1)ccc1-c(cc1)cc(c2cc(N(c3ccccc3)c(cc3)ccc3-c(cc3)ccc3N(c3ccccc3)c(cc3)cc(c4cc(-c5ccc(C=C)cc5)ccc44)c3[n]4-c3ccccc3)ccc22)c1[n]2-c1ccccc1 DGOILZIAELSQPY-UHFFFAOYSA-N 0.000 description 1
- NLTVRBFJQRJLKJ-UHFFFAOYSA-N CC(C1(C)C)c(cc2)ccc2Nc2ccc1cc2 Chemical compound CC(C1(C)C)c(cc2)ccc2Nc2ccc1cc2 NLTVRBFJQRJLKJ-UHFFFAOYSA-N 0.000 description 1
- RJLSWSZZUIJVOD-UHFFFAOYSA-N CC(C1C)c(cc2)ccc2Nc2ccc1cc2 Chemical compound CC(C1C)c(cc2)ccc2Nc2ccc1cc2 RJLSWSZZUIJVOD-UHFFFAOYSA-N 0.000 description 1
- JVLTUXDXURSSOP-UHFFFAOYSA-N CCC(C)(C1(C)CC)c(cc2)ccc2-c(cc2)ccc2Nc(cc2)ccc2-c2ccc1cc2 Chemical compound CCC(C)(C1(C)CC)c(cc2)ccc2-c(cc2)ccc2Nc(cc2)ccc2-c2ccc1cc2 JVLTUXDXURSSOP-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present specification relates to a polymer, a coating composition comprising the same, and an organic light emitting device formed using the same.
- the organic light emitting phenomenon is one example in which electric current is converted into visible light by an internal process of a specific organic molecule.
- the principle of the organic light emitting phenomenon is as follows. When the organic material layer is placed between the anode and the cathode, when a current is applied between the two electrodes, electrons and holes are respectively injected into the organic material layer from the cathode and the anode. Electrons and holes injected into the organic material layer recombine to form excitons, and the excitons fall back to the ground state and emit light.
- An organic electroluminescent device using this principle is generally a cathode and an anode, and an organic material layer positioned therebetween, such as an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like.
- a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, etc. can be divided into
- the hole injection material or the hole transport material an organic material having a p-type property, that is, an organic material that is easily oxidized and has an electrochemically stable state upon oxidation is mainly used.
- an electron injection material or an electron transport material an organic material having an n-type property, that is, an organic material that is easily reduced and has an electrochemically stable state upon reduction is mainly used.
- a material having both p-type and n-type properties that is, a material having a stable form in both oxidation and reduction states, is preferred, and a material with high luminous efficiency that converts excitons into light when they are formed desirable.
- materials for solution processes are being developed, and in particular, it is required to develop a material having excellent solubility in an organic solvent and having a suitable viscosity when dissolved in a solvent.
- Patent Document 1 Korean Patent Publication No. 10-2008-012337
- An object of the present specification is to provide a polymer, a coating composition including the same, and an organic light emitting device formed using the same.
- An exemplary embodiment of the present specification provides a polymer including a unit represented by the following formula (1).
- R 1 and R 2 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; halogen group; a substituted or unsubstituted silyl group; a substituted or unsubstituted alkyl group; a substituted or unsubstituted alkoxy group; a substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group,
- L is an arylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; or a heteroarylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group,
- L 1 To L 4 are the same as or different from each other, and each independently a substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,
- a and b are each 1 or 2, and when a and b are 2, the substituents in the two parentheses are the same as or different from each other,
- n1 and n2 are each an integer of 0 to 4, and when n1 and n2 are 2 or more, the substituents in the two or more parentheses are the same as or different from each other,
- n1 is the repeating number of the unit, and is an integer from 1 to 10,000.
- Another embodiment of the present specification provides a coating composition comprising a polymer comprising a unit represented by the above-described formula (1).
- An exemplary embodiment of the present specification includes a first electrode; a second electrode; and an organic material layer provided between the first electrode and the second electrode, wherein the organic material layer includes a polymer including a unit represented by Chemical Formula 1 described above.
- an exemplary embodiment of the present specification comprises the steps of preparing a first electrode; forming one or more organic material layers on the first electrode; and forming a second electrode on the one or more organic material layers, wherein the forming of the one or more organic material layers includes forming an organic material layer using the above-described coating composition.
- a manufacturing method is provided.
- the unit represented by Formula 1 is composed of four bonding points, so that a branched polymer form can be induced, and it is used in an organic solvent suitable for a solution process rather than a linear polymer formed using a unit having two bonding points. It has solubility and viscosity for
- the organic material layer including the polymer according to the exemplary embodiment of the present specification has excellent hole transport properties, and the organic light emitting device including the polymer has very improved efficiency and lifespan characteristics.
- FIG. 1 illustrates an example of an organic light emitting device according to an exemplary embodiment of the present specification.
- the present specification provides a polymer including a unit represented by the following formula (1).
- the polymer including the unit represented by the formula (1) may include one or more types of the unit represented by the formula (1).
- the polymer including the unit represented by the formula (1) may include two or more types of the unit represented by the formula (1).
- the polymer including the unit represented by Formula 1 may be a random copolymer or a block copolymer.
- the polymer including the unit represented by Formula 1 may be a homopolymer.
- the homopolymer means a polymer formed with only one type of monomer.
- the polymer including the unit represented by the formula (1) may include an additional unit in addition to the unit represented by the formula (1).
- unit refers to a structure in which a monomer is included in a polymer and is repeated, and refers to a structure in which the monomer is bonded to the polymer by polymerization.
- the meaning of "including a unit” means that the unit is included in the main chain in the polymer.
- the unit represented by Chemical Formula 1 has a structure in which two amines are connected through three or more linking groups and has a structure that is repeated at four bonding points, so that the unit represented by Chemical Formula 1
- the polymer including the unit represented by Formula 1 when used for the hole transport layer, hole injection layer or hole injection and transport layer of the organic light emitting device, the uniformity of the prepared hole transport layer, hole injection layer or hole injection and transport layer and Since the surface properties and the like are also excellent, the performance and lifespan characteristics of the device can be improved.
- the repetition number (m1) of the unit represented by Formula 1 may be 1 to 400, but is not limited thereto.
- the material constituting a specific organic material layer of the organic light emitting device may be analyzed through MS and NMR analysis by extracting the corresponding organic material layer from the organic light emitting device.
- substitution means that a hydrogen atom bonded to a carbon atom of a compound is replaced with another substituent, and the position to be substituted is not limited as long as the position at which the hydrogen atom is substituted, that is, a position where the substituent is substitutable, is substituted. , two or more substituents may be the same as or different from each other.
- substituted or unsubstituted refers to deuterium; halogen group; hydroxyl group; cyano group; silyl group; an alkyl group; cycloalkyl group; alkenyl group; alkoxy group; aryloxy group; -N(Rm)(Rn); aryl group; And it means that it is substituted with one or more substituents selected from the group consisting of a heteroaryl group, is substituted with a substituent to which two or more of the above exemplified substituents are connected, or does not have any substituents, and Rm and Rn are the same as or different from each other and each independently hydrogen; an alkyl group; aryl group; or a heteroaryl group.
- a substituent in which two or more substituents are connected may be a biphenyl group. That is, the biphenyl group may be an aryl group, and may be interpreted as a substituent in which two phenyl groups are connected.
- examples of the halogen group include fluorine, chlorine, bromine or iodine.
- the silyl group may be an alkylsilyl group or an arylsilyl group, and further may be a trialkylsilyl group or a triarylsilyl group.
- the number of carbon atoms of the silyl group is not particularly limited, but is preferably 1 to 30, the alkylsilyl group may have 1 to 30 carbon atoms, and the arylsilyl group may have 6 to 30 carbon atoms.
- a trimethylsilyl group a triethylsilyl group, a tert-butyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, a phenylsilyl group, and the like, but is not limited thereto.
- the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30.
- Specific examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl , isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n-heptyl, 1-methylhexyl, Cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, 1-methylhe
- the cycloalkyl group is not particularly limited, but preferably has 3 to 30 carbon atoms, specifically cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, etc., but is not limited thereto .
- the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 30.
- Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-( naphthyl-1-yl)vinyl-1-yl, 2,2-bis(diphenyl-1-yl)vinyl-1-yl, stilbenyl group, styrenyl group, and the like, but is not limited thereto.
- the alkoxy group may be a straight chain, branched chain or cyclic chain. Although carbon number of an alkoxy group is not specifically limited, It is preferable that it is C1-C30. Specifically, methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, tert-butoxy, sec-butoxy, n-pentyloxy, neopentyloxy, isopentyloxy, n -hexyloxy, 3,3-dimethylbutyloxy, 2-ethylbutyloxy, n-octyloxy, n-nonyloxy, n-decyloxy, benzyloxy, p-methylbenzyloxy, etc. may be It is not limited.
- the aryl group is not particularly limited, but may have 6 to 60 carbon atoms and may have 6 to 30 carbon atoms.
- the aryl group may include a structure in which two or more aryl groups are connected.
- the aryl group may include a biphenyl group to which two phenyl groups are connected, may include a terphenyl group to which three phenyl groups are connected, and may include a binaphthyl group to which two naphthyl groups are connected.
- the aryl group may be monocyclic or polycyclic.
- the aryl group may be a phenyl group, a biphenyl group, a terphenyl group, and the like, but is not limited thereto.
- the aryl group is a polycyclic aryl group, it may be a naphthyl group, an anthracene group, a phenanthrene group, a triphenylene group, a pyrene group, a phenalene group, a perylene group, a chrysene group, a fluorenyl group, and the like, but is not limited thereto.
- the fluorenyl group may be substituted, and adjacent groups may combine with each other to form a ring.
- the substituted fluorenyl group may be, for example, any one selected from the following compounds, but is not limited thereto.
- the "adjacent" group means a substituent substituted on an atom directly connected to the atom in which the substituent is substituted, a substituent sterically closest to the substituent, or another substituent substituted on the atom in which the substituent is substituted.
- two substituents substituted at an ortho position in a benzene ring and two substituents substituted at the same carbon in an aliphatic ring may be interpreted as "adjacent" groups.
- the heteroaryl group includes one or more atoms other than carbon and heteroatoms, and specifically, the heteroatoms may include one or more atoms selected from the group consisting of O, N, Se and S.
- the number of carbon atoms is not particularly limited, but preferably has 2 to 30 carbon atoms, and the heteroaryl group may be monocyclic or polycyclic.
- heterocyclic group examples include a thiophenyl group, a furanyl group, a pyrrolyl group, an imidazolyl group, a thiazolyl group, an oxazolyl group, an oxadiazolyl group, a pyridinyl group, a bipyridinyl group, a pyrimidinyl group, a triazinyl group, Triazolyl group, acridinyl group, pyridazinyl group, pyrazinyl group, quinolinyl group, quinazolinyl group, quinoxalinyl group, phthalazinyl group, pyridopyrimidinyl group, pyridopyrazinyl group, pyrazinopyrazinyl group group, isoquinolinyl group, indolyl group, carbazolyl group, benzoxazolyl group, benzimidazolyl group, benzothiazolyl
- the aryl group in the aryloxy group is the same as the example of the aryl group described above.
- the aryloxy group includes a phenoxy group, p-tolyloxy group, m-tolyloxy group, 3,5-dimethyl-phenoxy group, 2,4,6-trimethylphenoxy group, p-tert-butylphenoxy group, 3- Biphenyloxy group, 4-biphenyloxy group, 1-naphthyloxy group, 2-naphthyloxy group, 4-methyl-1-naphthyloxy group, 5-methyl-2-naphthyloxy group, 1-anthracenyloxy group , 2-anthracenyloxy group, 9-anthryloxy group, 1-phenanthrenyloxy group, 3-phenanthrenyloxy group, 9-phenanthrenyloxy group, and the like, but is not limited thereto.
- -N(Rm)(Rn) examples include a methylamine group, a dimethylamine group, an ethylamine group, a diethylamine group, a phenylamine group, a naphthylamine group, a biphenylamine group, and an anthracenyl group.
- the arylene group means that the aryl group has two bonding positions, that is, a divalent group.
- the description of the aryl group described above may be applied except that the arylene group is a divalent group.
- the heteroarylene group means that the heteroaryl group has two bonding positions, that is, a divalent group.
- the description of the above-mentioned heteroaryl group may be applied except that the heteroarylene group is a divalent group.
- the R 1 and R 2 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; halogen group; a substituted or unsubstituted silyl group; substituted or unsubstituted C 1 -C 30 an alkyl group; substituted or unsubstituted C 1 -C 30 of alkoxy group; substituted or unsubstituted C 6 -C 60 aryl group; Or substituted or unsubstituted C 2 -C 60 It is a heteroaryl group.
- the R 1 and R 2 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; halogen group; a substituted or unsubstituted C 1 -C 30 alkylsilyl group; substituted or unsubstituted C 1 -C 30 of an alkyl group; substituted or unsubstituted C 1 -C 30 of alkoxy group; substituted or unsubstituted C 6 -C 60 aryl group; Or substituted or unsubstituted C 2 -C 60 It is a heteroaryl group.
- the R 1 and R 2 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; halogen group; C 1 -C 20 Alkylsilyl group; of C 1 -C 20 an alkyl group; substituted or unsubstituted C 1 -C 20 alkoxy group; substituted or unsubstituted C 6 -C 30 aryl group; Or substituted or unsubstituted C 2 -C 30 It is a heteroaryl group.
- R 1 and R 2 are the same as or different from each other, and are each independently hydrogen or a C 1 -C 20 alkyl group.
- R 1 and R 2 are the same as or different from each other, and are each independently hydrogen or a methyl group.
- L is an arylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; or a heteroarylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group.
- L in Formula 1 has the above range, when the polymer including the unit represented by Formula 1 is applied to an organic light emitting device, the efficiency and lifespan of the device may be improved.
- L is a C 6 -C 60 arylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; or a C 2 -C 60 heteroarylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group.
- L is a C 6 -C 30 arylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 20 alkyl group; or a C 2 -C 30 O, S or N-containing heteroarylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 20 alkyl group.
- L is a phenylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; a benzofluorenylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; a binaphthylene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; a divalent dibenzofuran group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, deuterium and a C 1 -C 30 alkyl group; a divalent dibenzothiophene group unsubstituted or substituted with one or more substituents selected from the group consisting of hydrogen, de
- L is a phenylene group unsubstituted or substituted with a hexyl group; a benzofluorenylene group unsubstituted or substituted with a hexyl group; a binaphthylene group unsubstituted or substituted with an octyl group; Or a divalent carbazolyl group unsubstituted or substituted with a tridecane group (-C 13 H 27 ).
- L is any one selected from the following structural formula.
- G1 to G6 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Or a C 1 -C 30 alkyl group
- g1 is an integer from 0 to 4, and when g1 is 2 or more, G1 of 2 or more are the same as or different from each other,
- g5 and g6 are each an integer of 0 to 2, and when g5 and g6 are each 2, two G5 and G6 are the same as or different from each other.
- G1 to G6 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; or a C 1 -C 20 alkyl group.
- G1 to G6 are the same as or different from each other, and each independently hydrogen; or a C 1 -C 20 alkyl group.
- G1 to G6 are the same as or different from each other, and each independently hydrogen; hexyl group; octyl group; or a tridecane group.
- G1 is hydrogen; or a hexyl group.
- G2 and G3 are hexyl groups.
- G4 is a tridecane group.
- G5 is an octyl group.
- the tridecane group may be a branched chain, and specifically, it may have a -C(C 6 H 13 ) -2 structure.
- g1 is 0 to 2.
- g1 is 2.
- g5 and g6 are 1.
- L is any one selected from the following structural formula.
- Chemical Formula 1 is represented by any one of the following Chemical Formulas 1-1 to 1-4.
- R 1 , R 2 , L 1 to L 4 , a, b, n1, n2 and m1 have the same definitions as in Formula 1,
- X is O, S or NR
- R, R 3 to R 8 , Ar 1 and Ar 2 are the same as or different from each other, and are each independently hydrogen, deuterium or a C 1 -C 30 alkyl group,
- c is 1 or 2
- substituents in the two parentheses are the same as or different from each other
- n3 is an integer from 0 to 4,
- n4, n6 and n7 are each an integer from 0 to 3,
- n5 is an integer from 0 to 5
- n8 is an integer from 0 to 6
- X is O, S or NR.
- X is NR.
- the R, R 3 to R 8 , Ar 1 and Ar 2 are the same as or different from each other, and each independently represent hydrogen, deuterium, or a C 1 -C 30 alkyl group.
- the R, R 3 to R 8 , Ar 1 and Ar 2 are the same as or different from each other, and each independently hydrogen, deuterium, or a linear or branched C 1 -C 30 alkyl group .
- R is a linear or branched C 1 -C 30 alkyl group.
- R is a tridecane group.
- R is a branched tridecane group.
- R 3 To R 7 , Ar 1 And Ar 2 are the same as or different from each other, and each independently represents hydrogen, deuterium or a hexyl group.
- R 8 is an octyl group.
- L One To L 4 are the same as or different from each other, and each independently a substituted or unsubstituted C 6 -C 60 Arylene group; Or a substituted or unsubstituted C 2 -C 60 heteroarylene group.
- L 1 To L 4 are the same as or different from each other, and each independently a substituted or unsubstituted biphenylrylene group; Or a substituted or unsubstituted terphenylene group.
- L 1 To L 4 are the same as or different from each other, and each independently a biphenylrylene group substituted or unsubstituted with a C 1 -C 30 alkyl group; Or a terphenylene group unsubstituted or substituted with a C 1 -C 30 alkyl group.
- the L 1 To L 4 are the same as or different from each other, and each independently a biphenyl rylene group; Or a terphenylene group unsubstituted or substituted with a propyl group.
- the L 1 To L 4 are the same as or different from each other, and each independently a biphenyl rylene group; Or a terphenylene group unsubstituted or substituted with a propyl group.
- L 1 to L 4 are the same as or different from each other, and are each independently represented by any one of the following structural formulas.
- G 11 to G 13 are the same as or different from each other, and are each independently hydrogen, deuterium or a C 1 -C 30 alkyl group,
- g11 to g13 are each an integer of 0 to 4, and when g11 to g13 are 2 or more, structures in parentheses are the same as or different from each other.
- G 11 to G 13 are the same as or different from each other, and are each independently hydrogen or a propyl group.
- G 11 and G 12 are hydrogen.
- G 13 is hydrogen or a propyl group.
- G 13 is a propyl group.
- g11 and g12 are integers of 1 to 4, respectively.
- g13 is 2.
- a and b are 1.
- n1 and n2 are 0 or 1, respectively.
- L 1 to L 4 are the same as or different from each other, and are each independently represented by any one of the following structural formulas.
- m1 is the number of repetitions of the unit, and is an integer of 1 to 10,000.
- m1 is the number of repetitions of the unit, and is an integer of 5 to 5,000.
- m1 is the number of repetitions of the unit, and is an integer of 5 to 1,000.
- m1 is the number of repetitions of the unit, and is an integer of 10 to 300.
- the unit represented by Formula 1 is any one selected from the following structures.
- n1 is the repeating number of the unit, and is an integer from 1 to 10,000.
- the end group of the polymer may be a hydrogen or an aryl group.
- the number average molecular weight of the polymer including the unit represented by Formula 1 is 500 g/mol to 1,000,000 g/mol, more preferably 10,000 g/mol to 300,000 g/mol . In another exemplary embodiment, the number average molecular weight is 10,000 g/mol to 100,000 g/mol.
- the number average molecular weight of the polymer including the unit represented by Formula 1 is less than the above range, it is difficult to implement the performance of the device desired in the present invention, and when it exceeds the above range, the solubility of the polymer in a solvent is lowered. Therefore, it is preferable to have a molecular weight in the above range.
- the weight average molecular weight of the polymer including the unit represented by Formula 1 is 10,000 g/mol to 1,000,000 g/mol, more preferably 10,000 g/mol to 300,000 g/mol . In another exemplary embodiment, the weight average molecular weight is 20,000 g/mol to 200,000 g/mol.
- the polymer may have a molecular weight distribution of 1 to 10.
- the polymer has a molecular weight distribution of 1 to 4.
- number average molecular weight (Mn) and weight average molecular weight (Mw) refer to molecular weights converted to standard polystyrene measured using Gel Permeation Chromatograph (GPC).
- molecular weight distribution refers to a value obtained by dividing a weight average molecular weight (Mw) by a number average molecular weight (Mn), that is, a weight average molecular weight (Mw)/number average molecular weight (Mn).
- GPC gel permeation chromatography
- the analysis program used ChemStation of Agilent technologies, and the weight average molecular weight (Mw) and number average molecular weight (Mn) were obtained by comparing the elution time of the sample with the calibration curve, respectively, and the molecular weight distribution (PDI) with the ratio (Mw/Mn) ) can be calculated.
- GPC measurement conditions may be as follows.
- the viscosity of the polymer including the unit represented by Formula 1 may be 1 cP to 60 cP at room temperature. In another exemplary embodiment, it may be 1 cP to 40 cP, may be 2 cP to 20 cP, may be 2 cP to 12 cP, and may be 3 cP to 8 cP. In another exemplary embodiment, the viscosity of the polymer may be 4 cP to 6.5 cP at room temperature.
- the viscosity can be measured while maintaining 25 °C using a Brookfield viscometer CV Nest Cone & Plate Rheometer. In this case, 1 mL of a sample containing 2 wt% of the sample (solvent: toluene) may be used.
- the viscosity of the polymer When the viscosity of the polymer satisfies the above range, it may have a viscosity suitable for a solution process and thus device fabrication may be easy. On the other hand, if the viscosity of the polymer is less than the above range, it may be difficult to use in the process due to a flow problem.
- a coating composition comprising a polymer including a unit represented by Formula 1 above.
- the coating composition may further include a solvent.
- the coating composition may be in a liquid state.
- the "liquid phase” means a liquid state at room temperature and pressure.
- the solvent is, for example, a chlorine-based solvent such as chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o-dichlorobenzene; ether solvents such as tetrahydrofuran and dioxane; aromatic hydrocarbon solvents such as toluene, xylene, trimethylbenzene, and mesitylene; aliphatic hydrocarbon solvents such as cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, and n-decane; Ketone solvents, such as acetone, methyl ethyl ketone, and cyclohexanone; ester solvents such as ethyl acetate, butyl acetate, and eth
- the solvent may be used alone or as a mixture of two or more solvents.
- the viscosity of the single or mixed solvent is preferably 1 cP to 10 cP, more preferably 3 cP to 8 cP at room temperature, but is not limited thereto.
- the concentration of the coating composition is preferably 0.1 wt/v% to 20 wt/v%, more preferably 0.5 wt/v% to 5 wt/v%, but is not limited thereto .
- the present specification also provides an organic light emitting device formed using the coating composition.
- An exemplary embodiment of the present specification includes a first electrode; a second electrode; and an organic material layer provided between the first electrode and the second electrode, wherein the organic material layer includes a polymer including a unit represented by Chemical Formula 1 described above.
- the first electrode is a cathode
- the second electrode is an anode
- the first electrode is an anode
- the second electrode is a cathode
- the organic material layer including the polymer including the unit represented by Formula 1 may include an electron blocking layer; hole transport layer; hole injection layer; or a hole injection and transport layer.
- the organic material layer including the polymer including the unit represented by Formula 1 is a hole transport layer.
- the organic material layer including the polymer including the unit represented by Formula 1 may include: a hole blocking layer; electron transport layer; electron injection layer; or an electron injection and transport layer.
- the organic light emitting device includes a hole injection layer; hole transport layer; light emitting layer; electron transport layer; electron injection layer; electron blocking layer; hole blocking layer; hole injection and transport layer; And it may further include one or two or more layers selected from the group consisting of an electron injection and transport layer.
- the organic light emitting device may be a normal type organic light emitting device in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate.
- the organic light emitting device may be an inverted type organic light emitting device in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.
- the organic material layer of the organic light emitting device of the present specification may have a single-layer structure, but may have a multi-layer structure in which two or more organic material layers are stacked.
- the organic light emitting device of the present specification has a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, an electron blocking layer, a hole blocking layer, a hole injection and transport layer, an electron injection and transport layer, etc. as an organic material layer.
- the structure of the organic light emitting device is not limited thereto and may include a smaller number of organic layers.
- FIG. 1 the structure of the organic light emitting device according to an exemplary embodiment of the present specification is illustrated in FIG. 1 .
- a first electrode 201, a hole injection layer 301, a hole transport layer 401, a light emitting layer 501, an electron injection and transport layer 601, and a second electrode 701 are formed on the substrate 101.
- the structure of the sequentially stacked organic light emitting device is exemplified.
- the electron injection and transport layer means a layer that simultaneously injects and transports electrons.
- the hole injection layer 301 or the hole transport layer 401 of FIG. 1 may be formed using a coating composition including a polymer including a unit represented by Formula 1 above.
- FIG 1 illustrates an organic light emitting device, but is not limited thereto.
- the organic material layers may be formed of the same material or different materials.
- the organic light emitting device of the present specification may be manufactured using materials and methods known in the art, except that at least one layer of the organic material layer is formed using the above-described coating composition.
- the organic light emitting device of the present specification may be manufactured by sequentially stacking an anode, an organic material layer, and a cathode on a substrate.
- a PVD (physical vapor deposition) method such as sputtering or e-beam evaporation
- a metal or conductive metal oxide or an alloy thereof is deposited on the substrate to form the anode.
- an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer and an electron transport layer thereon it can be prepared by depositing a material that can be used as a cathode thereon.
- an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
- the present specification also provides a method of manufacturing an organic light emitting device formed using the coating composition.
- the coating composition refers to a coating composition including a polymer including a unit represented by Chemical Formula 1.
- Forming the organic material layer using the coating composition comprises: coating the coating composition; and heat-treating or light-treating the coated coating composition.
- Forming the organic material layer using the coating composition may include: coating the coating composition on the first electrode or on one or more organic material layers; and heat-treating or light-treating the coated coating composition.
- the organic material layer formed using the coating composition is formed using spin coating or inkjetting.
- the organic material layer formed using the coating composition is formed by a printing method.
- the printing method includes, for example, inkjet printing, nozzle printing, offset printing, transfer printing, or screen printing, but is not limited thereto.
- the coating composition according to an exemplary embodiment of the present specification is suitable for a solution process due to its structural characteristics, it can be formed by a printing method, thereby having an economical effect in terms of time and cost in manufacturing the device.
- the heat treatment time is preferably within 1 hour, more preferably within 30 minutes.
- the heat treatment atmosphere is preferably an inert gas such as argon or nitrogen.
- the step of heat-treating or light-treating the coated coating composition is a solvent from the coated coating composition. may be a step to remove
- the step of forming the organic material layer using the coating composition includes the heat treatment or light treatment step
- an organic material layer including a structure in which the coating composition is thinned may be provided. In this case, it can be prevented from being dissolved, morphologically affected, or decomposed by the solvent of the organic material layer on the surface of the organic material layer formed using the coating composition.
- organic material layer may include the polymer including the unit represented by Chemical Formula 1 alone, but may further include other monomers or other polymers.
- anode As the material for the anode (anode), a material having a large work function is generally preferred so that holes can be smoothly injected into the organic material layer.
- the anode material that may be used herein include metals such as vanadium, chromium, copper, zinc, gold, or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); ZnO:Al or SnO 2 : a combination of a metal such as Sb and an oxide; conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene](PEDOT), polypyrrole, and polyaniline, but are not limited thereto.
- the cathode (cathode) material is preferably a material having a small work function to facilitate electron injection into the organic material layer.
- the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead, or alloys thereof; and a multi-layered material such as LiF/Al or LiO 2 /Al, but is not limited thereto.
- the hole injection layer is a layer for injecting holes from the electrode, and as a hole injection material, it has the ability to transport holes, so it has a hole injection effect at the anode, an excellent hole injection effect on the light emitting layer or the light emitting material, and is produced in the light emitting layer
- a compound which prevents the exciton from moving to the electron injection layer or the electron injection material and is excellent in the ability to form a thin film is preferred. It is preferable that the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic material layer.
- HOMO highest occupied molecular orbital
- the hole injection material examples include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene-based organic material. of organic substances, anthraquinones, polyaniline and polythiophene-based conductive polymers, and the like, but are not limited thereto.
- the hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the light emitting layer.
- the hole transport material a material capable of transporting holes from the anode or the hole injection layer to the light emitting layer is suitable, and a material having high hole mobility is suitable. Specific examples include, but are not limited to, an arylamine-based organic material, a conductive polymer, and a block copolymer having a conjugated portion and a non-conjugated portion together.
- the electron blocking layer is a layer capable of improving the lifespan and efficiency of the device by preventing electrons injected from the electron injection layer from entering the hole injection layer through the light emitting layer. It may be formed in an appropriate portion between the injection layers.
- the light emitting material is a material capable of emitting light in the visible ray region by transporting and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and a material having good quantum efficiency for fluorescence or phosphorescence is preferable.
- Specific examples include 8-hydroxy-quinoline aluminum complex (Alq 3 ); carbazole-based compounds; dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compounds; compounds of the benzoxazole, benzothiazole and benzimidazole series; Poly(p-phenylenevinylene) (PPV)-based polymers; spiro compounds; polyfluorene; Or rubrene, etc., but is not limited thereto.
- the emission layer may include a host material and a dopant material.
- the host material includes a condensed aromatic ring derivative or a heterocyclic compound containing compound.
- condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, and the like
- heterocyclic-containing compounds include carbazole derivatives, dibenzofuran derivatives, ladder a furan compound, a pyrimidine derivative, and the like, but is not limited thereto.
- the dopant material examples include an aromatic amine derivative, a strylamine compound, a boron complex, a fluoranthene compound, and a metal complex.
- the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamine group, and includes pyrene, anthracene, chrysene, periflanthene, and the like, having an arylamine group.
- styrylamine compound a substituted or unsubstituted As a compound in which at least one arylvinyl group is substituted in a cyclic arylamine, a compound in which one or two or more substituents selected from the group consisting of an aryl group, a silyl group, an alkyl group, a cycloalkyl group and an arylamine group is substituted or unsubstituted can Specifically, there are styrylamine, styryldiamine, styryltriamine, styryltetraamine, and the like, but is not limited thereto.
- the metal complex include, but are not limited to, an iridium complex and a platinum complex.
- the electron transport layer is a layer that receives electrons from the electron injection layer and transports them to the light emitting layer.
- Do Specific examples include Al complex of 8-hydroxyquinoline; complexes containing Alq 3 ; organic radical compounds; or a hydroxyflavone-metal complex, but is not limited thereto.
- the electron transport layer may be used with any desired cathode material as used in accordance with the prior art.
- suitable cathode materials are conventional materials having a low work function and followed by an aluminum layer or a silver layer. Specifically, they are cesium, barium, calcium, ytterbium and samarium, followed by an aluminum layer or a silver layer in each case.
- the electron injection layer is a layer that injects electrons from the electrode, has the ability to transport electrons, has an electron injection effect from the cathode, an excellent electron injection effect with respect to the light emitting layer or the light emitting material, and hole injection of excitons generated in the light emitting layer.
- a compound which prevents migration to a layer and is excellent in the ability to form a thin film is preferable.
- fluorenone anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone, etc., derivatives thereof, metals complex compounds and nitrogen-containing 5-membered ring derivatives, but are not limited thereto.
- the metal complex compound examples include 8-hydroxyquinolinato lithium, bis(8-hydroxyquinolinato)zinc, bis(8-hydroxyquinolinato)copper, bis(8-hydroxyquinolinato)manganese, Tris(8-hydroxyquinolinato)aluminum, tris(2-methyl-8-hydroxyquinolinato)aluminum, tris(8-hydroxyquinolinato)gallium, bis(10-hydroxybenzo[h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( o-crezolato)gallium, bis(2-methyl-8-quinolinato)(1-naphtolato)aluminum, bis(2-methyl-8-quinolinato)(2-naphtolato)gallium, etc.
- the present invention is not limited thereto.
- the hole blocking layer is a layer that blocks the holes from reaching the cathode, and may be generally formed under the same conditions as the hole injection layer. Specifically, there are oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, aluminum complexes, and the like, but is not limited thereto.
- the organic light emitting device may be a top emission type, a back emission type, or a double side emission type depending on the material used.
- the organic light emitting diode according to the present specification may be included in various electronic devices.
- the electronic device may be a display panel, a touch panel, a solar module, a lighting device, etc., but is not limited thereto.
- a first solution was prepared by adding compound M1 (1 mmol) to a scintillation vial and dissolving in toluene (11 mL).
- the second solution was put into a Schlenk tube and stirred at 50° C. for 30 minutes.
- the first solution was further added to the Schlenk tube and stirred at 50° C. for 180 minutes.
- the Schlenk tube was cooled to room temperature and then poured into HCl/methanol (5 % v/v, concentrated HCl).
- the polymer was collected by vacuum filtration and dried under high vacuum.
- the polymer was dissolved in toluene (1% wt/v) and passed through a column containing basic aluminum oxide (6 g) layered on silica gel (6 g).
- the polymer/toluene filtrate was concentrated (5% wt/v toluene) and triturated with acetone. Polymer 1 was obtained in 60% yield.
- Polymer 2 was prepared in the same manner as in the preparation of Polymer 1, except that M2 and M3 were used instead of compound M1.
- Polymer 3 was prepared in the same manner as in the preparation of Polymer 1, except that M4 was used instead of compound M1.
- Polymer 4 was prepared in the same manner as in the preparation of Polymer 1, except that M5 was used instead of compound M1.
- Polymer 5 was prepared in the same manner as in the preparation of Polymer 1, except that M6 was used instead of compound M1.
- the number average molecular weight (Mn), weight average molecular weight (Mw), molecular weight distribution (PDI) values, and viscosity values of the polymers 1 to 5 prepared in Preparation Examples 1 to 4 are shown in Table 1 below.
- Mn number average molecular weight
- Mw weight average molecular weight
- PDI molecular weight distribution
- the viscosity was measured using 1 mL of a sample containing 2 wt% of a polymer (solvent: toluene) while maintaining 25 °C using a Brookfield viscometer CV Nest Cone & Plate Rheometer.
- a glass substrate on which ITO was deposited as a thin film to a thickness of 1500 ⁇ was ultrasonically cleaned for 10 minutes using an acetone solvent. Thereafter, the detergent was placed in distilled water, washed with ultrasonic waves for 10 minutes, and repeated twice with distilled water, followed by ultrasonic washing for 10 minutes. After washing with distilled water, ultrasonic washing was performed with a solvent of isopropyl alcohol for 10 minutes, followed by drying. The substrate was then transported to a glove box.
- a toluene solution containing the polymer 1 in an amount of 0.8 wt% was prepared on the hole injection layer, and then spin-coated to form a hole transport layer having a thickness of 100 nm.
- the following compound C and the following compound D were mixed in a weight ratio of 9:1 to form a light emitting layer through a solution process.
- the following compound E was vacuum-deposited on the light emitting layer to form an electron injection and transport layer having a thickness of 40 nm.
- LiF having a thickness of 0.5 nm and aluminum having a thickness of 100 nm were sequentially deposited on the electron injection and transport layer to form a cathode.
- the deposition rate of organic material was maintained at 0.4 ⁇ 1.0 ⁇ /sec
- the deposition rate of LiF of the cathode was 0.3 ⁇ /sec
- the deposition rate of aluminum was 2 ⁇ /sec
- the vacuum degree during deposition was 2 ⁇ 10 -8 ⁇ 5 ⁇ 10 -6 torr was maintained.
- An organic light emitting diode was manufactured in the same manner as in Example 1, except that the polymer shown in Table 3 was used instead of Polymer 1 as the material of the hole transport layer in Example 1.
- the organic light emitting diodes prepared in Examples 1 to 5 and Comparative Examples 1 to 2 were measured for driving voltage and external quantum efficiency values at a current density of 10 mA/cm 2 , and 95% of the initial luminance compared to the initial luminance at 1000 nits was measured. Time (lifetime) was measured. The results are shown in Table 3 below.
- Examples 1 to 5 of the present application show that the driving voltage of the device is lower than that of Comparative Examples 1 and 2 using Comparative Polymer 1 or Comparative Polymer 2 having a structure different from the polymer of the present application as the hole transport layer material, and the efficiency and lifespan are excellent. can be checked
- the substituent of the fluorene group contains O.
- the polar solvent must be selected mainly, so there is a limit compared to the polymer of the present invention in terms of the variety of solvents.
- O in the substituent of Comparative Polymer 1 has a property of making it easy to combine with moisture during the process, the process efficiency is lowered, and from this, the device using Comparative Polymer 1 shows significantly lowered voltage, efficiency, and lifespan characteristics. it was
- the L moiety of Formula 1 of the present invention has a structure in which a direct bond is formed, and a device using the same exhibited significantly reduced voltage, efficiency, and lifespan characteristics.
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Abstract
Description
| 중합체 | Mn (g/mol) | Mw (g/mol) | PDI | 점도 (cP, 상온) |
| 1 | 23,600 | 84,300 | 3.57 | 5.4 |
| 2 | 32,100 | 105,000 | 3.27 | 6.0 |
| 3 | 21,000 | 65,700 | 3.12 | 4.7 |
| 4 | 27,300 | 86,200 | 3.16 | 5.4 |
| 5 | 22,500 | 76,400 | 3.39 | 6.1 |
| 중합체 | Mn (g/mol) | Mw (g/mol) | PDI |
| 비교 중합체 1 | 23600 | 84900 | 3.6 |
| 비교 중합체 2 | 4890 | 16100 | 3.29 |
| 실험예 | 중합체 | Volt (V) | J (mA/cm2) | EQE (%) | T95 (h) |
| 실시예 1 | 1 | 4.31 | 10 | 5.67 | 167 |
| 실시예 2 | 2 | 4.42 | 10 | 5.99 | 173 |
| 실시예 3 | 3 | 4.30 | 10 | 5.63 | 171 |
| 실시예 4 | 4 | 4.40 | 10 | 5.96 | 151 |
| 실시예 5 | 5 | 4.29 | 10 | 5.58 | 125 |
| 비교예 1 | 비교 중합체 1 | 5.31 | 10 | 3.96 | 10 |
| 비교예 2 | 비교 중합체 2 | 4.75 | 10 | 0.66 | 8 |
Claims (10)
- 하기 화학식 1로 표시되는 단위를 포함하는 중합체:[화학식 1]상기 화학식 1에 있어서,R1 및 R2는 서로 같거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 아릴기; 또는 치환 또는 비치환된 헤테로아릴기이며,L은 수소, 중수소 및 C1-C30의 알킬기로 이루어진 군으로부터 선택된 1 이상의 치환기로 치환 또는 비치환된 아릴렌기; 또는 수소, 중수소 및 C1-C30의 알킬기로 이루어진 군으로부터 선택된 1 이상의 치환기로 치환 또는 비치환된 헤테로아릴렌기이며,L1 내지 L4는 서로 같거나 상이하고, 각각 독립적으로 치환 또는 비치환된 아릴렌기; 또는 치환 또는 비치환된 헤테로아릴렌기이며,a 및 b는 각각 1 또는 2이고, a 및 b가 2인 경우 2개의 괄호 내의 치환기는 서로 같거나 상이하며,n1 및 n2는 각각 0 내지 4의 정수이고, n1 및 n2가 2 이상인 경우 2 이상의 괄호 내의 치환기는 서로 같거나 상이하며,m1은 단위의 반복수로서, 1 내지 10,000의 정수이다.
- 청구항 1에 있어서, 상기 화학식 1은 하기 화학식 1-1 내지 1-4 중 어느 하나로 표시되는 것인 중합체:[화학식 1-1][화학식 1-2][화학식 1-3][화학식 1-4]상기 화학식 1-1 내지 1-4에 있어서,R1, R2, L1 내지 L4, a, b, n1, n2 및 m1의 정의는 화학식 1에서와 같고,X는 O, S 또는 NR이고,R, R3 내지 R8, Ar1 및 Ar2는 서로 같거나 상이하고, 각각 독립적으로 수소, 중수소 또는 C1-C30의 알킬기이며,c는 1 또는 2이고, c가 2인 경우 2개의 괄호 내의 치환기는 서로 같거나 상이하고,n3는 0 내지 4의 정수이고,n4, n6 및 n7는 각각 0 내지 3의 정수이며,n5는 0 내지 5의 정수이고,n8은 0 내지 6의 정수이며,n3 내지 n8이 각각 2 이상인 경우 2 이상의 괄호 내의 치환기는 서로 같거나 상이하다.
- 청구항 1에 있어서, 상기 L1 내지 L4는 서로 같거나 상이하고, 각각 독립적으로 치환 또는 비치환된 바이페닐릴렌기; 또는 치환 또는 비치환된 터페닐렌기인 것인 중합체.
- 청구항 1 내지 4 중 어느 한 항에 따른 중합체를 포함하는 코팅 조성물.
- 제1 전극;제2 전극; 및상기 제1 전극과 상기 제2 전극 사이에 구비된 유기물층을 포함하고,상기 유기물층은 청구항 1 내지 4 중 어느 한 항에 따른 중합체를 포함하는 것인 유기 발광 소자.
- 청구항 6에 있어서, 상기 중합체를 포함하는 유기물층은 전자차단층; 정공수송층; 정공주입층; 또는 정공주입 및 수송층인 유기 발광 소자.
- 청구항 6에 있어서, 상기 중합체를 포함하는 유기물층은 정공차단층; 전자수송층; 전자주입층; 또는 전자주입 및 수송층인 유기 발광 소자.
- 제1 전극을 준비하는 단계; 상기 제1 전극 상에 1층 이상의 유기물층을 형성하는 단계; 및 상기 1층 이상의 유기물층 상에 제2 전극을 형성하는 단계를 포함하고,상기 1층 이상의 유기물층을 형성하는 단계는 청구항 5의 코팅 조성물을 이용하여 유기물층을 형성하는 단계를 포함하는 것인 유기 발광 소자의 제조 방법.
- 청구항 9에 있어서, 상기 코팅 조성물을 이용하여 유기물층을 형성하는 단계는 상기 코팅 조성물을 코팅하는 단계; 및 상기 코팅된 코팅 조성물을 열처리 또는 광처리 하는 단계를 포함하는 것인 유기 발광 소자의 제조 방법.
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| US18/004,974 US20230340185A1 (en) | 2020-09-02 | 2021-08-17 | Polymer, Coating Composition Comprising Same, and Organic Light-Emitting Element Using Same |
| EP21864556.2A EP4163315B1 (en) | 2020-09-02 | 2021-08-17 | Polymer, coating composition comprising same, and organic light-emitting element using same |
| JP2022579834A JP7523849B2 (ja) | 2020-09-02 | 2021-08-17 | 重合体、これを含むコーティング組成物、およびこれを用いた有機発光素子 |
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| EP4400526A4 (en) * | 2022-06-10 | 2025-05-07 | LG Chem, Ltd. | Polymer and organic light-emitting device using same |
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Also Published As
| Publication number | Publication date |
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| CN115943173B (zh) | 2025-08-29 |
| KR20240078416A (ko) | 2024-06-03 |
| EP4163315A1 (en) | 2023-04-12 |
| EP4163315B1 (en) | 2025-04-23 |
| KR102723131B1 (ko) | 2024-10-29 |
| EP4163315A4 (en) | 2023-11-22 |
| US20230340185A1 (en) | 2023-10-26 |
| CN115943173A (zh) | 2023-04-07 |
| JP7523849B2 (ja) | 2024-07-29 |
| KR20220030165A (ko) | 2022-03-10 |
| JP2023531995A (ja) | 2023-07-26 |
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