WO2023239199A1 - 중합체 및 이를 이용한 유기 발광 소자 - Google Patents
중합체 및 이를 이용한 유기 발광 소자 Download PDFInfo
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Definitions
- This specification relates to polymers and organic light-emitting devices formed using them.
- the organic luminescence phenomenon is an example of an electric current being converted into visible light by an internal process of a specific organic molecule.
- the principle of organic luminescence phenomenon is as follows. When an organic layer is placed between an anode and a cathode and an electric current is applied between the two electrodes, electrons and holes are injected into the organic layer from the cathode and anode, respectively. The electrons and holes injected into the organic layer recombine to form excitons, and when these excitons fall back to the ground state, they emit light.
- Organic electroluminescent devices using this principle can generally be composed of an organic material layer including a cathode, an anode, and an organic material layer located between them, such as a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.
- organic materials used in organic light-emitting devices are pure organic materials or complexes of organic materials and metals. Depending on the use, they include hole injection materials, hole transport materials, light-emitting materials, electron transport materials, and electron injection materials. It can be divided into: Here, organic materials with p-type properties, that is, organic materials that are easily oxidized and have an electrochemically stable state when oxidized, are mainly used as hole injection materials or hole transport materials. Meanwhile, organic materials with n-type properties, that is, organic materials that are easily reduced and have an electrochemically stable state upon reduction, are mainly used as electron injection materials or electron transport materials. Light-emitting materials are preferably materials that have both p-type and n-type properties, that is, materials that are stable in both oxidized and reduced states, and materials with high luminous efficiency that convert excitons into light when they are formed. desirable.
- materials used in organic light-emitting devices it is desirable for materials used in organic light-emitting devices to additionally have the following properties.
- NPB N,N'-Di(1-naphthyl)-N,N'-diphenyl-(1,1'-biphenyl)-4,4'-diamine
- the transition temperature is less than 100°C, it is difficult to use in organic light-emitting devices that require high current.
- the holes or electrons injected into the organic light-emitting device must be smoothly transferred to the light-emitting layer, and at the same time, the injected holes and electrons must be prevented from escaping out of the light-emitting layer.
- materials used in organic light-emitting devices must have an appropriate band gap and HOMO (Highest Occupied Molecular Orbital) or LUMO (Lowest Unoccupied Molecular Orbital) energy level.
- PEDOT:PSS Poly(3,4-ethylenedioxythiophene) doped:poly(styrenesulfonic acid)
- the LUMO energy of the organic material used as the light-emitting layer material is Because the LUMO energy level is low compared to the LUMO level, it is difficult to manufacture high-efficiency, long-life organic light-emitting devices.
- materials used in organic light-emitting devices must have excellent chemical stability, charge mobility, and interface characteristics with electrodes or adjacent layers. In other words, materials used in organic light-emitting devices must be less susceptible to deformation by moisture or oxygen. In addition, by having appropriate hole or electron mobility, the densities of holes and electrons must be balanced in the light-emitting layer of the organic light-emitting device, thereby maximizing exciton formation. In addition, for the stability of the device, the interface with the electrode containing metal or metal oxide must be improved.
- materials used in organic light-emitting devices for solution processing must additionally have the following properties.
- the layers where the solution process is performed must be solvent and material resistant to other layers.
- a hardening group such as VNPB (N4,N4'-di(naphthalen-1-yl)-N4,N4'-bis(4-vinylphenyl)biphenyl-4,4'-diamine) is introduced and heat treatment or heat treatment is applied after solution application.
- a material that can form a self-crosslinked polymer on a substrate through UV (ultraviolet) irradiation or a polymer that is sufficiently resistant to the next process is desirable, such as HATCN (Hexaazatriphenylenehexacarbonitrile). Materials that can themselves be solvent-resistant are also desirable.
- the present specification seeks to provide a polymer and an organic light-emitting device formed using the same.
- An exemplary embodiment of the present specification includes a first unit represented by the following formula (1); A second unit represented by the following formula (2); a third unit different from the first unit and represented by the following formula (4); and a polymer comprising a terminal group represented by the following formula (3).
- Ar1 to Ar4 are the same or different from each other and are each independently a substituted or unsubstituted arylene group,
- L1 to L4 are the same or different from each other and are each independently directly bonded; Or a substituted or unsubstituted arylene group,
- R1 to R6 are the same as or different from each other, and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R11 to R16 are the same or different from each other and are each independently an alkyl group having 1 to 3 carbon atoms,
- R21 and R22 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Or a substituted or unsubstituted aryl group,
- r1 to r6 are each integers of 1 to 4, and when r1 to r6 are each 2 or more, the substituents in each parenthesis are the same or different from each other,
- l1 to l4 are each integers from 1 to 5, and when l1 to l4 are each 2 or more, the structures in each parenthesis are the same or different,
- n is an integer of 3 or 4
- Z is CRa; SiRa; N; Or a trivalent substituted or unsubstituted aryl group,
- Z is C; Si; Or a tetravalent substituted or unsubstituted aryl group,
- Ra is hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Or a substituted or unsubstituted aryl group,
- Y is a direct bond; Substituted or unsubstituted alkylene group; Or a substituted or unsubstituted arylene group,
- Y is directly bonded; Or in the case of a substituted or unsubstituted alkylene group, Z is a trivalent or tetravalent substituted or unsubstituted aryl group,
- E is hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted arylamine group; Substituted or unsubstituted siloxane group; cross-linking group; or a combination thereof,
- Another embodiment of the present specification includes a first electrode; second electrode; and at least one organic material layer provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer includes the polymer.
- the polymer according to an exemplary embodiment of the present specification includes a unit of Formula 1 substituted with three alkyl groups having 1 to 3 carbon atoms. Accordingly, the solubility of the produced polymer is improved.
- the polymer according to an exemplary embodiment of the present specification can be applied to an organic light-emitting device to improve the performance and/or stability of the device.
- FIG. 1 and 2 are diagrams illustrating the structure of an organic light-emitting device according to some embodiments of the present specification.
- Figure 3 is a diagram showing the results of a film retention rate test of a thin film formed with coating composition 1 prepared in Example 2-1.
- Figure 4 is a diagram showing the results of a film retention rate test of a thin film formed with coating composition 2 prepared in Comparative Example 2-1.
- Figure 5 is a diagram showing the results of a film retention rate experiment of a thin film formed with coating composition 3 prepared in Comparative Example 2-2.
- the present specification includes a first unit represented by the following formula (1); A second unit represented by the following formula (2); a third unit different from the first unit and represented by the following formula (4); and a polymer comprising a terminal group represented by the following formula (3).
- Ar1 to Ar4 are the same or different from each other and are each independently a substituted or unsubstituted arylene group,
- L1 to L4 are the same or different from each other and are each independently directly bonded; Or a substituted or unsubstituted arylene group,
- R1 to R6 are the same as or different from each other, and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R11 to R16 are the same or different from each other and are each independently an alkyl group having 1 to 3 carbon atoms,
- R21 and R22 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Or a substituted or unsubstituted aryl group,
- r1 to r6 are each integers of 1 to 4, and when r1 to r6 are each 2 or more, the substituents in each parenthesis are the same or different from each other,
- l1 to l4 are each integers from 1 to 5, and when l1 to l4 are each 2 or more, the structures in each parenthesis are the same or different,
- n is an integer of 3 or 4
- Z is CRa; SiRa; N; Or a trivalent substituted or unsubstituted aryl group,
- Z is C; Si; Or a tetravalent substituted or unsubstituted aryl group,
- Ra is hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Or a substituted or unsubstituted aryl group,
- Y is a direct bond; Substituted or unsubstituted alkylene group; Or a substituted or unsubstituted arylene group,
- Y is directly bonded; Or in the case of a substituted or unsubstituted alkylene group, Z is a trivalent or tetravalent substituted or unsubstituted aryl group,
- E is hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted arylamine group; Substituted or unsubstituted siloxane group; cross-linking group; or a combination thereof,
- the first unit included in the polymer includes three substituted or unsubstituted phenylene groups in the core, and is conjugated with -(L-phenyl group) substituted by an amine group. It is formed. At this time, by substituting three alkyl groups at specific positions on the phenyl group in the -(L-phenyl group), the effect of breaking conjugation is to improve charge mobility. Accordingly, the polymer includes a phenyl group substituted with three alkyl groups, and thus can exhibit low driving voltage, improved efficiency, and/or long lifespan characteristics when applied to a device.
- the "layer” is interchangeable with the “membrane” or “film” mainly used in the present technical field, and refers to a coating that covers a desired area.
- the size of the “layer” is not limited, and each “layer” may have the same or different size. In one embodiment, the size of a “layer” may be the same as the entire device, may correspond to the size of a specific functional area, or may be as small as a single sub-pixel.
- condition A or B refers to an inclusive “or” and does not refer to an exclusive “or.”
- condition A or B is satisfied by either of the following: A is true (or exists) and B is false (or does not exist), A is false (or does not exist) and B is true (or does not exist) means that both A and B are true (or exist).
- the inclusion of a specific material A in the layer B means i) one or more types of material A are included in one layer B, and ii) the layer B consists of one or more layers, and the material A is comprised of multiple layers of B. Includes everything on the first floor or higher.
- the meaning that a specific material A is included in layer C or layer D means that material A is i) included in one or more layers of one or more layers of C, or ii) included in one or more layers of one or more layers of D. , iii) It means both those included in the C layer above the first floor and the D floor above the first floor.
- mole fraction means the ratio of the number of moles of a given component to the total number of moles of all components.
- an “adjacent” group may mean a substituent substituted on an atom directly connected to the atom on which the substituent is substituted, a substituent located closest to the substituent in terms of structure, or another substituent substituted on the atom on which the substituent is substituted. You can. For example, two substituents substituted at ortho positions in a benzene ring and two substituents substituted on the same carbon in an aliphatic ring can be interpreted as “adjacent” groups.
- ring refers to a substituted or unsubstituted hydrocarbon ring; Or it means a substituted or unsubstituted heterocycle.
- substitution means that a hydrogen atom bonded to a carbon atom of a compound is changed to another substituent.
- the position to be substituted is not limited as long as it is the position where the hydrogen atom is substituted, that is, a position where the substituent can be substituted, and if two or more substituents are substituted. , two or more substituents may be the same or different from each other.
- substituted or unsubstituted refers to deuterium; halogen group; Alkyl group; Cycloalkyl group; Alkoxy group; Aryloxy group; Amine group; Aryl group; heterocyclic group; and a crosslinkable group, or is substituted with a substituent in which two or more of the above-exemplified substituents are linked, or does not have any substituents.
- a substituent group in which two or more substituents are connected may be a biphenyl group. That is, the biphenyl group may be an aryl group, or it may be interpreted as a substituent in which two phenyl groups are connected.
- halogen groups include fluorine (F), chlorine (Cl), bromine (Br), or iodine (I).
- the alkyl group may be straight chain or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 60. According to one embodiment, the carbon number of the alkyl group is 1 to 30. Specific examples of the alkyl group include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert-butyl, pentyl, hexyl, heptyl, and octyl groups.
- an alkylene group refers to an alkyl group having two bonding positions, that is, a bivalent group.
- the description of the alkyl group described above can be applied except that each of these is a divalent group.
- the number of carbon atoms in the cycloalkyl group is not particularly limited, but is preferably 3 to 60. According to one embodiment, the carbon number of the cycloalkyl group is 3 to 30. Specific examples of the cycloalkyl group include, but are not limited to, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group, and cyclooctyl group.
- the alkoxy group may be straight chain, branched chain, or ring chain.
- the number of carbon atoms of the alkoxy group is not particularly limited, but is preferably 1 to 30 carbon atoms.
- Specific examples of the alkoxy group include methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, isobutoxy group, tert-butoxy group, sec-butoxy group, n-pentyloxy group, neo Pentyloxy group, isopentyloxy group, n-hexyloxy group, 3,3-dimethylbutyloxy group, 2-ethylbutyloxy group, n-octyloxy group, n-nonyloxy group, n-decyloxy group, etc. It may be possible, but it is not limited to this.
- the amine group is -NH 2 ; Alkylamine group; Arylalkylamine group; Arylamine group; Arylheteroarylamine group; It may be selected from the group consisting of an alkylheteroarylamine group and a heteroarylamine group, but is not limited thereto.
- the number of carbon atoms of the amine group is not particularly limited, but is preferably 1 to 60.
- the number of carbon atoms of the aryl group is not particularly limited, but is preferably 6 to 60. According to one embodiment, the aryl group has 6 to 30 carbon atoms.
- the aryl group may be a monocyclic aryl group or a polycyclic aryl group. The monocyclic aryl group may be a phenyl group, a biphenyl group, a terphenyl group, etc., but is not limited thereto.
- the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthrenyl group, pyrenyl group, perylenyl group, triphenylenyl group, chrysenyl group, fluorenyl group, etc., but is not limited thereto.
- an arylene group refers to an aryl group having two bonding positions, that is, a bivalent group.
- the description of the aryl group described above can be applied, except that each of these is a divalent group.
- examples of the arylamine group include a substituted or unsubstituted monoarylamine group, a substituted or unsubstituted diarylamine group, or a substituted or unsubstituted triarylamine group.
- the aryl group in the arylamine group may be a monocyclic aryl group or a polycyclic aryl group.
- the arylamine group containing two or more aryl groups may include a monocyclic aryl group, a polycyclic aryl group, or both a monocyclic aryl group and a polycyclic aryl group.
- the aryl group in the arylamine group may be selected from the examples of aryl groups described above.
- the number of carbon atoms of the arylamine group is not particularly limited, but is preferably 6 to 60.
- the heterocyclic group is an aromatic, aliphatic, or condensed ring group of aromatic and aliphatic containing one or more non-carbon atoms or heteroatoms.
- the heteroatom may include one or more atoms selected from the group consisting of O, N, Se, and S.
- the number of carbon atoms of the heterocyclic group is not particularly limited, but may be 2 to 60.
- Examples of the heterocyclic group include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, pyridine group, bipyridine group, pyrimidine group, triazine group, triazole group, and acri group.
- a heteroaryl group is an aromatic ring group containing one or more heteroatoms.
- the number of carbon atoms of the heteroaryl group is not particularly limited, but may be 2 to 60.
- Examples of the heteroaryl group include pyridine group, pyrrole group, pyrimidine group, pyridazine group, furan group, thiophene group, benzothiophene group, benzofuran group, dibenzothiophene group, Dibenzofuran group, carbazole group, etc. are included, but are not limited thereto.
- the aryloxy group is a group represented by -OR200, and R200 is an aryl group.
- the aryl group in the aryloxy group is the same as the example of the aryl group described above.
- aryloxy groups include phenoxy group, benzyloxy, p-methylbenzyloxy, p-toryloxy group, m-toryloxy 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-naph There are tyloxy group, 1-anthryloxy group, 2-anthryloxy group, 9-anthryloxy group, 1-phenanthryloxy group, 3-phenanthryloxy group, 9-phenanthryloxy group, 9-
- the silyl group is a group represented by -SiR201R202R203, and R201, R202, and R203 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Or it is a substituted or unsubstituted aryl group.
- the silyl group includes, but is not limited to, trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, and phenylsilyl group. That is not the case.
- the siloxane group is a group represented by -Si(R204) 2 OSi(R205) 3 , where R204 and R205 are the same or different from each other and are each independently hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Or it is a substituted or unsubstituted aryl group.
- the hydrocarbon ring group may be an aromatic ring, an aliphatic ring, or a ring in which an aromatic ring and an aliphatic ring are condensed.
- a combination of substituents means a substituent in which two or more of the exemplified substituents are connected.
- substituents for example, hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; cross-linking group; Or, in a combination thereof, 'combination' means a substituent in which two or more of the above-exemplified substituents are connected.
- it may have a structure in which an alkyl group and a cross-linkable group are linked, or a structure in which an alkyl group is linked to an aryl group, but is not limited thereto.
- a crosslinkable group may refer to a reactive substituent that crosslinks compounds by exposing them to heat, light, and/or radiation.
- Crosslinking can be created by heat treatment, light irradiation, and/or radiation irradiation, where radicals generated as carbon-carbon multiple bonds and cyclic structures are decomposed are connected.
- crosslinking group is one of the following structures.
- L30 to L36 are the same or different from each other and are each independently directly bonded; -O-; -COO-; Substituted or unsubstituted alkylene group; Substituted or unsubstituted arylene group; or a combination thereof,
- the is the site bound to Chemical Formula 3.
- the first unit is a unit having two attachment points.
- Formula 1 is the following Formula 1-1.
- Ar1, Ar2, L1, L2, R11 to R16, l1 and l2 are the same as defined in Formula 1 above,
- R1, R2, R2' and R3 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group.
- L1 and L2 are the same as or different from each other, and each independently represents a substituted or unsubstituted arylene group having 6 to 30 carbon atoms.
- L1 and L2 are the same or different from each other, and are each independently a substituted or unsubstituted phenylene group; Substituted or unsubstituted biphenylene group; Substituted or unsubstituted terphenylene group; Or a substituted or unsubstituted naphthylene group.
- L1 and L2 are the same as or different from each other, and are each independently a phenylene group; Biphenylene group; Terphenylene group; Or it is a naphthylene group.
- Formula 1 is the following Formula 1-2.
- Ar1, Ar2, R1 to R3, R11 to R16 and r1 to r3 are the same as defined in Formula 1 above,
- R17 and R18 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r17 and r18 are each integers of 1 to 4, and when r17 and r18 are each 2 or more, the substituents in each parenthesis are the same or different,
- p1 and p2 are each integers from 1 to 3, and when p1 and p2 are each 2 or more, the structures in each parenthesis are the same or different from each other,
- Ar1 and Ar2 are the same or different from each other and are substituted or unsubstituted arylene groups having 6 to 30 carbon atoms.
- Ar1 and Ar2 are the same as or different from each other, and are each independently a substituted or unsubstituted phenylene group; Substituted or unsubstituted biphenylene group; Substituted or unsubstituted terphenylene group; Or a substituted or unsubstituted naphthylene group.
- Formula 1 is the following Formula 1-3.
- R1 to R3, R11 to R16 and r1 to r3 are the same as defined in Formula 1 above,
- R17, R18, R20 and R21 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r17, r18, r20 and r21 are each integers of 1 to 4, and when r17, r18, r20 and r21 are each 2 or more, the substituents in each parenthesis are the same or different,
- p1 to p4 are each integers of 1 to 3, and when p1 to p4 are each 2 or more, the structures in each parenthesis are the same or different from each other,
- Formula 1 is the following Formula 1-4.
- R11 to R16 are the same as defined in Formula 1 above,
- R1, R2, R2', R3, R17, R18, R20 and R21 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r17, r18, r20 and r21 are each integers of 1 to 4, and when r17, r18, r20 and r21 are each 2 or more, the substituents in each parenthesis are the same or different,
- p1 to p4 are each integers of 1 to 3, and when p1 to p4 are each 2 or more, the structures in each parenthesis are the same or different from each other,
- R1 to R3 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R1 to R3 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
- R1 to R3 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R1 to R3 are the same as or different from each other, and are each independently hydrogen; Or it is an alkyl group.
- At least one of R1 to R3 is a substituted or unsubstituted alkyl group.
- R1 to R3 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group, and at least one of R1 to R3 is a substituted or unsubstituted alkyl group.
- R1 to R3 are the same as or different from each other, and are each independently hydrogen; Or, it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and at least one of R1 to R3 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R1, R2, R2', and R3 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R1, R2, R2', and R3 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
- R1, R2, R2', and R3 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R1, R2, R2', and R3 are the same or different from each other, and are each independently hydrogen; Or it is an alkyl group.
- At least one of R1, R2, R2', and R3 is a substituted or unsubstituted alkyl group.
- R1, R2, R2', and R3 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group, and at least one of R1, R2, R2' and R3 is a substituted or unsubstituted alkyl group.
- R1, R2, R2', and R3 are the same or different from each other, and are each independently hydrogen; Or, it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and at least one of R1, R2, R2' and R3 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R1 and R3 are hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R1 and R3 are hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R1 and R3 are hydrogen; Or it is an alkyl group.
- R1 and R3 are hydrogen; Or it is a methyl group.
- R2 is a substituted or unsubstituted alkyl group.
- R2 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R2 is an alkyl group having 1 to 10 carbon atoms.
- R2 is a hexyl group.
- R2 and R2' are the same or different from each other, and each independently represents a substituted or unsubstituted alkyl group.
- R2 and R2' are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R2 and R2' are the same as or different from each other, and are each independently an alkyl group having 1 to 10 carbon atoms.
- R2 and R2' are each a hexyl group.
- R11 to R16 are the same as or different from each other, and are each independently a methyl group; ethyl group; Or it is a profiler.
- R11 to R16 are each a methyl group.
- R17, R18, R20, and R21 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R17, R18, R20, and R21 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; Or it is an alkyl group.
- R17, R18, R20, and R21 are each hydrogen.
- p1 to p4 are each 1 or 2.
- p1 and p2 are each 1.
- p3 and p4 are each 2.
- Formula 1 is any one of the following structures.
- * is the point of attachment within the polymer.
- hydrogen can be replaced with deuterium.
- hydrogen included in the above structure can be replaced with deuterium.
- the third unit is a unit having two attachment points.
- Formula 4 is the following Formula 4-1.
- R4 to R6, Ar3, Ar4, L3, L4, r4 to r6, l3 and l4 are the same as defined in Formula 4 above,
- R23 and R24 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r23 and r24 are each integers from 1 to 5, and when r23 and r24 are each 2 or more, the substituents in each parenthesis are the same as or different from each other,
- Formula 4 is the following Formula 4-2.
- R4 to R6, Ar3, Ar4, L3, L4, r4 to r6, l3 and l4 are the same as defined in Formula 4 above,
- R23 and R24 are the same or different from each other and are each independently deuterium; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R25 and R26 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r25 and r26 are each integers of 1 to 4, and when r25 and r26 are each 2 or more, the substituents in each parenthesis are the same as or different from each other,
- Formula 4 is the following Formula 4-3.
- R4 to R6, Ar3, Ar4 and r4 to r6 are the same as defined in Formula 4 above,
- R23 and R24 are the same or different from each other and are each independently deuterium; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R25 to R28 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r25 to r28 are each an integer of 1 to 4, and when r25 to r28 are each 2 or more, the substituents in each parenthesis are the same or different,
- p5 and p6 are each integers of 1 to 3, and when p5 and p6 are each 2 or more, the structures in each parenthesis are the same or different from each other,
- Formula 4 is the following Formula 4-4.
- R4 to R6 and r4 to r6 are the same as defined in Formula 4 above,
- R23 and R24 are the same or different from each other and are each independently deuterium; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R25 to R30 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r25 to r30 are each an integer of 1 to 4, and when r25 to r30 are each 2 or more, the substituents in each parenthesis are the same or different,
- p5 to p8 are each an integer of 1 to 3, and when p5 to p8 are each 2 or more, the structures in each parenthesis are the same or different from each other,
- Formula 4 is the following Formula 4-5.
- Ar3, Ar4, L3, L4, l3 and l4 are the same as defined in Formula 4 above,
- R4, R5, R5', R6, R23 and R24 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r23 and r24 are each integers from 1 to 5, and when r23 and r24 are each 2 or more, the substituents in each parenthesis are the same or different from each other,
- Formula 4 is the following Formula 4-6.
- Ar3, Ar4, L3, L4, l3 and l4 are the same as defined in Formula 4 above,
- R4, R5, R5', R6 and R25 and R26 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R23 and R24 are the same or different from each other and are each independently deuterium; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r25 and r26 are each integers from 1 to 4, and when r25 and r26 are each 2 or more, the substituents in each parenthesis are the same or different,
- Formula 4 is the following Formula 4-7.
- R4, R5, R5', R6 and R25 to R30 are the same or different from each other and are each independently hydrogen; heavy hydrogen; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- R23 and R24 are the same or different from each other and are each independently deuterium; halogen group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted silyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Substituted or unsubstituted arylamine group; Or a substituted or unsubstituted siloxane group,
- r25 to r30 are each integers of 1 to 4, and when r25 to r30 are each 2 or more, the substituents in each parenthesis are the same or different,
- p5 to p8 are each an integer of 1 to 3, and when p5 to p8 are each 2 or more, the structures in each parenthesis are the same or different from each other,
- R4 to R6 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R4 to R6 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
- R4 to R6 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R4 to R6 are the same as or different from each other, and are each independently hydrogen; Or it is an alkyl group.
- At least one of R4 to R6 is a substituted or unsubstituted alkyl group.
- R4 to R6 are the same as or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group, and at least one of R4 to R6 is a substituted or unsubstituted alkyl group.
- R4 to R6 are the same as or different from each other, and are each independently hydrogen; Or, it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and at least one of R4 to R6 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R4, R5, R5', and R6 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R4, R5, R5', and R6 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
- R4, R5, R5', and R6 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R4, R5, R5', and R6 are the same or different from each other, and are each independently hydrogen; Or it is an alkyl group.
- At least one of R4, R5, R5', and R6 is a substituted or unsubstituted alkyl group.
- R4, R5, R5', and R6 are the same or different from each other, and are each independently hydrogen; Or it is a substituted or unsubstituted alkyl group, and at least one of R4, R5, R5' and R6 is a substituted or unsubstituted alkyl group.
- R4, R5, R5', and R6 are the same or different from each other, and are each independently hydrogen; Or, it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, and at least one of R4, R5, R5' and R6 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R4 and R6 are hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R4 and R6 are hydrogen; Or it is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R4 and R6 are hydrogen; Or it is an alkyl group.
- R4 and R6 are hydrogen; Or it is a methyl group.
- R5 is a substituted or unsubstituted alkyl group.
- R5 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R5 is an alkyl group having 1 to 10 carbon atoms.
- R5 is a hexyl group.
- R5 and R5' are the same or different from each other, and each independently represents a substituted or unsubstituted alkyl group.
- R5 and R5' are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms.
- R5 and R5' are the same as or different from each other, and are each independently an alkyl group having 1 to 10 carbon atoms.
- R5 and R5' are each a hexyl group.
- R23 and R24 are the same or different from each other, and each independently represents a substituted or unsubstituted alkyl group.
- R23 and R24 are the same as or different from each other, and are each independently a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms.
- R23 and R24 are the same as or different from each other, and are each independently a straight-chain alkyl group having 1 to 30 carbon atoms; Or it is a branched chain alkyl group having 4 to 30 carbon atoms.
- R23 and R24 are the same as or different from each other, and are each independently a straight-chain alkyl group having 1 to 15 carbon atoms; Or it is a branched chain alkyl group having 4 to 15 carbon atoms.
- R25 to R30 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; Or it is a substituted or unsubstituted alkyl group.
- R25 to R30 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; Or it is an alkyl group.
- R25 to R30 are each hydrogen.
- p5 to p8 are each 1 or 2.
- p5 and p6 are each 1.
- p7 and p8 are each 2.
- Formula 4 is any one of the following structures.
- the second unit is a unit having three or four attachment points.
- Y is a direct bond; Or it is a substituted or unsubstituted arylene group.
- Y is a direct bond; Or a substituted or unsubstituted phenylene group.
- Formula 2 is any one of the following Formulas 2-1 to 2-4.
- Z1 is CRa; SiRa; N; Or a trivalent substituted or unsubstituted aryl group,
- Z2 and Z3 are the same or different from each other and are each independently C; Si; Or a tetravalent substituted or unsubstituted aryl group,
- L10 is directly bonded; Or a substituted or unsubstituted arylene group,
- Ra is hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Or a substituted or unsubstituted aryl group,
- R50 to R60 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; halogen group; Cyano group; Alkoxy group; Aryloxy group; siloxane group; Substituted or unsubstituted amine group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Or, it is a cross-linkable group, and adjacent groups can bond to each other to form a ring,
- r50 to r59 are each an integer of 1 to 4
- r60 is an integer of 1 to 5
- the substituents in each parenthesis are the same or different
- Formula 2 is Formula 2-1.
- L10 is a substituted or unsubstituted arylene group.
- Z1 is CH; SiH; N; Or it is a substituted or unsubstituted trivalent aryl group.
- Z1 is CH; SiH; N; Or it is a substituted or unsubstituted trivalent phenyl group.
- Z1 is N; Or it is a trivalent phenyl group.
- L10 is a direct bond; Or it is a substituted or unsubstituted arylene group having 6 to 30 carbon atoms.
- L10 is a direct bond; Or it is an arylene group having 6 to 30 carbon atoms.
- L10 is a direct bond; Or it is a phenylene group.
- L10 is a direct bond
- Formula 2 is Formula 2-2.
- Z2 is C; Or Si.
- Formula 2 is Formula 2-3.
- Z3 is C; Or Si.
- Formula 2 is Formula 2-4.
- Formula 2 is any one of the following structures.
- R50 to R61 and R52' are the same or different from each other, and are each independently hydrogen; heavy hydrogen; halogen group; Cyano group; Alkoxy group; Aryloxy group; siloxane group; Substituted or unsubstituted amine group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Or, it is a cross-linkable group, and adjacent groups can bond to each other to form a ring,
- r50 to r59 and r52' are each an integer of 1 to 4
- r60 is an integer of 1 to 5
- r61 is an integer of 1 to 3
- the substituent in each parenthesis are the same or different from each other
- R50 to R61 and R52' are each hydrogen.
- Formula 2 is one of the structures below.
- * is the point of attachment within the polymer.
- Formula 2 is one of the following structures.
- * is the point of attachment within the polymer.
- Formula 2 is one of the following structures.
- * is the point of attachment within the polymer.
- E is an end-capping unit of the polymer.
- E is a unit having only one attachment point.
- E is a substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; cross-linking group; or a combination thereof.
- E is a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms; A substituted or unsubstituted aryl group having 6 to 30 carbon atoms; cross-linking group; or a combination thereof.
- E is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms; Substituted or unsubstituted phenyl group; Substituted or unsubstituted biphenyl group; cross-linking group; or a combination thereof.
- E is a crosslinkable group; Or any of the following structures.
- R70 to R72 are the same as or different from each other, and are each independently hydrogen; heavy hydrogen; Substituted or unsubstituted alkyl group; Substituted or unsubstituted aryl group; Substituted or unsubstituted heterocyclic group; Or a cross-linking group,
- L70 is directly bonded; Substituted or unsubstituted alkylene group; Or a substituted or unsubstituted arylene group,
- i1 is an integer from 1 to 10, and when i1 is 2 or more, 2 or more L70s are the same or different,
- n70 and n72 are each an integer of 1 to 5
- n71 is an integer of 1 to 4
- the substituents in each parenthesis are the same or different from each other
- E is any one of the following structures.
- R70 to R72, L70, i1, n70 to n72, and * are as described above.
- R70 to R72 are the same or different from each other, and are each independently hydrogen; heavy hydrogen; an alkyl group having 1 to 10 carbon atoms; Or it is a cross-linking group.
- L70 is a direct bond; Alkylene group having 1 to 10 carbon atoms; Or it is an arylene group having 6 to 30 carbon atoms.
- E is any one of the following structures.
- * is the point of attachment within the polymer.
- E is any one of the following structures.
- * is the point of attachment within the polymer.
- the polymer is represented by the following formula (5).
- A1 is the first unit represented by Formula 1 above,
- B1 is the second unit represented by Formula 2 above,
- C1 is different from the first unit and is a third unit represented by Formula 4,
- E1 and E2 are the same or different from each other and are each terminal groups represented by Formula 3 above,
- a, b, and c are the mole fractions, respectively, where a is a real number of 0 ⁇ a ⁇ 1, b is a real number of 0 ⁇ b ⁇ 1, c is a real number of 0 ⁇ c ⁇ 1, and a+b+c is 1 am.
- a, b, and c are determined according to the equivalence ratio of monomers used in preparing the polymer.
- a is a real number between 0.05 and 1.
- a is a real number between 0.1 and 1.
- a is a real number of 0.05 to 0.9.
- a is a real number between 0.1 and 0.9.
- a is a real number of 0.2 to 0.9.
- b is a real number greater than 0 and less than 1.
- b is a real number greater than 0 and less than or equal to 0.9.
- b is a real number of 0.05 to 0.9.
- b is a real number of 0.05 to 0.8.
- b is a real number of 0.1 to 0.8.
- c is a real number greater than 0 and less than 1.
- c is a real number greater than 0 and less than or equal to 0.9.
- c is a real number greater than 0 and less than or equal to 0.8.
- a is a real number between 0.05 and less than 1
- b is a real number between 0 and less than 1
- c is a real number between 0 and less than 1.
- a is a real number between 0.05 and 0.9
- b is a real number between 0.05 and 0.8
- c is a real number between 0 and 0.9.
- a, b, and c are mole fractions based on the sum of A1, B1, and C1, not based on the mole fraction of the entire polymer represented by Formula 5 including E1 and E2.
- the molar ratio of (A1+B1+C1):(E1+E2) is 40:60 to 98:2.
- the polymer is an alternating polymer, a block polymer, or a random polymer.
- Formula 5 does not only mean that A1, B1, and C1 are in that order in the polymer.
- A1, B1, and C1 may be in various orders.
- the polymer may be E1-A1-B1-C1-E2, E1-A1-C1-B1-E2, E1-B1-A1-C1-E2, E1-B1-C1-A1-E2, E1-C1-A1
- the order may be -B1-E2 or E1-C1-B1-A1-E2.
- Chemical Formula 5 does not have a structure in which only A1, B1, and C1 are connected one by one in the polymer.
- the polymer can be connected in various content ranges within the polymer, such as E1-A1-B1-A1-C1-E2, E1-A1-C1-B1-C1-E2, E1-A1-B1-C1-A1-E2, etc. there is.
- the content range of A1, B1, and C1 is determined according to the equivalence ratio of the monomers used when producing the polymer.
- the weight average molecular weight (Mw) of the polymer is 10,000 g/mol to 3,000,000 g/mol. Specifically, the weight average molecular weight (Mw) of the polymer is 10,000 g/mol to 1,000,000 g/mol. More specifically, the weight average molecular weight (Mw) of the polymer is 10,000 g/mol to 300,000 g/mol.
- the number average molecular weight (Mw) of the polymer is 5,000 g/mol to 3,000,000 g/mol. Specifically, the weight average molecular weight (Mw) of the polymer is 5,000 g/mol to 1,000,000 g/mol. More specifically, the weight average molecular weight (Mw) of the polymer is 10,000 g/mol to 300,000 g/mol.
- the molecular weight of the polymer is measured by gel permeation chromatography (GPC) method.
- the molecular weight can be measured as a relative value to a standard PS (standard polystyrene) sample through GPC (Gel Permeation Chromatography, waters breeze) using THF (tetrahydrofuran) as an eluent, and in detail, gel permeation This is the value obtained by calculating the polystyrene conversion weight average molecular weight (Mw) and number average molecular weight (Mw) by chromatography (GPC: gel permeation chromatography, PLgel HFIPGEL, Agilent Technologies).
- GPC Gel Permeation Chromatography, waters breeze
- THF tetrahydrofuran
- the polymer to be measured is dissolved in tetrahydrofuran to a concentration of 1% and injected at 10 ⁇ l into the GPC at a flow rate of 0.3 mL/min and at a sample concentration of 2.0 mg/mL (100 ⁇ l injection). Analysis can be performed at 30°C.
- the column is made by connecting two PLgel HFIPGELs from Waters in series, and the detector is measured at 40°C using an RI detector (2414, manufactured by Agilent Waters), and then the data can be processed using ChemStation.
- the viscosity is appropriate, making it easy to manufacture inkjet devices and organic light-emitting devices using fine pixels.
- the polymer has a molecular weight distribution (PDI) of 1 to 10.
- PDI molecular weight distribution
- the polymer has a molecular weight distribution of 1 to 5. More preferably, the polymer has a molecular weight distribution of 1 to 4.
- the molecular weight distribution (PDI) is calculated through the following equation (1).
- Equation (1): PDI weight average molecular weight (Mw)/number average molecular weight (Mn)
- a large molecular weight distribution of a polymer means that molecules of various molecular weights are distributed, which means that it is difficult to synthesize the polymer reproducibly. Therefore, the larger the molecular weight distribution, the lower the uniformity of the polymer. In other words, the closer the molecular weight distribution is to 1, the more homogeneous the polymer is produced.
- a first unit represented by Formula 1 in the polymer may be distributed to optimize the properties of the polymer.
- the mole fraction of the first unit represented by Formula 1 in the polymer is a1
- the mole fraction of the second unit represented by Formula 2 is b1
- the mole fraction of the third unit is c1
- the mole fraction of the terminal group represented by Formula 3 is e1
- a1 is a real number between 0.05 and 1.
- a1 is a real number of 0.05 to 0.95.
- a1 is a real number of 0.1 to 0.9.
- a1 is a real number of 0.05 to 0.8.
- b1 is a real number between 0.05 and 1.
- b1 is a real number of 0.05 to 0.95.
- b1 is a real number of 0.05 to 0.8.
- b1 is a real number of 0.1 to 0.8.
- c1 is a real number greater than 0 and less than 1.
- c1 is a real number greater than 0 and less than or equal to 0.95.
- c1 is a real number greater than 0 and less than or equal to 0.9.
- c1 is a real number greater than 0 and less than or equal to 0.8.
- c1 is a real number between 0.05 and 1.
- c1 is a real number of 0.05 to 0.95.
- c1 is a real number of 0.1 to 0.9.
- c1 is a real number of 0.05 to 0.8.
- e1 is a real number between 0.05 and 1.
- e1 is a real number of 0.05 to 0.95.
- e1 is a real number between 0.1 and 0.9.
- e1 is a real number of 0.05 to 0.8.
- e1 is a real number of 0.1 to 0.8.
- a1 is a real number between 0.05 and less than 1
- b1 is a real number between 0.05 and less than 1
- c1 is a real number between 0 and less than 1
- e1 is a real number between 0.05 and less than 1
- a1 +b1+c1+e1 1.
- a1 is a real number between 0.05 and 0.8
- b1 is a real number between 0.05 and 0.8
- c1 is a real number between 0 and 0.8
- e1 is a real number between 0.05 and 0.8
- a1+b1+ c1+e1 1.
- a1 is a real number between 0.05 and 0.8
- b1 is a real number between 0.05 and 0.8
- c1 is a real number between 0.05 and 0.8
- e1 is a real number between 0.05 and 0.8
- a1+b1+c1 +e1 1.
- the polymer has any one of the following structures.
- a1 is a real number of 0 ⁇ a1 ⁇ 1
- b1 is a real number of 0 ⁇ b1 ⁇ 1
- c1 is a real number of 0 ⁇ c1 ⁇ 1
- e1 is a real number of 0 ⁇ e1 ⁇ 1
- a1 +b1+c1+e1 is 1.
- a1 is a real number between 0.05 and 0.8
- b1 is a real number between 0.05 and 0.8
- c1 is a real number between 0 and 0.8
- e1 is a real number between 0.05 and 0.8
- a1+b1+ c1+e1 1.
- a1 is a real number between 0.05 and 0.8
- b1 is a real number between 0.05 and 0.8
- c1 is a real number between 0.05 and 0.8
- e1 is a real number between 0.05 and 0.8
- a1+b1+c1 +e1 1.
- a1, b1, c1 and e1 are determined depending on the equivalent weight of the monomer added during the production of the polymer.
- the polymer may be manufactured using known polymerization techniques. For example, production methods such as Suzuki, Yamamoto, Stille, C-N coupling reaction using a metal catalyst, and arylation reaction using a metal catalyst can be applied.
- the polymer may be substituted with deuterium.
- deuterium can be replaced by applying a method using a precursor material.
- deuterium can be replaced by treating the non-deuterated monomer and/or polymer with a deuterated solvent in the presence of a Lewis acid H/D exchange catalyst.
- the molecular weight of the polymer can be controlled by adjusting the ratio of monomers used. Additionally, in some embodiments, the molecular weight of the polymer can be controlled using a quenching reaction.
- the polymer may be used as a hole transport material.
- the polymer may be a ‘polymer for hole transport’.
- the 'layer', 'membrane', and 'film' may be formed by any conventional coating technique, including vapor deposition, liquid deposition (continuous and discontinuous techniques), and thermal transfer.
- Continuous deposition techniques include, but are not limited to, spin coating, gravure coating, curtain coating, dip coating, slot-die coating, spray coating, and continuous nozzle coating.
- Discontinuous deposition techniques include, but are not limited to, inkjet printing, gravure printing, and screen printing.
- the polymer has an intrinsic viscosity of less than 20 cP. This is particularly useful for inkjet printing applications, where the lower viscosity allows a thicker solution to be dispensed. Specifically, the polymer has an intrinsic viscosity of less than 15 cP, more specifically less than 10 cP, and more specifically less than 8 cP.
- the intrinsic viscosity of the polymer is 1 cP or more and less than 20 cP, specifically 1 cP to 10 cP, and more specifically 1 cP to 8 cP.
- the intrinsic viscosity is a value measured at 25°C using an Ubbelohde viscometer after dissolving the polymer to be measured in chloroform solvent at a concentration of 0.5 g/dl.
- One embodiment of the present specification provides a coating composition containing the above-described polymer.
- the coating composition further includes a solvent. In one embodiment of the present specification, the coating composition includes the polymer and a solvent.
- the coating composition may be in a liquid form.
- the “liquid phase” means that it is in a liquid state at room temperature and pressure.
- the solvent does not dissolve the material applied to the lower layer.
- a solvent that does not dissolve the material of the lower layer is used.
- a solvent that does not dissolve the materials of the lower layer first electrode, hole injection layer, etc.
- the coating composition has improved solvent resistance upon heat treatment after coating.
- the coating composition is prepared using a solvent that dissolves the polymer and the layer is prepared through a solution process, it may be resistant to the same solvent after heat treatment.
- the solvent included in the coating composition is, for example, chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o-dichlorobenzene, etc.
- Ether-based solvents such as tetrahydrofuran and dioxane
- Aromatic hydrocarbon solvents such as toluene, xylene, trimethylbenzene, and mesitylene
- Ketone-based solvents such as acetone, methyl ethyl ketone, and cyclohexanone
- Ester solvents such as ethyl acetate, butyl acetate, and ethyl cellosolve acetate
- Polyhydric acids such as ethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, dimethoxyethane, propylene glycol, diethoxymethane, triethylene glycol monoethyl ether, glycerin, 1,2-hexanediol, etc.
- Alcohol-based solvents such as methanol, ethanol, propanol, isopropanol, and cyclohexanol
- Sulfoxide-based solvents such as dimethyl sulfoxide
- Amide-based solvents such as N-methyl-2-pyrrolidone and N,N-dimethylformamide
- Benzoate-based solvents such as methyl benzoate, butyl benzoate, and 3-phenoxy benzoate
- tetralin but any solvent that can dissolve or disperse the polymer according to an exemplary embodiment of the present specification can be used, and is not limited to these.
- one type of solvent may be used alone, or two or more types of solvent may be mixed.
- the boiling point of the solvent is preferably 40°C to 350°C, more preferably 80°C to 330°C, but is not limited thereto.
- the concentration of the polymer in the coating composition is preferably 0.1 wt/v% to 20 wt/v%, more preferably 0.5 wt/v% to 10 wt/v%. It is not limited.
- the remaining components other than the polymer in the coating composition are solvents.
- An exemplary embodiment of the present specification includes a first electrode; second electrode; and at least one organic material layer provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer includes the polymer.
- the organic material layer of the organic light emitting device of the present specification may have a single-layer structure, or may have a multi-layer structure in which two or more organic material layers are stacked.
- the organic light-emitting device of the present invention includes an organic material layer that includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, a layer that performs both hole injection and hole transport, a layer that performs both electron injection and electron transport, etc. It can have a structure.
- the structure of the organic light emitting device is not limited to this and may include fewer organic layers.
- the organic material layers may be formed of the same material or different materials.
- the organic light emitting device includes a first electrode; second electrode; and a light-emitting layer provided between the first electrode and the second electrode, and further comprising a single-layer organic material layer between the light-emitting layer and the first electrode, wherein the organic material layer includes the polymer.
- the organic light emitting device includes a first electrode; second electrode; and a light-emitting layer provided between the first electrode and the second electrode, and further comprising a multi-layered organic material layer between the light-emitting layer and the first electrode, where at least one layer of the organic material layer includes the polymer.
- the organic material layer containing the polymer is a hole injection layer, a hole transport layer, or a layer that performs hole injection and hole transport simultaneously.
- the organic light emitting device includes a first electrode; second electrode; and a light-emitting layer provided between the first electrode and the second electrode, further comprising at least one of a hole injection layer, a hole transport layer, and an electron blocking layer between the light-emitting layer and the first electrode, and the hole injection layer and the hole At least one of the transport layer and the electron blocking layer includes the polymer.
- the organic light emitting device includes a first electrode; second electrode; and a light-emitting layer provided between the first electrode and the second electrode, and a hole injection layer and a hole transport layer between the first electrode and the light-emitting layer, wherein at least one of the hole injection layer and the hole transport layer is made of the polymer.
- the organic light emitting device includes a first electrode; hole injection layer; Hole transport layer; light emitting layer; and a second electrode are sequentially stacked, and at least one of the hole injection layer and the hole transport layer includes the polymer.
- the organic light emitting device includes a first electrode; hole injection layer; Hole transport layer; light emitting layer; and a second electrode are sequentially stacked, and the hole injection layer or the hole transport layer includes the polymer.
- the organic light emitting device includes a first electrode; hole injection layer; Hole transport layer; light emitting layer; and a second electrode are sequentially stacked, and the hole transport layer includes the polymer.
- an additional organic layer may be further included between the light emitting layer and the second electrode.
- a single-layer organic material layer may be further included between the light-emitting layer and the second electrode.
- a multi-layer organic material layer may be further included between the light emitting layer and the second electrode.
- one or more layers among a hole blocking layer, an electron injection layer, an electron transport layer, and a layer that performs both electron injection and electron transport may be further included between the light emitting layer and the second electrode.
- the organic light emitting device includes a first electrode; hole injection layer; Hole transport layer; light emitting layer; electron injection and transport layer; and a second electrode are sequentially stacked, and at least one of the hole injection layer and the hole transport layer includes the polymer.
- the organic light emitting device includes a first electrode; hole injection layer; Hole transport layer; light emitting layer; electron injection and transport layer; and a second electrode are sequentially stacked, and the hole injection layer or the hole transport layer includes the polymer.
- the organic light emitting device includes a first electrode; hole injection layer; Hole transport layer; light emitting layer; electron injection and transport layer; and a second electrode are sequentially stacked, and the hole transport layer includes the polymer.
- FIGS. 1 and 2 The structure of an organic light emitting device according to an exemplary embodiment of the present specification is illustrated in FIGS. 1 and 2.
- Figure 1 illustrates the structure of an organic light emitting device in which a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4 are sequentially stacked.
- Figure 2 shows an organic light emitting device in which a substrate (1), anode (2), hole injection layer (5), hole transport layer (6), light emitting layer (3), electron injection and transport layer (7), and cathode (4) are sequentially stacked. The structure of the device is illustrated.
- FIG. 1 and 2 illustrate an organic light emitting device, and the structure of the organic light emitting device of the present invention is not limited thereto.
- the first electrode is an anode
- the second electrode is a cathode
- the first electrode is a cathode
- the second electrode is an anode
- 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 light emitting device of the present invention may be stacked in a structure as shown in the example below.
- electroctron transport layer/electron injection layer can be replaced with “electron injection and transport layer” or “layer that performs electron injection and electron transport simultaneously.”
- the organic light emitting device of the present invention has a structure such as 'anode/hole injection layer/hole transport layer/light emitting layer/electron injection and transport layer/cathode' in which the electron transport layer/electron injection layer of (7) is replaced with an electron injection and transport layer. can be laminated.
- hole injection layer/hole transport layer can be replaced with “hole injection and transport layer” or “layer that performs hole injection and hole transport simultaneously.”
- the organic light emitting device of the present specification can be manufactured using materials and methods known in the art, except that at least one organic material layer is manufactured to include the polymer. Specifically, the organic light emitting device may be formed using a coating composition in which at least one organic layer includes the polymer.
- the organic light emitting device of the present specification can 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 is used to deposit a metal or a conductive metal oxide or an alloy thereof on the substrate to form an anode.
- It can be manufactured by forming an organic material layer including a hole injection layer, a hole transport layer, a light-emitting layer, and an electron injection and transport layer thereon, and then depositing a material that can be used as a cathode thereon.
- an organic light-emitting device can be made by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
- This specification also provides a method of manufacturing an organic light-emitting device formed using the coating composition.
- the organic material layer formed using the coating composition is formed using spin coating.
- the organic 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 and can be formed by a printing method, so it is economical in terms of time and cost when manufacturing a device.
- forming an organic layer formed using the coating composition includes coating the coating composition on the first electrode; and heat-treating or light-treating the coated coating composition.
- the heat treatment time in the heat treatment step may be less than 1 hour. Specifically, it may be within 30 minutes.
- the atmosphere in which the organic layer formed using the coating composition is heat-treated is preferably an inert gas atmosphere such as argon or nitrogen.
- the organic material layer formed using the coating composition including a heat treatment or light treatment step
- the resistance to solvent increases, so that a multilayer can be formed by repeatedly performing the solution deposition and crosslinking methods, and the stability increases, thereby improving the device's lifespan characteristics. can increase.
- layers other than the organic layer formed using the coating composition are formed through spin coating, printing, or deposition.
- the coating composition when the coating composition is applied to a hole injection layer or a hole transport layer, the hole injection layer or the hole transport layer may be formed by spin coating, and other organic layers may be formed by spin coating, printing, or deposition.
- the upper layer provided in contact with the organic layer formed using the coating composition may be formed through spin coating.
- the coating composition when the coating composition is applied to a hole transport layer, the hole transport layer is formed by spin coating, the light-emitting layer formed on the hole transport layer to contact the hole transport layer is formed by spin coating, and the light-emitting layer is formed on the light-emitting layer.
- the electron injection and transport layer may be formed by a deposition process.
- the anode material is generally preferably a material with a large work function to ensure smooth hole injection into the organic layer.
- anode materials that can be used in the present invention include metals such as vanadium, chromium, copper, zinc, and gold, or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); Combinations of metals and oxides such as ZnO:Al or SnO 2 :Sb; Conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene](PEDOT), polypyrrole, and polyaniline are included, but are not limited to these.
- the cathode material is preferably a material with a small work function to facilitate electron injection into the organic material layer.
- cathode materials include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead, or alloys thereof; There are, but are not limited to, multi-layered materials such as LiF/Al or LiO 2 /Al.
- the hole injection layer is a layer that injects holes from an electrode, and the hole injection material has the ability to transport holes and has an excellent hole injection effect on the light-emitting layer or light-emitting material, and is a hole injection material in the light-emitting layer.
- a compound that prevents the movement of generated excitons to the electron injection layer or electron injection material and has excellent thin film forming ability is preferred.
- the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the anode material and the HOMO of the surrounding organic material layer.
- hole injection materials include metal porphyrin, oligothiophene, arylamine-based organic substances, hexanitrilehexaazatriphenylene-based organic substances, quinacridone-based organic substances, and perylene-based organic substances.
- the hole injection layer may be a carbazole-based compound, an arylamine-based compound, or a compound in which a substituted or unsubstituted carbazole and an arylamine group are linked, but is not limited to these.
- the hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the light-emitting layer, and the hole transport material can receive holes from the anode or the hole injection layer and transfer them to the light-emitting layer.
- a material with high mobility for holes is suitable.
- the hole transport layer includes the polymer.
- the light-emitting layer includes an organic compound.
- the organic compound is a material that can emit light in the visible range by transporting holes and electrons from the hole transport layer and the electron transport layer, respectively, and combining them, and a material with 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 compound; Compounds of the benzoxazole, benzthiazole and benzimidazole series; Poly(p-phenylenevinylene) (PPV) series polymer; Spiro compounds; polyfluorene; Rubrene, etc., but is not limited to these.
- Alq 3 8-hydroxy-quinoline aluminum complex
- Carbazole-based compounds dimerized styryl compounds
- BAlq 10-hydroxybenzoquinoline-metal compound
- Compounds of the benzoxazole, benzthiazole and benzimidazole series Compounds of the benzoxazole, benzthiazole and benzimidazole series
- Poly(p-phenylenevinylene) (PPV) series polymer Poly(p-phenylenevinylene) (PPV) series polymer
- the light emitting layer may include a host material and a dopant material.
- Host materials include condensed aromatic ring derivatives or heterocyclic ring-containing compounds.
- condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds
- heterocyclic ring-containing compounds include carbazole derivatives, dibenzofuran derivatives, and ladder-type derivatives. These include, but are not limited to, furan compounds and pyrimidine derivatives.
- Dopant materials include aromatic amine derivatives, strylamine compounds, boron complexes, compounds containing boron, fluoranthene compounds, and metal complexes.
- aromatic amine derivatives include condensed aromatic ring derivatives substituted with a substituted or unsubstituted arylamino group, such as fluorene, benzofluorene, pyrene, anthracene, chrysene, periplanthene, etc. substituted with an arylamino group.
- Rylamine compounds are compounds in which at least one arylvinyl group is substituted on a substituted or unsubstituted arylamine, and have one or two or more substituents selected from the group consisting of aryl group, silyl group, alkyl group, cycloalkyl group, and arylamino group. Substituted or unsubstituted.
- styrylamine compounds include styrylamine, styryldiamine, styryltriamine, and styryltetraamine, but are not limited thereto.
- metal complexes include iridium complex and platinum complex, but are not limited to these.
- the host material is an anthracene derivative
- the dopant material is a benzofluorene-based compound substituted with an arylamine group or a boron-containing compound.
- the host material is an anthracene derivative substituted or unsubstituted with deuterium
- the dopant material may be a bis(diarylamino)benzophylluorene-based compound or a boron-containing compound, but is not limited to these.
- the light emitting layer includes quantum dots.
- the light emitting layer may include mattress resin and quantum dots, and the type and content of quantum dots known in the art may be used.
- quantum dots When quantum dots are included in the emitting layer, a lower HOMO energy level is exhibited than when an organic compound is included in the emitting layer, so the common layer must also exhibit a low HOMO energy level. Since the compound according to an exemplary embodiment of the present specification contains a halogen group and thus exhibits a low HOMO energy level, quantum dots can be introduced into the light-emitting layer.
- the common layer is a hole injection layer, a hole transport layer, a layer that performs both hole injection and hole transport, an electron injection layer, an electron transport layer, or a layer that performs electron injection and electron transport simultaneously.
- the electron transport layer is a layer that receives electrons and transports electrons to the light-emitting layer.
- the electron transport material is a material that can easily receive electrons from the cathode and transfer them to the light-emitting layer, and has mobility for electrons. This large material is suitable. Specific examples include Al complex of 8-hydroxyquinoline; Complex containing Alq 3 ; organic radical compounds; Hydroxyflavone-metal complexes, etc., but are not limited to these.
- the electron transport layer can be used with any desired cathode material as used according to the prior art.
- suitable cathode materials are conventional materials with a low work function followed by an aluminum or silver layer. Specifically, cesium, barium, calcium, ytterbium and samarium, followed in each case by an aluminum layer or a silver layer.
- the electron injection layer is a layer that injects electrons from an electrode, has the ability to transport electrons, has an excellent electron injection effect with respect to the light-emitting layer or light-emitting material, and is a layer that injects electrons from the electrode.
- a compound that prevents migration to the hole injection layer and has excellent thin film forming ability is preferred.
- the metal complex compound includes 8-hydroxyquinolinato lithium, bis(8-hydroxyquinolinato)zinc, bis(8-hydroxyquinolinato)copper, and bis(8).
- -Hydroxyquinolinato)manganese tris(8-hydroxyquinolinato)aluminum, tris(2-methyl-8-hydroxyquinolinato)aluminum, tris(8-hydroxyquinolinato)gallium, bis.
- the hole blocking layer is a layer that blocks holes from reaching the cathode, and can generally be formed under the same conditions as the hole injection layer.
- the hole injection layer there are oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, BCP, aluminum complex, etc., but it is not limited to these.
- a layer adjacent to the organic material layer containing the polymer represented by Formula 1, for example, a bank layer, includes a compound having fluorine as a substituent.
- the polymer represented by Formula 1 when the polymer represented by Formula 1 is included in the hole transport layer, at least one of the bank layer, hole injection layer, and light emitting layer adjacent to the hole transport layer contains fluorine.
- the dipole moment varies due to fluorine, thereby forming a uniform layer. There is a possible effect.
- the organic light emitting device may be a front emitting type, a back emitting type, or a double-sided emitting type depending on the material used.
- Compound B-2 (0.382 mmol), Compound A-1 (0.382 mmol) 4,4''-dibromo-5'-(4-bromophenyl)-1,1':3',1''- Terphenyl (0.158 mmol) and 4-bromo-4'-propyl-1,1'-biphenyl (0.369 mmol) were placed in a round flask and dissolved in toluene (11 mL), followed by tetrakis(triphenylphosphine).
- Compound C-2 was prepared in the same manner as Synthesis Example 1 (2), except that Compound C-1 was used instead of Compound B-1 in Synthesis Example 1 (2).
- Polymer 2 was prepared in the same manner as (3) in Synthesis Example 1, except that Compound C-2 was used instead of Compound B-2 in (3) of Synthesis Example 1.
- Compound D-2 was prepared in the same manner as Synthesis Example 1 (2), except that Compound D-1 was used instead of Compound B-1 in Synthesis Example 1 (2).
- Polymer 3 was prepared in the same manner as (3) in Synthesis Example 1, except that Compound D-2 was used instead of Compound B-2 in (3) of Synthesis Example 1.
- Compound A-2 was prepared in the same manner as (1-1) to (1-4) in Synthesis Example 1, except that Compound Q-3 was used instead of Compound Q-2 in (1-2) of Synthesis Example 1. was manufactured.
- Polymer 4 was prepared in the same manner as Synthesis Example 1, except that Compound A-2 was used instead of Compound A-1 in (3) of Synthesis Example 1.
- Polymer 5 was prepared in the same manner as Synthesis Example 2, except that Compound A-2 was used instead of Compound A-1 in (2) of Synthesis Example 2.
- Polymer 6 was prepared in the same manner as Synthesis Example 3, except that Compound A-2 was used instead of Compound A-1 in (2) of Synthesis Example 3.
- Bis(1,5-cyclooctadiene)nickel(0) (2.42 mmol) was added to a 50mL Schlenk tube.
- 2,2'-Dipyridyl (2.42 mmol) and 1,5-cyclooctadiene (2.42 mmol) were added to the scintillation vial, followed by N,N'-dimethylformamide (5.5 mL) and toluene (11 mL). ) to prepare a second solution.
- the second solution was added to the Schlenk tube and stirred at 50°C for 30 minutes.
- the first solution was additionally added to the Schlenk tube and stirred at 50°C for 3 hours.
- the dried solid was dissolved in toluene (1% wt/v) and purified by passing through a column containing silica gel and basic aluminum oxide (6 g each).
- Polymer X-1 was prepared by triturating the obtained toluene solution in acetone.
- Equation (1): PDI weight average molecular weight (Mw)/number average molecular weight (Mn)
- Example 1-2 to 1-6 Example 1-2 to 1-6.
- Mn Number average molecular weight (Mn), weight average molecular weight (Mw), and molecular weight distribution (PDI) were measured in the same manner as in Example 1-1, except that the polymer of Table 1 below was used instead of polymer 1 in Example 1-1. Measured.
- Example 1-1 Number average molecular weight (Mn), weight average molecular weight (Mw), and molecular weight distribution (PDI) were measured in the same manner as in Example 1-1, except that the following polymer Q was used instead of polymer 1 in Example 1-1. .
- Mn Number average molecular weight (Mn), weight average molecular weight (Mw), and molecular weight distribution (PDI) were measured in the same manner as in Example 1-1, except that the polymer of Table 2 below was used instead of polymer 1 in Example 1-1. Measured.
- Example 1-1 One 26.8:18.3:26.8:28.1 32,000 86,000 2.69
- Example 1-2 2 26.8:18.3:26.8:28.1 35,000 91,000 2.60
- Example 1-3 3 28.5:17.9:28.5:25.1 39,000 126,000 3.23
- Example 1-4 28.8:19.4:28.8:23 38,000 122,000 3.21
- Examples 1-5 5 28.2:17.6:28.2:26 39,000 129,000 3.31
- Example 1-6 6 28.8:18.1:27.6:25.5 39,000 126,000 3.23
- Coating composition 1 was prepared by dissolving polymer 1 prepared in Synthesis Example 1 in toluene at a concentration of 2 wt%.
- Coating composition 2 was prepared by dissolving the following compound P-2 prepared in (1-3) of Synthesis Example 1 in toluene at a concentration of 2 wt%.
- Coating composition 3 was prepared by dissolving the following compound P-4 prepared in Synthesis Example 4 in toluene at a concentration of 2 wt%.
- the coating compositions 1 to 3 were spin-coated on glass to form a thin film, and then UV-vis absorption was measured. This thin film was again soaked in cyclohexanone for 3 minutes, dried, and UV-vis absorption was measured. The thin film retention rate was confirmed by comparing the size of the maximum peak of UV absorption before and after immersion.
- Figure 3 is a diagram showing the results of a film retention rate test of a thin film formed with coating composition 1.
- Figure 4 is a diagram showing the results of a film retention rate test of a thin film formed with coating composition 2.
- Figure 5 is a diagram showing the results of a film retention rate test of a thin film formed with coating composition 3.
- a glass substrate coated with a thin film of ITO (indium tin oxide) to a thickness of 1,500 ⁇ was placed in distilled water with a detergent dissolved in it and washed ultrasonically.
- a detergent from Fischer Co. was used, and distilled water filtered secondarily using a filter from Millipore Co. was used as distilled water.
- ultrasonic cleaning was repeated twice with distilled water for 10 minutes.
- the substrate was ultrasonic washed with a solvent of isopropyl alcohol and acetone and dried. The substrate was washed for 5 minutes and then dried.
- the cleaned and patterned ITO was treated with UV ozone for 10 minutes.
- a 2 wt% cyclohexanone solution containing the following compound A and the following compound B in a weight ratio of 8:2 was spin-coated on the ITO surface and the solvent was removed through heat treatment to form a hole injection layer about 40 nm thick.
- a toluene solution containing 1.5 wt% of Polymer 1 prepared in Synthesis Example 1 was spin-coated on the hole injection layer formed above, and the solvent was removed through heat treatment to form a hole transport layer with a thickness of about 100 nm.
- the deposition rate of organic materials was maintained at 0.4 ⁇ /sec to 1.0 ⁇ /sec, LiF of the cathode was maintained at 0.3 ⁇ /sec, aluminum was maintained at 2 ⁇ /sec, and the vacuum degree during deposition was 2 ⁇ 10 - 8 torr to 5 ⁇ 10 -6 torr was maintained.
- Examples 3-2 to 3-6 organic light-emitting devices were manufactured in the same manner as Example 3-1, except that the polymers in Table 3 below were used instead of polymer 1 in Example 3-1.
- Comparative Examples 3-1 to 3-4 were organic light-emitting devices in the same manner as Example 3-1, except that Polymer Q and Polymers X-1 to X-3 were used instead of Polymer 1 in Example 3-1. was manufactured.
- the measured values are at 1000 nits
- V is the driving voltage (in volts) at 10 mA/cm 2
- the external quantum efficiency (QE) is (number of photons emitted)/ It was obtained by (number of injected charge carriers)
- color coordinates (x) and color coordinates (y) are the x and y coordinates according to the CIE chromaticity diagram (Commission Internationale de L'Eclairage, 1931)
- CE/CIEy is the luminous efficiency (cd). /A) divided by the color coordinate (y) value.
- organic light-emitting devices using the polymer according to the present invention are different from organic light-emitting devices using the polymer not containing a third unit (Comparative Examples 3-1 to 3-6). It was confirmed that the efficiency (luminous efficiency, power efficiency, and external quantum efficiency) was improved while the driving voltage was lower or similar compared to 3-4).
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Abstract
Description
| 중합체 | a1:b1:c1:e1 (몰비) |
Mn | Mw | PDI | |
| 실시예 1-1 | 1 | 26.8:18.3:26.8:28.1 | 32,000 | 86,000 | 2.69 |
| 실시예 1-2 | 2 | 26.8:18.3:26.8:28.1 | 35,000 | 91,000 | 2.60 |
| 실시예 1-3 | 3 | 28.5:17.9:28.5:25.1 | 39,000 | 126,000 | 3.23 |
| 실시예 1-4 | 4 | 28.8:19.4:28.8:23 | 38,000 | 122,000 | 3.21 |
| 실시예 1-5 | 5 | 28.2:17.6:28.2:26 | 39,000 | 129,000 | 3.31 |
| 실시예 1-6 | 6 | 28.8:18.1:27.6:25.5 | 39,000 | 126,000 | 3.23 |
| 중합체 | a1:b1:e1 (몰비) |
Mn | Mw | PDI | |
| 비교예 1-1 | Q | 53.7 : 18.3 : 28 | 27,000 | 143,000 | 5.30 |
| 비교예 1-2 | X-1 | 52.8 : 18.4 : 28.8 | 32,000 | 100,000 | 3.13 |
| 비교예 1-3 | X-2 | 55.3 : 19.1 : 25.6 | 35,000 | 98,000 | 2.80 |
| 비교예 1-4 | X-3 | 54.1 : 18.8 : 27.1 | 39,000 | 111,000 | 2.85 |
| 정공 수송층 |
구동 전압 (V) |
발광 효율 (cd/A) |
전력 효율 (lm/W) |
외부 양자 효율 (QE) (%) |
휘도 (cd/m2) |
색좌표 (x) |
색좌표 (y) |
CE/CIEy | |
| 실시예 3-1 |
중합체 1 |
4.79 | 4.20 | 2.76 | 6.72 | 420.33 | 0.135 | 0.074 | 56.65 |
| 실시예 3-2 |
중합체 2 |
4.82 | 4.24 | 2.77 | 6.77 | 424.24 | 0.135 | 0.074 | 56.97 |
| 실시예 3-3 |
중합체 3 |
4.96 | 5.66 | 3.59 | 10.87 | 566.40 | 0.132 | 0.062 | 92.10 |
| 실시예 3-4 |
중합체 4 |
5.16 | 5.95 | 3.62 | 10.37 | 595.20 | 0.128 | 0.072 | 83.00 |
| 실시예 3-5 |
중합체 5 |
5.15 | 6.08 | 3.71 | 11.08 | 608.30 | 0.130 | 0.067 | 91.08 |
| 실시예 3-6 |
중합체 6 |
5.29 | 5.48 | 3.26 | 11.48 | 547.90 | 0.135 | 0.054 | 102.50 |
| 비교예 3-1 |
중합체 Q |
7.81 | 1.21 | 0.49 | 1.41 | 121.05 | 0.150 | 0.107 | 11.31 |
| 비교예 3-2 |
중합체 X-1 |
5.24 | 4.06 | 2.43 | 5.94 | 406.15 | 0.132 | 0.084 | 48.04 |
| 비교예 3-3 |
중합체 X-2 |
5.22 | 4.10 | 2.47 | 6.17 | 409.90 | 0.133 | 0.081 | 50.49 |
| 비교예 3-4 |
중합체 X-3 |
5.22 | 4.07 | 2.45 | 6.20 | 406.60 | 0.133 | 0.080 | 51.05 |
Claims (12)
- 하기 화학식 1로 표시되는 제1 단위;하기 화학식 2로 표시되는 제2 단위;상기 제1 단위와는 상이하고, 하기 화학식 4로 표시되는 제3 단위; 및하기 화학식 3으로 표시되는 말단기를 포함하는 중합체:[화학식 1][화학식 2][화학식 3][화학식 4]상기 화학식 1 내지 4에 있어서,Ar1 내지 Ar4는 서로 같거나 상이하고, 각각 독립적으로 치환 또는 비치환된 아릴렌기이고,L1 내지 L4는 서로 같거나 상이하고, 각각 독립적으로 직접결합; 또는 치환 또는 비치환된 아릴렌기이며,R1 내지 R6는 서로 같거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 헤테로고리기; 치환 또는 비치환된 아릴아민기; 또는 치환 또는 비치환된 실록산기이고,R11 내지 R16은 서로 같거나 상이하고, 각각 독립적으로 탄소수 1 내지 3의 알킬기이며,R21 및 R22는 서로 같거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 치환 또는 비치환된 알킬기; 또는 치환 또는 비치환된 아릴기이고,r1 내지 r6는 각각 1 내지 4의 정수이고, r1 내지 r6가 각각 2 이상일 경우, 각각의 괄호 안의 치환기는 서로 같거나 상이하며,l1 내지 l4는 각각 1 내지 5의 정수이고, l1 내지 l4가 각각 2 이상일 경우, 각각의 괄호 안의 구조는 서로 같거나 상이하며,m은 3 또는 4의 정수이고,m이 3일 경우, Z는 CRa; SiRa; N; 또는 3가의 치환 또는 비치환된 아릴기이고,m이 4일 경우, Z는 C; Si; 또는 4가의 치환 또는 비치환된 아릴기이며,Ra는 수소; 중수소; 치환 또는 비치환된 알킬기; 또는 치환 또는 비치환된 아릴기이고,Y는 직접결합; 치환 또는 비치환된 알킬렌기; 또는 치환 또는 비치환된 아릴렌기이며,Y가 직접결합; 또는 치환 또는 비치환된 알킬렌기일 경우, Z는 3가 또는 4가의 치환 또는 비치환된 아릴기이고,E는 수소; 중수소; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 아릴아민기; 치환 또는 비치환된 실록산기; 가교결합성기; 또는 이들의 조합이며,*은 중합체 내의 부착지점이다.
- 청구항 1에 있어서,상기 화학식 4는 하기 화학식 4-1인 것인 중합체:[화학식 4-1]상기 화학식 4-1에 있어서,R4 내지 R6, Ar3, Ar4, L3, L4, r4 내지 r6, l3 및 l4는 상기 화학식 4에서 정의한 것과 동일하고,R23 및 R24는 서로 같거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 실릴기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 헤테로고리기; 치환 또는 비치환된 아릴아민기; 또는 치환 또는 비치환된 실록산기이며,r23 및 r24는 각각 1 내지 5의 정수이고, r23 및 r24가 각각 2 이상일 경우, 각각의 괄호 안의 치환기는 서로 같거나 상이하다.
- 청구항 1에 있어서,상기 L1 및 L2는 서로 같거나 상이하고, 각각 독립적으로 치환 또는 비치환된 탄소수 6 내지 30의 아릴렌기인 것인 중합체.
- 청구항 1에 있어서,상기 화학식 2는 하기 화학식 2-1 내지 2-4 중 어느 하나인 것인 중합체:[화학식 2-1][화학식 2-2][화학식 2-3][화학식 2-4]상기 화학식 2-1 내지 2-4에 있어서,Z1은 CRa; SiRa; N; 또는 3가의 치환 또는 비치환된 아릴기이고,Z2 및 Z3는 서로 같거나 상이하고, 각각 독립적으로 C; Si; 또는 4가의 치환 또는 비치환된 아릴기이며,L10은 직접결합; 또는 치환 또는 비치환된 아릴렌기이고,Ra는 수소; 중수소; 치환 또는 비치환된 알킬기; 또는 치환 또는 비치환된 아릴기이고,R50 내지 R60은 서로 같거나 상이하고, 각각 독립적으로 수소; 중수소; 할로겐기; 시아노기; 알콕시기; 아릴옥시기; 실록산기; 치환 또는 비치환된 아민기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 헤테로고리기; 또는 가교결합성기이고, 인접한 기들이 서로 결합하여 고리를 형성할 수 있으며,r50 내지 r59는 각각 1 내지 4의 정수이고, r60은 1 내지 5의 정수이며, r50 내지 r60이 각각 2 이상일 경우, 각각의 괄호 안의 치환기는 서로 같거나 상이하고,*은 중합체 내의 부착지점이다.
- 청구항 1에 있어서,상기 E는 치환 또는 비치환된 알킬기; 치환 또는 비치환된 아릴기; 가교결합성기; 또는 이들의 조합인 것인 중합체.
- 청구항 1에 있어서,상기 E는 가교결합성기; 또는 하기 구조 중 어느 하나인 것인 중합체:상기 구조에 있어서,R70 내지 R72는 서로 같거나 상이하고, 각각 독립적으로 수소; 중수소; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 아릴기; 치환 또는 비치환된 헤테로고리기; 또는 가교결합성기이며,L70은 직접결합; 치환 또는 비치환된 알킬렌기; 또는 치환 또는 비치환된 아릴렌기이고,i1은 1 내지 10의 정수이고, i1이 2 이상일 경우, 2 이상의 L70은 서로 같거나 상이하고,n70 및 n72는 각각 1 내지 5의 정수이고, n71은 1 내지 4의 정수이며, n70 내지 n72가 각각 2 이상일 경우, 각각의 괄호 안의 치환기는 서로 같거나 상이하며,*은 중합체 내의 부착지점이다.
- 제1 전극;제2 전극; 및상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하고,상기 유기물층 중 1층 이상은 청구항 1 내지 10 중 어느 한 항에 따른 중합체를 포함하는 것인 유기 발광 소자.
- 청구항 11에 있어서,상기 중합체를 포함하는 유기물층은 정공주입층, 정공수송층 또는 정공주입과 정공수송을 동시에 하는 층인 것인 유기 발광 소자.
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| US18/698,883 US20250294961A1 (en) | 2022-06-10 | 2023-06-09 | Polymer and Organic Light-Emitting Device Using Same |
| JP2024518724A JP7849110B2 (ja) | 2022-06-10 | 2023-06-09 | 重合体およびこれを用いた有機発光素子 |
| CN202380013666.8A CN117980369A (zh) | 2022-06-10 | 2023-06-09 | 聚合物和使用其的有机发光器件 |
| EP23820134.7A EP4400526A4 (en) | 2022-06-10 | 2023-06-09 | Polymer and organic light-emitting device using same |
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| JP2009043896A (ja) * | 2007-08-08 | 2009-02-26 | Canon Inc | 有機発光素子及びディスプレイ |
| WO2009067419A1 (en) * | 2007-11-19 | 2009-05-28 | E. I. Du Pont De Nemours And Company | Electroactive materials |
| KR20160131947A (ko) * | 2015-05-06 | 2016-11-16 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 정공 수송 재료 |
| KR20200011153A (ko) * | 2018-07-24 | 2020-02-03 | 주식회사 엘지화학 | 중합체, 이를 포함하는 코팅 조성물, 이를 이용한 유기 발광 소자 및 이의 제조방법 |
| KR20220045781A (ko) * | 2020-10-06 | 2022-04-13 | 주식회사 엘지화학 | 중합체 및 이를 이용한 유기 발광 소자 |
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| AU2003230308A1 (en) | 2002-05-07 | 2003-11-11 | Lg Chem, Ltd. | New organic compounds for electroluminescence and organic electroluminescent devices using the same |
| TW201204687A (en) * | 2010-06-17 | 2012-02-01 | Du Pont | Electroactive materials |
| TW201200975A (en) * | 2010-06-17 | 2012-01-01 | Du Pont | Process and materials for making contained layers and devices made with same |
| CN105981192B (zh) * | 2013-12-13 | 2018-10-16 | E.I.内穆尔杜邦公司 | 形成电活性层的体系 |
| US9318715B2 (en) | 2014-05-21 | 2016-04-19 | E I Du Point De Nemours And Company | Hole transport composition without luminance quenching |
| JP2020107869A (ja) | 2018-12-28 | 2020-07-09 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 有機エレクトロルミネッセンス素子およびその製造方法 |
| JP2020105469A (ja) | 2018-12-28 | 2020-07-09 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 高分子化合物、ならびにこれを含む電荷輸送材料、組成物、有機層および有機エレクトロルミネッセンス素子 |
| JP7558612B2 (ja) | 2020-01-13 | 2024-10-01 | エルジー・ケム・リミテッド | 重合体およびこれを用いた有機発光素子 |
| US20230140039A1 (en) | 2020-03-27 | 2023-05-04 | Lg Chem, Ltd. | Novel Polymer and Organic Light Emitting Device Comprising Same |
| KR102489570B1 (ko) * | 2020-03-27 | 2023-01-17 | 주식회사 엘지화학 | 신규한 고분자 및 이를 이용한 유기 발광 소자 |
| KR102861650B1 (ko) * | 2020-06-10 | 2025-09-17 | 주식회사 엘지화학 | 신규한 고분자 및 이를 이용한 유기 발광 소자 |
| JP7682928B2 (ja) * | 2020-08-06 | 2025-05-26 | エルジー・ケム・リミテッド | 有機発光素子 |
| EP4145546B1 (en) * | 2020-08-06 | 2025-01-29 | Lg Chem, Ltd. | Organic light-emitting device |
| KR20220018219A (ko) * | 2020-08-06 | 2022-02-15 | 주식회사 엘지화학 | 중합체 및 이를 이용한 유기 발광 소자 |
| KR20220021264A (ko) * | 2020-08-13 | 2022-02-22 | 주식회사 엘지화학 | 유기 발광 소자 |
| EP4163315B1 (en) * | 2020-09-02 | 2025-04-23 | Lg Chem, Ltd. | Polymer, coating composition comprising same, and organic light-emitting element using same |
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2023
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- 2023-06-09 CN CN202380013666.8A patent/CN117980369A/zh active Pending
- 2023-06-09 EP EP23820134.7A patent/EP4400526A4/en active Pending
- 2023-06-09 WO PCT/KR2023/007945 patent/WO2023239199A1/ko not_active Ceased
- 2023-06-09 KR KR1020230074256A patent/KR102849821B1/ko active Active
- 2023-06-09 US US18/698,883 patent/US20250294961A1/en active Pending
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| JP2009043896A (ja) * | 2007-08-08 | 2009-02-26 | Canon Inc | 有機発光素子及びディスプレイ |
| WO2009067419A1 (en) * | 2007-11-19 | 2009-05-28 | E. I. Du Pont De Nemours And Company | Electroactive materials |
| KR20160131947A (ko) * | 2015-05-06 | 2016-11-16 | 이 아이 듀폰 디 네모아 앤드 캄파니 | 정공 수송 재료 |
| KR20200011153A (ko) * | 2018-07-24 | 2020-02-03 | 주식회사 엘지화학 | 중합체, 이를 포함하는 코팅 조성물, 이를 이용한 유기 발광 소자 및 이의 제조방법 |
| KR20220045781A (ko) * | 2020-10-06 | 2022-04-13 | 주식회사 엘지화학 | 중합체 및 이를 이용한 유기 발광 소자 |
| KR20220070659A (ko) | 2020-11-23 | 2022-05-31 | (주)와이엘산업 | 차단기용 스프링 조작장치 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4400526A4 (en) | 2025-05-07 |
| US20250294961A1 (en) | 2025-09-18 |
| KR20230170595A (ko) | 2023-12-19 |
| JP2025507477A (ja) | 2025-03-21 |
| CN117980369A (zh) | 2024-05-03 |
| JP7849110B2 (ja) | 2026-04-21 |
| KR102849821B1 (ko) | 2025-08-25 |
| EP4400526A1 (en) | 2024-07-17 |
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