WO2020009069A1 - 分子主鎖にターフェニル構造を含むトリアリールアミン高分子量化合物およびこれらの高分子量化合物を含む有機エレクトロルミネッセンス素子 - Google Patents
分子主鎖にターフェニル構造を含むトリアリールアミン高分子量化合物およびこれらの高分子量化合物を含む有機エレクトロルミネッセンス素子 Download PDFInfo
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Definitions
- the present invention relates to a high molecular weight compound suitable for an organic electroluminescence device (organic EL device), which is a self-luminous device suitable for various display devices, and the device.
- organic EL device organic electroluminescence device
- organic EL elements are self-luminous elements, they are brighter and have better visibility than liquid crystal elements, and can display sharp images. Therefore, active research has been made.
- the organic EL element has a configuration in which a thin film (organic layer) of an organic compound is sandwiched between an anode and a cathode.
- the method of forming a thin film is roughly classified into a vacuum deposition method and a coating method.
- the vacuum deposition method is a technique for forming a thin film on a substrate in a vacuum mainly using a low molecular compound, and is a technique which has already been put to practical use.
- the coating method is a method of forming a thin film on a substrate mainly by using a polymer compound and using a solution such as ink jet or printing, and has a high material use efficiency, suitable for large area and high definition. This is an indispensable technology for future large-area organic EL displays.
- the vacuum evaporation method using a low molecular weight material has extremely low material usage efficiency. If the substrate is enlarged, the deflection of the shadow mask becomes large, and uniform deposition on a large substrate becomes difficult. There is also a problem that the manufacturing cost is high.
- a polymer material can form a uniform film even on a large substrate by applying a solution of the polymer material dissolved in an organic solvent.
- a coating method can be used. Therefore, it is possible to increase the use efficiency of the material, and it is possible to significantly reduce the manufacturing cost for manufacturing the element.
- TFB fluorene polymer
- Patent Documents 6 and 7 a fluorene polymer called TFB has been known as a typical hole transport material that has been used in a high-molecular organic EL device.
- TFB has an insufficient hole transporting property and an insufficient electron blocking property, there is a problem that some of the electrons pass through the light emitting layer, and improvement in luminous efficiency cannot be expected.
- the life of the element cannot be expected to be prolonged due to low film adhesion to an adjacent layer.
- An object of the present invention is to provide a polymer material having excellent hole injection / transport performance, electron blocking ability, and high stability in a thin film state.
- An object of the present invention is to provide an organic EL device having an organic layer (thin film) formed of the above-described polymer material, having high luminous efficiency, and having a long life.
- the present inventors have focused on the fact that triarylamines having a terphenyl structure in the molecular main chain have high hole injection / transport capabilities and can be expected to have a wide gap, and include various terphenyl structural units.
- a high molecular weight compound with a novel structure that has a wide gap, excellent heat resistance and thin film stability in addition to hole injection / transport ability, and completed the present invention. I came to.
- the present invention comprises a triarylamine structural unit represented by the following general formula (1) and a linking structural unit represented by the following general formula (2), and is a repeating unit represented by the following general formula (3) High molecular weight compounds comprising units are provided.
- an organic EL device having a pair of electrodes and at least one organic layer interposed therebetween, comprising at least one organic layer containing the high molecular weight compound as a constituent material.
- An organic EL device is provided.
- the organic layer is a hole transport layer, an electron blocking layer, a hole injection layer, or a light emitting layer.
- the present invention is as follows.
- a repeating unit represented by the following general formula (3) comprising a triarylamine structural unit represented by the following general formula (1) and a linking structural unit represented by the following general formula (2)
- R 1 is independently a hydrogen atom, a deuterium atom, a cyano group, a nitro group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, an alkyl group or an alkyloxy group having 1 to 8 carbon atoms, A cycloalkyl group or cycloalkyloxy group having 10 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, or an aryloxy group; R 2 each independently represents an alkyl group or alkyloxy group having 1 to 8 carbon atoms, a cycloalkyl group or a cycloalkyloxy group having 5 to 10 carbon atoms, X represents a hydrogen atom, an amino group, a monovalent aryl group, or a monovalent heteroaryl group; L represents a divalent phenyl group, n represents an integer of 0 to 3, a represents an integer of 0 to 3, and b
- X is a diphenylamino group, a phenyl group, a naphthyl group, a dibenzofuranyl group, a dibenzothienyl group, a phenanthrenyl group, a fluorenyl group, a carbazolyl group, an indenocarbazolyl group, or an acridinyl group.
- the high molecular weight compound according to any one of [3].
- An organic electroluminescent device having a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the high molecular weight compound according to any one of [1] to [8] is used as a constituent material.
- An organic electroluminescence device having at least one organic layer.
- the high molecular weight compound of the present invention having the triarylamine structural unit (divalent group) represented by the general formula (1) and the linking structural unit (divalent group) represented by the general formula (2) is for example, a polymer having the structural unit as a repeating unit, preferably having a weight average molecular weight in terms of polystyrene measured by GPC (gel permeation chromatography) of 10,000 or more and less than 1,000,000. is there.
- Such high molecular weight compounds are (1) Good hole injection characteristics. (2) Hole mobility is high. (3) It has a wide gap and excellent electron blocking ability. (4) The thin film state is stable. (5) Excellent heat resistance. It has the characteristic of.
- An organic EL element in which an organic layer formed of such a high molecular weight compound, for example, a hole transport layer, an electron blocking layer, a hole injection layer, or a light emitting layer is formed between a pair of electrodes, (1) High luminous efficiency and power efficiency. (2) The practical driving voltage is low. (3) Long life. It has the advantage that.
- FIG. 2 is a view showing the chemical structures of structural units 1 to 11 suitable as a linking structural unit represented by the general formula (2) in the high molecular weight compound of the present invention.
- FIG. 3 is a view showing the chemical structures of structural units 22 to 31 suitable as the linking structural unit represented by the general formula (2) in the high molecular weight compound of the present invention.
- FIG. 2 is a diagram showing an example of a layer configuration of the organic EL element of the present invention.
- FIG. 2 is a diagram showing an example of a layer configuration of the organic EL element of the present invention.
- FIG. 1 is a 1 H-NMR chart of a high molecular weight compound (Compound A) of the present invention synthesized in Example 1.
- FIG. 2 is a 1 H-NMR chart of a high molecular weight compound (Compound B) of the present invention synthesized in Example 2.
- FIG. 4 is a 1 H-NMR chart of a high molecular weight compound (Compound C) of the present invention synthesized in Example 3.
- FIG. 1 is a 1 H-NMR chart of a high molecular weight compound (Compound A) of the present invention synthesized in Example 1.
- FIG. 2 is a 1 H-NMR chart of a high molecular weight compound (Compound B) of the present invention synthesized in Example 2.
- FIG. 4 is a 1 H
- FIG. 2 is a 1 H-NMR chart of a high molecular weight compound (Compound D) of the present invention synthesized in Example 4.
- FIG. 11 is a 1 H-NMR chart of a high molecular weight compound (Compound E) of the present invention synthesized in Example 5.
- FIG. 11 is a 1 H-NMR chart of a high molecular weight compound (Compound F) of the present invention synthesized in Example 6.
- Both the triarylamine structural unit and the linking structural unit of the high molecular weight compound of the present invention are divalent groups and are represented by the following general formulas (1) and (2), respectively.
- R 1 is each independently a hydrogen atom, a deuterium atom, a cyano group, a nitro group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a carbon number of 1 to 8; Or a cycloalkyl or cycloalkyloxy group having 5 to 10 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, or an aryloxy group.
- alkyl group (1-8 carbon atoms); Methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, isohexyl, neohexyl Xyl group, n-heptyl group, isoheptyl group, neoheptyl group, n-octyl group, isooctyl group, neooctyl group and the like.
- Alkyloxy group (1-8 carbon atoms); Methyloxy group, ethyloxy group, n-propyloxy group, isopropyloxy group, n-butyloxy group, tert-butyloxy group, n-pentyloxy group, n-hexyloxy group, n-heptyloxy group, n-octyloxy group etc.
- Cycloalkyl group (5 to 10 carbon atoms); Cyclopentyl, cyclohexyl, 1-adamantyl, 2-adamantyl and the like.
- Cycloalkyloxy group (5 to 10 carbon atoms); Cyclopentyloxy, cyclohexyloxy, cycloheptyloxy, cyclooctyloxy, 1-adamantyloxy, 2-adamantyloxy and the like.
- Alkenyl group (2-6 carbon atoms); Vinyl group, allyl group, isopropenyl group, 2-butenyl group and the like.
- R 1 is preferably a hydrogen atom or a deuterium atom, and most preferably a hydrogen atom in terms of synthesis.
- R 2 independently represents an alkyl group or an alkyloxy group having 1 to 8 carbon atoms, a cycloalkyl group or a cycloalkyloxy group having 5 to 10 carbon atoms.
- Examples of the above alkyl group, alkyloxy group, cycloalkyl group and cycloalkyloxy group in R 2 include the same groups as those described for R 1 .
- R 2 is preferably an alkyl group of 1 to 8 carbon atoms, and is preferably an n-hexyl group or an n-octyl group in order to enhance solubility. Most preferred.
- a represents an integer of 0 to 3
- b represents an integer of 0 to 4.
- X represents a hydrogen atom, an amino group, a monovalent aryl group, or a monovalent heteroaryl group.
- examples of the monovalent aryl group and the monovalent heteroaryl group include the following groups.
- An aryl group Phenyl, naphthyl, anthracenyl, phenanthrenyl, fluorenyl, indenyl, pyrenyl, perylenyl, fluoranthenyl and the like.
- a heteroaryl group Pyridyl, pyrimidinyl, triazinyl, furyl, pyrrolyl, thienyl, quinolyl, isoquinolyl, benzofuranyl, benzothienyl, indolyl, carbazolyl, indenocarbazolyl, benzoxazolyl, Benzothiazolyl group, quinoxalinyl group, benzimidazolyl group, pyrazolyl group, dibenzofuranyl group, dibenzothienyl group, naphthyridinyl group, phenanthrolinyl group, acridinyl group, carbolinyl group and the like.
- the above amino group, aryl group and heteroaryl group may have a substituent.
- substituents include the following groups in addition to a deuterium atom, a cyano group, a nitro group, and the like.
- a halogen atom for example, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom;
- Alkyl groups especially those having 1 to 8 carbon atoms, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, Neopentyl, n-hexyl, isohexyl, neohexyl, n-heptyl, isoheptyl, neoheptyl, n-octyl, isooctyl, neoocty
- substituents may further have the substituents exemplified above. Further, these substituents are preferably present independently of each other, but these substituents are connected via a single bond, a methylene group which may have a substituent, an oxygen atom or a sulfur atom. And may combine with each other to form a ring.
- the above aryl group or heteroaryl group may have a phenyl group as a substituent, and this phenyl group may further have a phenyl group as a substituent. That is, taking an aryl group as an example, the aryl group may be a biphenylyl group, a terphenylyl group, or a triphenylenyl group.
- L represents a divalent phenyl group
- n represents an integer of 0 to 3.
- the above L may have a substituent.
- substituents include the same groups as the above-mentioned substituents that X may have, and these substituents may further have a substituent.
- the present invention includes a triarylamine structural unit represented by the general formula (1) and a linking structural unit represented by the general formula (2).
- the molecular weight compound has excellent properties such as hole injection properties, hole mobility, electron blocking ability, thin film stability, and heat resistance.
- the weight average molecular weight in terms of polystyrene measured by GPC is preferably 10,000 or more and less than 1,000,000, more preferably 10,000 or more and less than 500,000. And more preferably in the range of 10,000 or more and less than 200,000.
- the high molecular weight compound of the present invention may have other structural units in order to ensure, for example, coating properties when applied to the formation of an organic layer in an organic EL device by coating, adhesion to other layers, and durability. Is preferred.
- Such other structural units include, for example, thermally crosslinkable structural units and triarylamine structural units different from the general formula (1).
- thermo-crosslinkable structural unit is a structural unit having a reactive functional group such as a vinyl group or a cyclobutane ring in the structural unit, and specific examples thereof are shown in FIGS. 4 to 5 by the formulas (4a) to (4z). Was. These are preferred specific examples of the thermally crosslinkable structural unit, but the thermally crosslinkable structural unit used in the present invention is not limited to these structural units.
- the structural unit represented by the general formula (1) is A
- the linking structural unit represented by the general formula (2) is B
- the thermally crosslinkable structural unit or the general formula (1) When a different triarylamine structural unit is represented by C, it is preferable that the structural unit A contains 1 mol% or more, particularly 20 mol% or more, provided that the structural unit A is contained in such an amount. And preferably contains structural unit B in an amount of 1 mol% or more, particularly 30 to 70 mol%, and more preferably contains structural unit C in an amount of 1 mol% or more, particularly 5 to 20 mol%.
- a terpolymer containing structural units A, B and C so as to satisfy such conditions is most preferable for forming an organic layer of an organic EL device.
- Such a high molecular weight compound of the present invention is synthesized by forming a CC bond or a CN bond by a Suzuki polymerization reaction or a HARTWIG-BUCHWALD polymerization reaction to link the respective structural units.
- a high molecular weight compound of the present invention is prepared by preparing a unit compound having each structural unit, appropriately borating or halogenating the unit compound, and performing a polycondensation reaction using an appropriate catalyst. Can be synthesized.
- a triarylamine derivative represented by the following general formula (1a) can be used as the compound for introducing the structural unit of the general formula (1).
- Q is a hydrogen atom, a halogen atom or a borate group
- R 1 , R 2 , and L are the same as those represented by the general formula (1).
- those in which Q is a hydrogen atom are unit compounds for introducing the structural unit of the general formula (1), and those in which Q is a halogen atom or a borate group.
- Q is a hydrogen atom
- Q is a halogen atom or a borate group.
- halides or borate esters used to synthesize polymers are halides or borate esters used to synthesize polymers.
- the halogen atom is preferably Br.
- Such a high molecular weight compound can be synthesized by a polycondensation reaction between a boric acid ester and a halogenated compound, and the intermediate for introducing the structural units A and C is a boric acid ester.
- the intermediate for introducing the structural unit B is a halide, or the intermediate for introducing the structural unit A and the structural unit C is a halide, and
- the intermediate for introducing the structural unit B needs to be a borate ester. That is, the molar ratio between the halide and the borate must be equal.
- the high molecular weight compound of the present invention described above is dissolved in an aromatic organic solvent such as benzene, toluene, xylene, and anisole to prepare a coating solution, and the coating solution is coated on a predetermined substrate and dried by heating.
- an aromatic organic solvent such as benzene, toluene, xylene, and anisole
- Such a thin film has good heat resistance and also good adhesion with other layers.
- the above high molecular weight compound can be used as a constituent material of a hole injection layer and / or a hole transport layer of an organic EL device.
- the hole injecting layer or hole transporting layer formed of such a high molecular weight compound has a higher hole injecting property, higher mobility, and higher electron blocking property than those formed of conventional materials.
- the exciton generated in the light-emitting layer can be confined, the probability of recombination of holes and electrons can be improved, high luminous efficiency can be obtained, and the driving voltage can be reduced to reduce the organic EL.
- the advantage that the durability of the element is improved can be realized.
- the high molecular weight compound of the present invention having the above-described electrical properties has a wider gap than conventional materials and is effective in confining excitons, so that it is naturally suitably used for an electron blocking layer and a light emitting layer. can do.
- An organic EL device including an organic layer formed using the above-described high molecular weight compound of the present invention has, for example, a structure shown in FIG. That is, a transparent anode 2, a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, an electron transport layer 6, and a cathode 7 are formed on a glass substrate 1 (which may be a transparent substrate such as a transparent resin substrate). Is provided.
- the organic EL device to which the high molecular weight compound of the present invention is applied is not limited to the above layer structure, and a hole blocking layer can be provided between the light emitting layer 5 and the electron transport layer 6. 7, an electron blocking layer or the like can be provided between the hole transporting layer 11 and the light emitting layer 13, and further, between the cathode 7 and the electron transporting layer 6, as shown in FIG. An electron injection layer can also be provided. In addition, some layers can be omitted. For example, a simple layer structure in which an anode 2, a hole transport layer 4, a light emitting layer 5, an electron transport layer 6, and a cathode 7 are provided on a substrate 1 can be employed. It is also possible to have a two-layer structure in which layers having the same function are stacked.
- the high molecular weight compound of the present invention takes advantage of its properties such as hole injecting property and hole transporting property to make use of the organic layer (for example, the hole injecting layer 3, the positive hole injecting layer 3) provided between the anode 2 and the cathode 7. It is suitably used as a material for forming the hole transport layer 4, the light emitting layer 5, or the electron blocking layer.
- the transparent anode 2 may be formed of an electrode material known per se, and an electrode material having a large work function such as ITO or gold is placed on the substrate 1 (a transparent substrate such as a glass substrate). It is formed by vapor deposition.
- the hole injection layer 3 provided on the transparent anode 2 is formed by using a coating solution in which the high molecular weight compound of the present invention is dissolved in an aromatic organic solvent such as toluene, xylene, and anisole. be able to. That is, the hole injection layer 3 can be formed by coating the coating solution on the transparent anode 2 by spin coating, inkjet, or the like.
- the above-described hole injection layer 3 does not use the high molecular weight compound of the present invention, and a conventionally known material, for example, It can also be formed using the above material.
- PEDOT poly (3,4-ethylenedioxythiophene)
- PSS poly (styrenesulfonate)
- a layer (thin film) using such a material can be performed by vapor deposition, spin coating, ink-jet coating, or the like. The same applies to other layers, and film formation is performed by a vapor deposition method or a coating method according to the type of a film forming material.
- the hole transport layer 4 provided on the hole injection layer 3 is also formed by spin coating using the high molecular weight compound of the present invention or coating by inkjet or the like. Can be.
- the hole transport layer 4 can be formed using a conventionally known hole transport material.
- a hole transport material are as follows.
- Benzidine derivatives for example, N, N'-diphenyl-N, N'-di (m-tolyl) benzidine (hereinafter abbreviated as TPD); N, N'-diphenyl-N, N'-di ( ⁇ -naphthyl) benzidine (hereinafter abbreviated as NPD); N, N, N ', N'-tetrabiphenylylbenzidine;
- Amine derivatives for example, 1,1-bis [4- (di-4-tolylamino) phenyl] cyclohexane (hereinafter abbreviated as TAPC); Various triphenylamine trimers and tetramers; Coating type polymer material used also for the hole injection layer.
- the above-described compounds of the hole transport layer including the high molecular weight compound of the present invention, may be formed alone or in combination of two or more. Alternatively, a plurality of layers may be formed using one or more kinds of the above compounds, and a multilayer film in which such layers are stacked can be used as a hole transport layer.
- a layer serving as both the hole injection layer 3 and the hole transport layer 4 can be used.
- the hole injection / transport layer can be formed by coating using a polymer material such as PEDOT.
- the hole transporting layer 4 (similarly for the hole injecting layer 3), trisbromophenylamine hexachloroantimony and a radialene derivative (for example, refer to WO2014 / 009310) and the like are further added to the materials usually used for the layer. P-doped one can be used. Further, the hole transport layer 4 (or the hole injection layer 3) can be formed using a polymer compound having a TPD basic skeleton.
- an electron blocking layer (which can be provided between the hole transport layer 11 and the light emitting layer 13 as shown in FIG. 7) is formed by spin coating or inkjet coating using the high molecular weight compound of the present invention. can do.
- an organic EL device having an organic layer formed by using the high molecular weight compound of the present invention a known electron-blocking compound having an electron-blocking action, for example, a carbazole derivative or a compound having a triphenylsilyl group, and
- the electron blocking layer can also be formed using a compound having a triarylamine structure.
- Specific examples of the carbazole derivative and the compound having a triarylamine structure are as follows.
- carbazole derivatives 4,4 ′, 4 ′′ -tri (N-carbazolyl) triphenylamine hereinafter abbreviated as TCTA
- 1,3-bis (carbazol-9-yl) benzene hereinafter abbreviated as mCP
- 2,2-bis (4-carbazol-9-ylphenyl) adamantane hereinafter abbreviated as Ad-Cz
- compounds having a triarylamine structure 9- [4- (carbazol-9-yl) phenyl] -9- [4- (triphenylsilyl) phenyl] -9H-fluorene
- the electron blocking layer may also be formed independently, including the high molecular weight compound of the present invention, or may be formed by mixing two or more kinds. Alternatively, a plurality of layers may be formed using one or more of the above compounds, and a multilayer film in which such layers are stacked can be used as an electron blocking layer.
- the light emitting layer 5 is made of a metal complex of a quinolinol derivative such as Alq 3 or various kinds of metals such as zinc, beryllium, and aluminum. It can be formed using a light-emitting material such as a metal complex, an anthracene derivative, a bisstyrylbenzene derivative, a pyrene derivative, an oxazole derivative, or a polyparaphenylenevinylene derivative.
- the light emitting layer 5 may be composed of a host material and a dopant material.
- a host material in addition to the above-described light emitting material, a thiazole derivative, a benzimidazole derivative, a polydialkylfluorene derivative, or the like can be used, and further, the above-described high molecular weight compound of the present invention can be used.
- the dopant material quinacridone, coumarin, rubrene, perylene and derivatives thereof, benzopyran derivatives, rhodamine derivatives, aminostyryl derivatives, and the like can be used.
- the light emitting layer 5 may have a single layer structure using one or two or more light emitting materials, or may have a multilayer structure in which a plurality of layers are stacked.
- the light emitting layer 5 can be formed using a phosphorescent light emitting material as the light emitting material.
- a phosphorescent material a phosphorescent material of a metal complex such as iridium or platinum can be used.
- a green phosphorescent substance such as Ir (ppy) 3
- a blue phosphorescent substance such as FIrpic and FIr6
- a red phosphorescent substance such as Btp 2 Ir (acac)
- the material is used by doping a hole injection / transport host material or an electron transport host material.
- the phosphorescent light emitting material is preferably doped into the host material by co-evaporation in the range of 1 to 30% by weight based on the entire light emitting layer in order to avoid concentration quenching.
- a material that emits delayed fluorescence such as a CDCB derivative such as PIC-TRZ, CC2TA, PXZ-TRZ, or 4CzIPN can be used as the light-emitting material.
- a CDCB derivative such as PIC-TRZ, CC2TA, PXZ-TRZ, or 4CzIPN
- the driving voltage is reduced, and the luminous efficiency is reduced.
- An improved organic EL device can be realized.
- the high molecular weight compound of the present invention can be used as a host material having a hole injecting / transporting property.
- carbazole derivatives such as 4,4'-di (N-carbazolyl) biphenyl (hereinafter abbreviated as CBP), TCTA, and mCP can also be used.
- p-bis (triphenylsilyl) benzene (hereinafter abbreviated as UGH2) is used as a host material having an electron transporting property.
- TPBI 1,3,5-phenylene
- the hole blocking layer (not shown) provided between the light emitting layer 5 and the electron transport layer 6 includes: It can be formed using a compound having a hole blocking effect known per se.
- known compounds having such a hole blocking effect include the following.
- Phenanthroline derivatives such as bathocuproin (hereinafter abbreviated as BCP); Metal complexes of quinolinol derivatives such as aluminum (III) bis (2-methyl-8-quinolinate) -4-phenylphenolate (hereinafter abbreviated as BAlq); Various rare earth complexes; Triazole derivatives; Triazine derivatives; Oxadiazole derivatives and the like.
- These materials can be used for forming the electron transport layer 6 described below, and can also be used as the hole blocking layer and the electron transport layer 6.
- Such a hole blocking layer can also have a single layer or a multilayer structure, and each layer is formed using one or more of the above-described compounds having a hole blocking action.
- the electron transport layer 6 is formed of a known electron transport compound such as a quinolinol derivative such as Alq 3 or BAlq.
- a quinolinol derivative such as Alq 3 or BAlq.
- pyridine derivatives pyrimidine derivatives
- triazole derivatives triazine derivatives
- oxadiazole derivatives thiadiazole derivatives
- carbodiimide derivatives quinoxaline derivatives
- phenanthroline derivatives silole derivatives, benzimidazole derivatives, etc. Is done.
- the electron transport layer 6 can also have a single-layer or multi-layer structure, and each layer is formed using one or more of the above-described electron transport compounds.
- an electron injection layer (not shown in the figure) provided as necessary may be a known one, for example, And alkali metal salts such as lithium fluoride and cesium fluoride; alkaline earth metal salts such as magnesium fluoride; metal oxides such as aluminum oxide; and organic metal complexes such as lithium quinoline.
- alkali metal salts such as lithium fluoride and cesium fluoride
- alkaline earth metal salts such as magnesium fluoride
- metal oxides such as aluminum oxide
- organic metal complexes such as lithium quinoline.
- an electrode material having a low work function such as aluminum, a magnesium silver alloy, a magnesium indium alloy, and an aluminum magnesium alloy are used. Such an alloy having a lower work function is used as an electrode material.
- the high molecular weight compound of the present invention to form at least one of a hole injection layer, a hole transport layer, a light emitting layer, and an electron blocking layer, the luminous efficiency and power
- An organic EL device having high efficiency, low practical driving voltage, low emission start voltage, and extremely excellent durability can be obtained.
- this organic EL element while having high luminous efficiency, the driving voltage is reduced, the current resistance is improved, and the maximum light emission luminance is improved.
- structural unit A the structural unit of the high molecular weight compound of the present invention represented by the general formula (1)
- structural unit B the linked structural unit represented by the general formula (2)
- structural unit C The thermally crosslinkable structural unit
- structural unit D The triarylamine structural unit different from the general formula (1)
- Example 1 (Synthesis of high molecular weight compound A) The following components were added to a reaction vessel purged with nitrogen, and nitrogen gas was passed through for 30 minutes.
- Intermediate 1 5.0 g 1,3-dibromobenzene: 1.8 g
- Intermediate 2 0.8 g Tripotassium phosphate: 6.9 g
- the average molecular weight and the degree of dispersion of the polymer compound A measured by GPC were as follows. Number average molecular weight Mn (in terms of polystyrene): 32,000 Weight average molecular weight Mw (polystyrene conversion): 55,000 Dispersity (Mw / Mn): 1.7
- FIG. 8 shows the 1 H-NMR measurement results.
- the chemical composition formula was as follows.
- the polymer compound A contains 40 mol% of the structural unit A represented by the general formula (1) and 50 mol% of the structural unit B represented by the general formula (2). %, And 10% by mole of the thermally crosslinkable structural unit C.
- the average molecular weight and the degree of dispersion of the polymer compound B measured by GPC were as follows. Number average molecular weight Mn (in terms of polystyrene): 32,000 Weight average molecular weight Mw (polystyrene conversion): 57,000 Dispersion degree (Mw / Mn): 1.8
- FIG. 9 shows the 1 H-NMR measurement results.
- the chemical composition formula was as follows.
- this polymer compound B contains 40 mol% of the structural unit A represented by the general formula (1) and 50 mol% of the structural unit B represented by the general formula (2). And contained the thermally crosslinkable structural unit C in an amount of 10 mol%.
- the organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure to obtain a crude polymer.
- the crude polymer was dissolved in toluene, silica gel was added for adsorption purification, and the silica gel was removed by filtration.
- the obtained filtrate was concentrated under reduced pressure, and 80 ml of toluene was added to and dissolved in the dried product, which was dropped into 240 ml of n-hexane, and the obtained precipitate was collected by filtration. This operation was repeated three times and dried to obtain 3.0 g of a high molecular weight compound C (yield: 80%).
- the average molecular weight and the degree of dispersion of the polymer compound C measured by GPC were as follows. Number average molecular weight Mn (polystyrene conversion): 35,000 Weight average molecular weight Mw (polystyrene conversion): 69000 Dispersion degree (Mw / Mn): 2.0
- FIG. 10 shows the 1 H-NMR measurement results.
- the chemical composition formula was as follows.
- this polymer compound C contains 40 mol% of the structural unit A represented by the general formula (1) and 50 mol% of the structural unit B represented by the general formula (2). And contained the thermally crosslinkable structural unit C in an amount of 10 mol%.
- the average molecular weight and the degree of dispersion of the polymer compound D measured by GPC were as follows. Number average molecular weight Mn (polystyrene conversion): 44,000 Weight average molecular weight Mw (polystyrene conversion): 71,000 Dispersion degree (Mw / Mn): 1.6
- FIG. 11 shows the 1 H-NMR measurement results.
- the chemical composition formula was as follows.
- the polymer compound D contains 40 mol% of the structural unit A represented by the general formula (1) and 50 mol% of the structural unit B represented by the general formula (2). And contained the thermally crosslinkable structural unit C in an amount of 10 mol%.
- the average molecular weight and the degree of dispersion of the polymer compound E measured by GPC were as follows. Number average molecular weight Mn (in terms of polystyrene): 55,000 Weight average molecular weight Mw (in terms of polystyrene): 93,000 Dispersity (Mw / Mn): 1.7
- FIG. 12 shows the 1 H-NMR measurement results.
- the chemical composition formula was as follows.
- this polymer compound E contains 40 mol% of the structural unit A represented by the general formula (1) and 50 mol% of the structural unit B represented by the general formula (2). And contained the thermally crosslinkable structural unit C in an amount of 10 mol%.
- the average molecular weight and the degree of dispersion of the polymer compound F measured by GPC were as follows. Number average molecular weight Mn (in terms of polystyrene): 32,000 Weight average molecular weight Mw (polystyrene conversion): 54,000 Dispersity (Mw / Mn): 1.7
- FIG. 13 shows the 1 H-NMR measurement results.
- the chemical composition formula was as follows.
- the polymer compound F contains 40 mol% of the structural unit A represented by the general formula (1) and 50 mol% of the structural unit B represented by the general formula (2). And a triarylamine structural unit D different from the general formula (1) in an amount of 10 mol%.
- Example 7 (Measurement of work function) Using the high molecular weight compounds A to F synthesized in Examples 1 to 6, a coating film having a thickness of 80 nm was formed on an ITO substrate, and an ionization potential measuring device (PYS-, manufactured by Sumitomo Heavy Industries, Ltd.) 202 type). The results were as follows.
- the high molecular weight compounds A to F of the present invention exhibit a favorable energy level as compared with the work function of a general hole transporting material such as NPD and TPD of 5.4 eV, and have a good hole transporting property. It turns out that he has the ability.
- Example 8> (Production and evaluation of organic EL device) An organic EL device having a layer structure shown in FIG. 6 was produced by the following method.
- the glass substrate 1 on which a 50 nm-thick ITO film was formed was washed with an organic solvent, and then the ITO surface was washed by UV / ozone treatment.
- PEDOT / PSS manufactured by Heraeus
- PEDOT / PSS is formed into a film with a thickness of 50 nm by spin coating so as to cover the transparent anode 2 (ITO) provided on the glass substrate 1 and dried on a hot plate at 200 ° C. for 10 minutes.
- a hole injection layer 3 was formed.
- Example 2 The high molecular weight compound A obtained in Example 1 was dissolved in toluene at 0.6% by weight to prepare a coating solution.
- the substrate on which the hole injection layer 3 is formed as described above is transferred into a glove box replaced with dry nitrogen, and 25 nm is spin-coated on the hole injection layer 3 using the above-mentioned coating solution.
- the substrate on which the hole transport layer 4 was formed as described above was mounted in a vacuum evaporation machine, and the pressure was reduced to 0.001 Pa or less.
- the light emitting layer 5 having a thickness of 34 nm was formed on the hole transport layer 4 by binary vapor deposition of a blue light emitting material (EMD-1) having the following structural formula and a host material (EMH-1).
- EMD-1 blue light emitting material
- EMH-1 4: 96.
- a 20 nm-thick electron transport layer 6 was formed by binary vapor deposition using the above-described electron transport materials ETM-1 and ETM-2.
- the glass substrate on which the transparent anode 2, the hole injection layer 3, the hole transport layer 4, the light emitting layer 5, the electron transport layer 6, and the cathode 7 are formed is placed in a glove box in which dry nitrogen is substituted.
- the substrate was moved, and another glass substrate for sealing was bonded using a UV curable resin to obtain an organic EL element.
- the characteristics of the produced organic EL device were measured at room temperature in the air.
- emission characteristics when a DC voltage was applied to the manufactured organic EL element were measured. The above measurement results are shown in Table 2.
- Example 9 A hole transport layer 4 was formed using a coating solution prepared by dissolving the compound of Example 2 (high molecular weight compound B) in toluene at 0.6% by weight in place of the high molecular weight compound A.
- An organic EL device was produced in exactly the same manner as in Example 8. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 2 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the manufactured organic EL element.
- Example 10 A hole transport layer 4 was formed using a coating solution prepared by dissolving the compound of Example 3 (high molecular weight compound C) in toluene at 0.6% by weight in place of the high molecular weight compound A.
- An organic EL device was produced in exactly the same manner as in Example 8. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 2 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the manufactured organic EL element.
- Example 11 A hole transport layer 4 was formed using a coating solution prepared by dissolving the compound of Example 4 (high molecular weight compound D) in toluene at 0.6% by weight instead of the high molecular weight compound A.
- An organic EL device was produced in exactly the same manner as in Example 8. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 2 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the manufactured organic EL element.
- Example 12 A hole transport layer 4 was formed using a coating solution prepared by dissolving the compound of Example 5 (high molecular weight compound E) in toluene at 0.6% by weight in place of the high molecular weight compound A.
- An organic EL device was produced in exactly the same manner as in Example 8. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 2 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the manufactured organic EL element.
- Example 13 A hole transport layer 4 was formed using a coating solution prepared by dissolving the compound of Example 6 (high molecular weight compound F) in toluene at 0.6% by weight in place of the high molecular weight compound A.
- An organic EL device was produced in exactly the same manner as in Example 8. The characteristics of the produced organic EL device were measured at room temperature in the air. Table 2 summarizes the measurement results of the light emission characteristics when a DC voltage was applied to the manufactured organic EL element.
- Example 1 was repeated except that the hole transport layer 4 was formed using a coating solution prepared by dissolving the following TFB (hole transporting polymer) in toluene at 0.6% by weight in place of the high molecular weight compound A. In the same manner as in Example 8, an organic EL device was produced.
- TFB hole transporting polymer
- TFB hole transporting polymer
- 4,4 ′-(N- (4-sec-butylphenyl)) diphenylamine Hole Transport Polymer ADS259BE, manufactured by American Dye Source Co.
- the device life was 560 cd / m 2 (constant initial luminance of 100%) when the device was driven at a constant current with the luminance at the start of light emission (initial luminance) being 700 cd / m 2. (Corresponding to 80% at the time of performing: 80% attenuation).
- the luminous efficiency when a current having a current density of 10 mA / cm 2 was passed was 5.53 cd / A of the organic EL element of Comparative Example 1 and 9 for the organic EL element of Example 8. 0.03 cd / A, 7.37 cd / A for the organic EL device of Example 9, 9.58 cd / A for the organic EL device of Example 10, 7.01 cd / A for the organic EL device of Example 11, and Example 12.
- the efficiency was 7.80 cd / A
- the efficiency was 8.82 cd / A.
- the organic EL element of Example 8 was 190 hours
- the organic EL element of Example 9 was 115 hours
- the organic EL element of Comparative Example 1 was 7 hours.
- the organic EL devices of Example 10 had a long life of 83 hours
- the organic EL device of Example 11 had 409 hours
- the organic EL device of Example 12 had 264 hours
- the organic EL device of Example 13 had a long life of 29 hours.
- Example 14 An organic EL device having a layer structure shown in FIG. 7 was manufactured by the following method.
- the glass substrate 8 on which a 50 nm-thick ITO film was formed was washed with an organic solvent, and then the ITO surface was washed by UV / ozone treatment.
- PEDOT / PSS manufactured by Heraeus
- PEDOT / PSS is formed to a thickness of 50 nm by spin coating so as to cover the transparent anode 9 (ITO) provided on the glass substrate 8, and dried on a hot plate at 200 ° C. for 10 minutes.
- a hole injection layer 10 was formed.
- a coating solution was prepared by dissolving 0.6% by weight of a high molecular weight compound HTM-1 having the following structural formula in toluene.
- the substrate on which the hole injection layer 10 is formed as described above is transferred into a glove box replaced with dry nitrogen, and the hole injection layer 10 is spin-coated on the hole injection layer 10 using the above-mentioned coating solution to a thickness of 25 nm.
- Example 2 The high molecular weight compound A obtained in Example 1 was dissolved in toluene at 0.6% by weight to prepare a coating solution. A coating layer having a thickness of 15 nm was formed on the hole transport layer 11 by spin coating using the above coating solution, and further dried on a hot plate at 200 ° C. for 10 minutes to form an electron blocking layer 12. .
- the substrate on which the electron blocking layer 12 was formed as described above was mounted in a vacuum evaporation machine, and the pressure was reduced to 0.001 Pa or less.
- a light emitting layer 13 having a thickness of 34 nm was formed by binary vapor deposition of a blue light emitting material (EMD-1) and a host material (EMH-1).
- EMD-1 blue light emitting material
- EMH-1 host material
- a 20 nm-thick electron transport layer 14 was formed by dual vapor deposition using the electron transport materials ETM-1 and ETM-2.
- the cathode 15 aluminum was deposited to a thickness of 100 nm to form the cathode 15.
- the glass substrate on which the transparent anode 9, the hole injection layer 10, the hole transport layer 11, the electron blocking layer 12, the light emitting layer 13, the electron transport layer 14, and the cathode 15 are formed is replaced with dry nitrogen.
- the glass substrate was moved into the glove box, and another glass substrate for sealing was bonded using a UV-curable resin to obtain an organic EL device.
- the characteristics of the produced organic EL device were measured at room temperature in the air.
- emission characteristics when a DC voltage was applied to the manufactured organic EL element were measured. The measurement results are shown in Table 3.
- the glass substrate 1 on which a 50 nm-thick ITO film was formed was washed with an organic solvent, and then the ITO surface was washed by UV / ozone treatment.
- PEDOT / PSS manufactured by Heraeus
- PEDOT / PSS is formed into a film with a thickness of 50 nm by spin coating so as to cover the transparent anode 2 (ITO) provided on the glass substrate 1 and dried on a hot plate at 200 ° C. for 10 minutes.
- a hole injection layer 3 was formed.
- a coating solution was prepared by dissolving the high molecular weight compound HTM-1 in toluene at 0.6% by weight.
- the substrate on which the hole injection layer 3 is formed as described above is transferred into a glove box replaced with dry nitrogen, and 25 nm is spin-coated on the hole injection layer 3 using the above-mentioned coating solution.
- the substrate on which the hole transport layer 4 was formed as described above was mounted in a vacuum evaporation machine, and the pressure was reduced to 0.001 Pa or less.
- the glass substrate on which the transparent anode 2, the hole injection layer 3, the hole transport layer 4, the light emitting layer 5, the electron transport layer 6, and the cathode 7 are formed is placed in a glove box in which dry nitrogen is substituted.
- the substrate was moved, and another glass substrate for sealing was bonded using a UV curable resin to obtain an organic EL element.
- the characteristics of the produced organic EL device were measured at room temperature in the air.
- emission characteristics when a DC voltage was applied to the manufactured organic EL element were measured. The measurement results are shown in Table 3.
- the device lifetime was 630 cd / m 2 (initial brightness was 100%) when the device was driven at a constant current with the emission brightness (initial brightness) at the start of light emission set to 700 cd / m 2. (Corresponding to 90% at the time of performing: 90% decay).
- the luminous efficiency when a current having a current density of 10 mA / cm 2 was passed was 8.26 cd / A of the organic EL element of Comparative Example 2 and 9 for the organic EL element of Example 14.
- the efficiency was as high as .29 cd / A.
- the organic EL element of Example 14 had a long life of 153 hours, compared to 55 hours of the organic EL element of Comparative Example 2.
- the organic EL device including the organic layer formed by using the high molecular weight compound of the present invention can realize an organic EL device having higher luminous efficiency and longer life than conventional organic EL devices. I understood.
- Example 15> (Measurement and evaluation of residual film ratio) A thin film was formed on a glass substrate by spin coating using a solution of the high molecular weight compound A synthesized in Example 1 dissolved in 0.6% by weight in toluene. The obtained film was transferred into a glove box replaced with dry nitrogen, and baked on a hot plate at 200 ° C. for 60 minutes or at 230 ° C. for 10 minutes. After cooling the baked film to room temperature, the absorption intensity for light having a wavelength of 300 to 700 nm was measured using a spectrophotometer (U-3000: manufactured by Hitachi, Ltd.). Further, the film whose absorption intensity was measured was subjected to toluene rinsing at 2,000 rpm for 15 seconds using a spin coater. The absorption intensity of the rinsed film was measured using a spectrophotometer.
- Remaining film ratio (%) ( ⁇ / ⁇ ) ⁇ 100 Where: ⁇ is the absorption intensity after rinsing (peak top), ⁇ is the absorption intensity (peak top) before rinsing.
- Example 17 The remaining film ratio was calculated in the same manner as in Example 15 except that the high molecular weight compound A was changed to the high molecular weight compound C synthesized in Example 3, and the results are shown in Table 4.
- Example 18 The remaining film ratio was calculated in the same manner as in Example 15 except that the high molecular weight compound A was changed to the high molecular weight compound D synthesized in Example 4, and the results are shown in Table 4.
- Example 19 The remaining film ratio was calculated in the same manner as in Example 15 except that the high molecular weight compound A was changed to the high molecular weight compound E synthesized in Example 5, and the results are shown in Table 4.
- the high molecular weight compound A was 96.3% in a 200 ° C./60 minute bake, 100% in a 230 ° C./10 minute bake, and the high molecular weight compound B was 90% in a 200 ° C./60 minute bake.
- the high molecular weight compound of the present invention was found to have high curability (thermal crosslinkability) from the fact that the film had a residual film ratio.
- the high molecular weight compound of the present invention has a high hole transporting ability, an excellent electron blocking ability, and a good thermal crosslinking property, and thus is excellent as a compound for a coating type organic EL device.
- a coating-type organic EL device using the compound, high luminous efficiency and power efficiency can be obtained and durability can be improved. This has made it possible to develop a wide range of applications such as home appliances and lighting.
- Electron blocking layer 1, 8, a glass substrate 2, 9, a transparent anode 3, 10, a hole injection layer 4, 11, a hole transport layer 5, 13, a light emitting layer 6, 14, ..Electron transport layer 7, 15 ... Cathode 12 ... Electron blocking layer
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Abstract
Description
本発明の目的は、上記高分子材料により形成された有機層(薄膜)を有しており、発光効率が高く、長寿命な有機EL素子を提供することにある。
R1は、それぞれ独立に、水素原子、重水素原子、シアノ基、ニトロ基、フッ素原子、塩素原子、臭素原子、ヨウ素原子、炭素数1ないし8のアルキル基もしくはアルキルオキシ基、炭素数5ないし10のシクロアルキル基もしくはシクロアルキルオキシ基、炭素数2ないし6のアルケニル基、またはアリールオキシ基を示し、
R2は、それぞれ独立に、炭素数1~8のアルキル基もしくはアルキルオキシ基、炭素数5~10のシクロアルキル基もしくはシクロアルキルオキシ基を示し、
Xは、水素原子、アミノ基、1価のアリール基、または1価のヘテロアリール基を示し、
Lは、2価のフェニル基を示し、nは0~3の整数を示し、
aは0~3の整数を示し、bは0~4の整数を示す。
(1)正孔の注入特性が良い。
(2)正孔の移動度が大きい。
(3)ワイドギャップであり、電子阻止能力に優れる。
(4)薄膜状態が安定である。
(5)耐熱性に優れている。
という特性を有している。
(1)発光効率および電力効率が高い。
(2)実用駆動電圧が低い。
(3)長寿命である。
という利点を有している。
本発明の高分子量化合物が有するトリアリールアミン構造単位及び連結構造単位はいずれも2価の基であり、それぞれ下記の一般式(1)、(2)で表される。
アルキル基(炭素数1~8);
メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、tert-ブチル基、n-ペンチル基、イソペンチル基、ネオペンチル基、n-ヘキシル基、イソへキシル基、ネオへキシル基、n-ヘプチル基、イソへプチル基、ネオへプチル基、n-オクチル基、イソオクチル基、ネオオクチル基等。
アルキルオキシ基(炭素数1~8);
メチルオキシ基、エチルオキシ基、n-プロピルオキシ基、イソプロピルオキシ基、n-ブチルオキシ基、tert-ブチルオキシ基、n-ペンチルオキシ基、n-ヘキシルオキシ基、n-ヘプチルオキシ基、n-オクチルオキシ基等。
シクロアルキル基(炭素数5~10);
シクロペンチル基、シクロヘキシル基、1-アダマンチル基、2-アダマンチル基等。
シクロアルキルオキシ基(炭素数5~10);
シクロペンチルオキシ基、シクロヘキシルオキシ基、シクロヘプチルオキシ基、シクロオクチルオキシ基、1-アダマンチルオキシ基、2-アダマンチルオキシ基等。
アルケニル基(炭素数2~6);
ビニル基、アリル基、イソプロペニル基、2-ブテニル基等。
アリールオキシ基;
フェニルオキシ基、トリルオキシ基等。
アリール基;
フェニル基、ナフチル基、アントラセニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基等。
ヘテロアリール基;
ピリジル基、ピリミジニル基、トリアジニル基、フリル基、ピロリル基、チエニル基、キノリル基、イソキノリル基、ベンゾフラニル基、ベンゾチエニル基、インドリル基、カルバゾリル基、インデノカルバゾリル基、ベンゾオキサゾリル基、ベンゾチアゾリル基、キノキサリニル基、ベンゾイミダゾリル基、ピラゾリル基、ジベンゾフラニル基、ジベンゾチエニル基、ナフチリジニル基、フェナントロリニル基、アクリジニル基、カルボリニル基等。
ハロゲン原子、例えば、フッ素原子、塩素原子、臭素原子、ヨウ素原子;
アルキル基、特に炭素数が1~8のもの、例えば、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、イソブチル基、tert-ブチル基、n-ペンチル基、イソペンチル基、ネオペンチル基、n-ヘキシル基、イソへキシル基、ネオへキシル基、n-ヘプチル基、イソへプチル基、ネオへプチル基、n-オクチル基、イソオクチル基、ネオオクチル基;
アルキルオキシ基、特に炭素数1~8のもの、例えば、メチルオキシ基、エチルオキシ基、プロピルオキシ基;
アルケニル基、例えば、ビニル基、アリル基;
アリールオキシ基、例えば、フェニルオキシ基、トリルオキシ基;
アリール基、例えば、フェニル基、ビフェニリル基、ターフェニリル基、ナフチル基、アントラセニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基、トリフェニレニル基;
ヘテロアリール基、例えば、ピリジル基、ピリミジニル基、トリアジニル基、チエニル基、フリル基、ピロリル基、キノリル基、イソキノリル基、ベンゾフラニル基、ベンゾチエニル基、インドリル基、カルバゾリル基、インデノカルバゾリル基、ベンゾオキサゾリル基、ベンゾチアゾリル基、キノキサリニル基、ベンゾイミダゾリル基、ピラゾリル基、ジベンゾフラニル基、ジベンゾチエニル基、カルボリニル基;
アリールビニル基、例えば、スチリル基、ナフチルビニル基;
アシル基、例えば、アセチル基、ベンゾイル基等。
さらに、これらの置換基は、それぞれ独立して存在していることが好ましいが、これらの置換基同士が、単結合、置換基を有していてもよいメチレン基、酸素原子または硫黄原子を介して、互いに結合して環を形成していてもよい。
上述した一般式(1)で表されるトリアリールアミン構造単位、及び一般式(2)で表される連結構造単位からなる、一般式(3)で表される繰り返し単位を含む本発明の高分子量化合物は、既に述べたように、正孔の注入特性、正孔の移動度、電子阻止能力、薄膜安定性、耐熱性等の特性が優れているものであるが、これらの特性をより高め且つ成膜性を確保するという観点から、例えば、GPCで測定したポリスチレン換算での重量平均分子量は、好ましくは10,000以上1,000,000未満、より好ましくは10,000以上500,000未満、さらに好ましくは10,000以上200,000未満の範囲である。
また、上記式中のR1、R2、a及びbは、いずれも一般式(1)で示したものと同じである。
上述した本発明の高分子量化合物を用いて形成される有機層を備えた有機EL素子は、例えば図6に示す構造を有している。即ち、ガラス基板1(透明樹脂基板など、透明基板であってもよい)の上に、透明陽極2、正孔注入層3、正孔輸送層4、発光層5、電子輸送層6及び陰極7が設けられている。
銅フタロシアニンに代表されるポルフィリン化合物;
スターバースト型のトリフェニルアミン誘導体;
単結合またはヘテロ原子を含まない2価基で連結した構造を有するアリールアミン(例えば、トリフェニルアミン3量体及び4量体);
ヘキサシアノアザトリフェニレンのようなアクセプター性の複素環化合物;
塗布型の高分子材料、例えばポリ(3,4-エチレンジオキシチオフェン)(PEDOT)、ポリ(スチレンスルフォネート)(PSS)等。
ベンジジン誘導体、例えば、
N,N’-ジフェニル-N,N’-ジ(m-トリル)ベンジジン(以下、TPDと略す);
N,N’-ジフェニル-N,N’-ジ(α-ナフチル)ベンジジン(以下、NPDと略す);
N,N,N’,N’-テトラビフェニリルベンジジン;
アミン系誘導体、例えば、
1,1-ビス[4-(ジ-4-トリルアミノ)フェニル]シクロヘキサン(以下、TAPCと略す);
種々のトリフェニルアミン3量体および4量体;
正孔注入層用としても使用される塗布型高分子材料等。
カルバゾール誘導体の例
4,4’,4’’-トリ(N-カルバゾリル)トリフェニルアミン(以下、TCTAと略す);
9,9-ビス[4-(カルバゾール-9-イル)フェニル]フルオレン;
1,3-ビス(カルバゾール-9-イル)ベンゼン(以下、mCPと略す);
2,2-ビス(4-カルバゾール-9-イルフェニル)アダマンタン(以下、Ad-Czと略す)
トリアリールアミン構造を有する化合物の例
9-[4-(カルバゾール-9-イル)フェニル]-9-[4-(トリフェニルシリル)フェニル]-9H-フルオレン
バソクプロイン(以後、BCPと略称する)などのフェナントロリン誘導体;
アルミニウム(III)ビス(2-メチル-8-キノリナート)-4-フェニルフェノレート(以後、BAlqと略称する)などのキノリノール誘導体の金属錯体;
各種希土類錯体;
トリアゾール誘導体;
トリアジン誘導体;
オキサジアゾール誘導体等。
尚、以下の説明において、本発明の高分子量化合物が有する一般式(1)で表される構造単位を「構造単位A」、一般式(2)で表される連結構造単位を「構造単位B」、熱架橋性構造単位を「構造単位C」、一般式(1)とは異なるトリアリールアミン構造単位を「構造単位D」として示した。
N,N-ビス(4-ブロモフェニル)-9,9-ジ-n-オクチル-9H-フルオレン-2-アミン:16.7g
ビス(ピナコラト)ジボロン:11.9g
酢酸カリウム:5.7g
1,4-ジオキサン:170ml
次いで、[1,1’-ビス(ジフェニルホスフィノ)フェロセン]パラジウム(II)ジクロリドのジクロロメタン付加物0.19gを加えて加熱し、100℃で7時間撹拌した。室温まで冷却した後、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(酢酸エチル/n-ヘキサン=1/20)で精製することによって中間体1の白色粉体7.6g(収率40%)を得た。
N,N-ビス(4-ブロモフェニル)-N-(ベンゾシクロブテン-4-イル)-アミン:8.0g
ビス(ピナコラト)ジボロン:9.9g
酢酸カリウム:4.6g
1,4-ジオキサン:80ml
次いで、[1,1’-ビス(ジフェニルホスフィノ)フェロセン]パラジウム(II)ジクロリドのジクロロメタン付加物0.3gを加えて加熱し、90℃で11時間撹拌した。室温まで冷却した後、市水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をトルエン/メタノール=1/2により再結晶することによって、中間体2の白色粉体3.4g(収率35%)を得た。
1,3-ジブロモ-5-ヨードベンゼン:5.2g
カルバゾール:2.3g
銅:91mg
炭酸カリウム:2.6g
亜硫酸水素ナトリウム:0.2g
ドデシルベンゼン:10ml
50℃まで冷却した後、トルエンを加え、1時間撹拌し、濾過を行った。得られた濾液を減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(n-ヘキサン)で精製することによって中間体3の白色粉体2.2g(収率39%)を得た。
4-ブロモベンゾシクロブテン:9.8g
ビス(ピナコラト)ジボロン:15.0g
酢酸カリウム:7.9g
1,4-ジオキサン:100ml
次いで、[1,1’-ビス(ジフェニルホスフィノ)フェロセン]パラジウム(II)ジクロリドのジクロロメタン付加物0.4gを加えて加熱し、90℃で8時間撹拌した。室温まで冷却した後、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、シリカゲル62gを用いて吸着精製を行い、減圧下で濃縮することによって中間体4の淡黄色オイル11.4g(収率93%)を得た。
1,3-ジブロモ-5-ヨードベンゼン:5.7g
中間体4:3.7g
2M-炭酸カリウム水溶液:12ml
1,4-ジオキサン:79ml
次いで、テトラキストリフェニルホスフィンパラジウム(0)0.1gを加えて加熱し、還流下で17時間撹拌した。室温まで冷却した後、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(n-ヘキサン)で精製することによって中間体5の褐色粉体2.4g(収率26%)を得た。
中間体5:2.3g
ビス(ピナコラト)ジボロン:3.8g
酢酸カリウム:2.0g
1,4-ジオキサン:23ml
次いで、[1,1’-ビス(ジフェニルホスフィノ)フェロセン]パラジウム(II)ジクロリドのジクロロメタン付加物60mgを加えて加熱し、90℃で17時間撹拌した。室温まで冷却した後、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(酢酸エチル/n-ヘキサン=1/19)で精製することによって中間体6の白色粉体1.3g(収率45%)を得た。
2-ブロモ-9,9-ジオクチルフルオレン:20.0g
N,N-ジフェニル-4-(4,4,5,5-テトラメチル-1,3,2-ジオキサボロラン-2-イル)ベンゼンアミン:16.6g
2M-炭酸カリウム水溶液:28ml
トルエン:100ml
エタノール:25ml
次いで、テトラキストリフェニルホスフィンパラジウム(0)1.0gを加えて加熱し、還流下で6時間撹拌した。室温まで冷却した後、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(n-ヘキサン)で精製することによって中間体7の淡黄色オイル25.1g(収率93%)を得た。
中間体7:24.9g
テトラヒドロフラン:150ml
次いで、室温でN-ブロモスクシンイミド13.3gを加えて、5時間撹拌した。
次いで、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって中間体8の橙色オイル29.5g(収率95%)を得た。
中間体8:29.4g
ビス(ピナコラト)ジボロン:19.8g
酢酸カリウム:9.1g
1,4-ジオキサン:200ml
次いで、[1,1’-ビス(ジフェニルホスフィノ)フェロセン]パラジウム(II)ジクロリドのジクロロメタン付加物0.3gを加えて加熱し、100℃で10時間撹拌した。室温まで冷却した後、水とトルエンを加え、分液操作を行うことによって有機層を採取した。この有機層を無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(酢酸エチル/n-ヘキサン=1/20)で精製することによって中間体9の白色粉体8.0g(収率24%)を得た。
(高分子量化合物Aの合成)
下記の成分を、窒素置換した反応容器に加え、30分間窒素ガスを通気した。
中間体1:5.0g
1,3-ジブロモベンゼン:1.8g
中間体2:0.8g
リン酸三カリウム:6.9g
トルエン:9ml
水:5ml
1,4-ジオキサン:27ml
数平均分子量Mn(ポリスチレン換算):32,000
重量平均分子量Mw(ポリスチレン換算):55,000
分散度(Mw/Mn):1.7
(高分子量化合物Bの合成)
下記の成分を、窒素置換した反応容器に加え、30分間窒素ガスを通気した。
中間体1:4.0g
1,4-ジブロモベンゼン:3.6g
中間体2:0.9g
リン酸三カリウム:5.2g
トルエン:7ml
水:4ml
1,4-ジオキサン:22ml
数平均分子量Mn(ポリスチレン換算):32,000
重量平均分子量Mw(ポリスチレン換算):57,000
分散度(Mw/Mn):1.8
(高分子量化合物Cの合成)
下記の成分を、窒素置換した反応容器に加え、30分間窒素ガスを通気した。
中間体1:3.4g
中間体3:2.1g
中間体2:0.5g
リン酸三カリウム:4.7g
トルエン:7ml
水:4ml
1,4-ジオキサン:21ml
数平均分子量Mn(ポリスチレン換算):35,000
重量平均分子量Mw(ポリスチレン換算):69,000
分散度(Mw/Mn):2.0
(高分子量化合物Dの合成)
下記の成分を、窒素置換した反応容器に加え、30分間窒素ガスを通気した。
中間体1:5.0g
1,3-ジブロモベンゼン:1.8g
中間体6:0.7g
リン酸三カリウム:6.9g
トルエン:9ml
水:5ml
1,4-ジオキサン:27ml
数平均分子量Mn(ポリスチレン換算):44,000
重量平均分子量Mw(ポリスチレン換算):71,000
分散度(Mw/Mn):1.6
(高分子量化合物Eの合成)
下記の成分を、窒素置換した反応容器に加え、30分間窒素ガスを通気した。
中間体9:5.0g
1,3-ジブロモベンゼン:1.7g
中間体2:0.7g
リン酸三カリウム:6.3g
トルエン:9ml
水:5ml
1,4-ジオキサン:27ml
数平均分子量Mn(ポリスチレン換算):55,000
重量平均分子量Mw(ポリスチレン換算):93,000
分散度(Mw/Mn):1.7
(高分子量化合物Fの合成)
下記の成分を、窒素置換した反応容器に加え、30分間窒素ガスを通気した。
中間体1:5.0g
1,3-ジブロモベンゼン:1.8g
N-フェニル-4-(4,4,5,5-テトラメチル-1,3,2-ジオキサボロラン-2-イル)-N-[4-(4,4,5,5-テトラメチル-1,3,2-ジオキサボロラン-2-イル)フェニル]ベンゼンアミン:0.8g
リン酸三カリウム:6.9g
トルエン:9ml
水:5ml
1,4-ジオキサン:27ml
数平均分子量Mn(ポリスチレン換算):32,000
重量平均分子量Mw(ポリスチレン換算):54,000
分散度(Mw/Mn):1.7
(仕事関数の測定)
実施例1~6で合成された高分子量化合物A~Fを用いて、ITO基板の上に膜厚80nmの塗布膜を作製して、イオン化ポテンシャル測定装置(住友重機械工業株式会社製、PYS-202型)で仕事関数を測定した。その結果は以下の通りであった。
(有機EL素子の作製と評価)
図6に示す層構造の有機EL素子を、以下の手法により作製した。
尚、二元蒸着では、蒸着速度比を、ETM-1:ETM-2=50:50とした。
このように、透明陽極2、正孔注入層3、正孔輸送層4、発光層5、電子輸送層6及び陰極7が形成されているガラス基板を、乾燥窒素にて置換したグローブボックス内に移動し、UV硬化樹脂を用いて封止用の他のガラス基板を貼り合わせ、有機EL素子とした。作製した有機EL素子について、大気中、常温で特性測定を行った。
また、作製した有機EL素子に直流電圧を印加したときの発光特性を測定した。
上記の測定結果は、表2に示した。
高分子量化合物Aに代えて、実施例2の化合物(高分子量化合物B)をトルエンに0.6重量%溶解させて調製された塗布液を用いて正孔輸送層4を形成した以外は、実施例8と全く同様にして有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表2にまとめて示した。
高分子量化合物Aに代えて、実施例3の化合物(高分子量化合物C)をトルエンに0.6重量%溶解させて調製された塗布液を用いて正孔輸送層4を形成した以外は、実施例8と全く同様にして有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表2にまとめて示した。
高分子量化合物Aに代えて、実施例4の化合物(高分子量化合物D)をトルエンに0.6重量%溶解させて調製された塗布液を用いて正孔輸送層4を形成した以外は、実施例8と全く同様にして有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表2にまとめて示した。
高分子量化合物Aに代えて、実施例5の化合物(高分子量化合物E)をトルエンに0.6重量%溶解させて調製された塗布液を用いて正孔輸送層4を形成した以外は、実施例8と全く同様にして有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表2にまとめて示した。
高分子量化合物Aに代えて、実施例6の化合物(高分子量化合物F)をトルエンに0.6重量%溶解させて調製された塗布液を用いて正孔輸送層4を形成した以外は、実施例8と全く同様にして有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表2にまとめて示した。
高分子量化合物Aに代えて、下記のTFB(正孔輸送性ポリマー)をトルエンに0.6重量%溶解させて調製された塗布液を用いて正孔輸送層4を形成した以外は、実施例8と全く同様にして有機EL素子を作製した。
図7に示す層構造の有機EL素子を、以下の手法により作製した。
このように、透明陽極9、正孔注入層10、正孔輸送層11、電子阻止層12、発光層13、電子輸送層14及び陰極15が形成されているガラス基板を、乾燥窒素にて置換したグローブボックス内に移動し、UV硬化樹脂を用いて封止用の他のガラス基板を貼り合わせ、有機EL素子とした。作製した有機EL素子について、大気中、常温で特性測定を行った。また、作製した有機EL素子に直流電圧を印加したときの発光特性を測定した。前記の測定結果は、表3に示した。
図6に示す層構造の有機EL素子を、以下の手法により作製した。
このように、透明陽極2、正孔注入層3、正孔輸送層4、発光層5、電子輸送層6及び陰極7が形成されているガラス基板を、乾燥窒素にて置換したグローブボックス内に移動し、UV硬化樹脂を用いて封止用の他のガラス基板を貼り合わせ、有機EL素子とした。作製した有機EL素子について、大気中、常温で特性測定を行った。また、作製した有機EL素子に直流電圧を印加したときの発光特性を測定した。前記の測定結果は、表3に示した。
(残膜率の測定と評価)
ガラス基板上に、実施例1で合成された高分子量化合物Aをトルエンに0.6重量%溶解した溶液を用いて、スピンコート法により薄膜を成膜した。得られた膜を乾燥窒素にて置換したグローブボックス内に移し、ホットプレート上、200℃で60分、または230℃で10分のベークを行った。ベークされた膜を室温まで冷却後、波長300~700nmの光に対する吸収強度を、分光光度計(U-3000:日立製作所製)を用いて測定した。また、吸収強度を測定した膜について、スピンコーターを用い、2000rpmで15秒間の条件でトルエンリンスを行った。リンスされた膜の吸収強度を、分光光度計を用いて測定した。
残膜率(%)=(α/β)×100
式中、
αは、リンス後の吸収強度(ピークトップ)であり、
βは、リンス前の吸収強度(ピークトップ)である。
高分子量化合物Aを、実施例2で合成された高分子量化合物Bに変えた以外は、実施例15と同様にして残膜率を算出し、その結果を表4に示した。
高分子量化合物Aを、実施例3で合成された高分子量化合物Cに変えた以外は、実施例15と同様にして残膜率を算出し、その結果を表4に示した。
高分子量化合物Aを、実施例4で合成された高分子量化合物Dに変えた以外は、実施例15と同様にして残膜率を算出し、その結果を表4に示した。
高分子量化合物Aを、実施例5で合成された高分子量化合物Eに変えた以外は、実施例15と同様にして残膜率を算出し、その結果を表4に示した。
高分子量化合物Aを、比較例1で使用されているTFBに変えた以外は、実施例15と同様にして残膜率を算出し、その結果を表4に示した。
2、9・・・・透明陽極
3、10・・・正孔注入層
4、11・・・正孔輸送層
5、13・・・発光層
6、14・・・電子輸送層
7、15・・・陰極
12・・・・・電子阻止層
Claims (13)
- 下記一般式(1)で表されるトリアリールアミン構造単位、及び下記一般式(2)で表される連結構造単位からなる、下記一般式(3)で表される繰り返し単位を含み、ポリスチレン換算で10,000以上1,000,000未満の重量平均分子量を有している高分子量化合物。
式中、
R1は、それぞれ独立に、水素原子、重水素原子、シアノ基、ニトロ基、フッ素原子、塩素原子、臭素原子、ヨウ素原子、炭素数1ないし8のアルキル基もしくはアルキルオキシ基、炭素数5ないし10のシクロアルキル基もしくはシクロアルキルオキシ基、炭素数2ないし6のアルケニル基、またはアリールオキシ基を示し、
R2は、それぞれ独立に、炭素数1~8のアルキル基もしくはアルキルオキシ基、炭素数5~10のシクロアルキル基もしくはシクロアルキルオキシ基を示し、
Xは、水素原子、アミノ基、1価のアリール基、または1価のヘテロアリール基を示し、
Lは、2価のフェニル基を示し、nは0~3の整数を示し、
aは0~3の整数を示し、bは0~4の整数を示す。 - R1が水素原子である請求項1に記載の高分子量化合物。
- R2が炭素数1~8のアルキル基である請求項1または請求項2に記載の高分子量化合物。
- Xが水素原子である請求項1~3のいずれか1項に記載の高分子量化合物。
- Xが、ジフェニルアミノ基、フェニル基、ナフチル基、ジベンゾフラニル基、ジベンゾチエニル基、フェナントレニル基、フルオレニル基、カルバゾリル基、インデノカルバゾリル基、またはアクリジニル基である請求項1~3のいずれか1項に記載の高分子量化合物。
- さらに、熱架橋性構造単位、及び前記一般式(2)で表される連結構造単位からなる繰り返し単位を含む請求項1~5のいずれか1項に記載の高分子量化合物。
- さらに、前記一般式(1)とは異なるトリアリールアミン構造単位、及び前記一般式(2)で表される連結構造単位からなる繰り返し単位を含む請求項1~5のいずれか1項に記載の高分子量化合物。
- 一対の電極と、その間に挟まれた少なくとも1つの有機層を有する有機エレクトロルミネッセンス素子であって、請求項1~8のいずれか1項に記載の高分子量化合物を構成材料として含有する有機層を、少なくとも1つ有する有機エレクトロルミネッセンス素子。
- 前記有機層が正孔輸送層である、請求項9に記載の有機エレクトロルミネッセンス素子。
- 前記有機層が電子阻止層である、請求項9に記載の有機エレクトロルミネッセンス素子。
- 前記有機層が正孔注入層である、請求項9に記載の有機エレクトロルミネッセンス素子。
- 前記有機層が発光層である、請求項9に記載の有機エレクトロルミネッセンス素子。
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| US16/972,672 US11999818B2 (en) | 2018-07-03 | 2019-07-01 | High molecular weight triarylamine compound comprising terphenyl structure in molecular main chain and organic electroluminescent element comprising said high molecular weight compound |
| KR1020207033265A KR102779388B1 (ko) | 2018-07-03 | 2019-07-01 | 분자 주사슬에 터페닐 구조를 포함하는 트리아릴아민 고분자량 화합물 및 이들 고분자량 화합물을 포함하는 유기 일렉트로 루미네선스 소자 |
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| EP19830414.9A EP3819325A4 (en) | 2018-07-03 | 2019-07-01 | HIGH MOLECULAR WEIGHT TRIARYLAMINE COMPOUND HAVING TERPHENYL STRUCTURE IN THE MAIN MOLECULAR CHAIN AND ORGANIC ELECTROLUMINESCENCE ELEMENT WITH THIS HIGH MOLECULAR WEIGHT COMPOUND |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020145234A (ja) * | 2019-03-04 | 2020-09-10 | 日立化成株式会社 | 有機エレクトロニクス材料及びその利用 |
| JPWO2021070878A1 (ja) * | 2019-10-09 | 2021-04-15 | ||
| WO2021075183A1 (ja) * | 2019-10-15 | 2021-04-22 | 住友化学株式会社 | 組成物及びそれを含有する発光素子 |
| WO2021166921A1 (ja) * | 2020-02-20 | 2021-08-26 | 保土谷化学工業株式会社 | 高分子量化合物および該高分子量化合物を含む発光ダイオード |
| CN114031752A (zh) * | 2020-12-29 | 2022-02-11 | 广东聚华印刷显示技术有限公司 | 聚合型可交联化合物及其制备方法和应用 |
| CN114106295A (zh) * | 2020-12-29 | 2022-03-01 | 广东聚华印刷显示技术有限公司 | 可交联型聚合物及其制备方法和应用 |
| WO2022244822A1 (ja) * | 2021-05-21 | 2022-11-24 | 保土谷化学工業株式会社 | トリアリールアミン高分子量化合物およびこれらの高分子量化合物を含む有機エレクトロルミネッセンス素子 |
| EP4141041A1 (en) | 2021-08-31 | 2023-03-01 | Samsung Electronics Co., Ltd. | A polymer, a composition, and an electroluminescence device |
| WO2023167253A1 (ja) * | 2022-03-04 | 2023-09-07 | 保土谷化学工業株式会社 | トリアリールアミン高分子量化合物および有機エレクトロルミネッセンス素子 |
| WO2023182377A1 (ja) * | 2022-03-25 | 2023-09-28 | 保土谷化学工業株式会社 | トリアリールアミン高分子量化合物および有機エレクトロルミネッセンス素子 |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054385A1 (en) | 1998-04-21 | 1999-10-28 | The Dow Chemical Company | Fluorene-containing polymers and electroluminescent devices therefrom |
| WO2005059951A2 (en) | 2003-12-19 | 2005-06-30 | Cambridge Display Technology Limited | Optical device comprising a charge transport layer of insoluble organic material and method for the production thereof |
| JP2007119763A (ja) | 2005-09-29 | 2007-05-17 | Sumitomo Chemical Co Ltd | 高分子材料及び高分子発光素子 |
| JP2007177225A (ja) | 2005-12-01 | 2007-07-12 | Sumitomo Chemical Co Ltd | 高分子化合物およびそれを用いた高分子発光素子 |
| US20080274303A1 (en) | 2004-02-26 | 2008-11-06 | Katsumi Agata | Polymer Compound and Polymer Light Emitting Device Using the Same |
| WO2009102027A1 (ja) * | 2008-02-15 | 2009-08-20 | Mitsubishi Chemical Corporation | 共役ポリマー、不溶化ポリマー、有機電界発光素子材料、有機電界発光素子用組成物、ポリマーの製造方法、有機電界発光素子、有機elディスプレイ、及び有機el照明 |
| US7651746B2 (en) | 2003-11-14 | 2010-01-26 | Sumitomo Chemical Company, Limited | Halogenated bisdiarylaminopolycyclic aromatic compounds and polymers thereof |
| US20100176377A1 (en) | 2005-11-18 | 2010-07-15 | Sumitomo Chemical Company, Limited | Polymeric compound and polymeric electroluminescence element using the same |
| JP2012092181A (ja) * | 2010-10-25 | 2012-05-17 | Tosoh Corp | ランダム共重合体 |
| WO2014009310A1 (en) | 2012-07-09 | 2014-01-16 | Novaled Ag | Doped organic semiconductive matrix material |
| WO2018101331A1 (ja) * | 2016-11-30 | 2018-06-07 | 保土谷化学工業株式会社 | 置換トリアリールアミン構造単位を含む高分子量化合物 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0028867D0 (en) * | 2000-11-28 | 2001-01-10 | Avecia Ltd | Field effect translators,methods for the manufacture thereof and materials therefor |
| JP2007162008A (ja) * | 2005-11-16 | 2007-06-28 | Tokyo Institute Of Technology | 高分子化合物及び高分子発光素子 |
| US8580393B2 (en) * | 2008-03-05 | 2013-11-12 | Idemitsu Kosan Co., Ltd. | Polymer and organic electroluminescent device including the same |
| JP2010062442A (ja) * | 2008-09-05 | 2010-03-18 | Canon Inc | 有機発光素子 |
| JP5343832B2 (ja) * | 2008-12-04 | 2013-11-13 | 三菱化学株式会社 | アリールアミンポリマー、有機電界発光素子材料、有機電界発光素子用組成物、有機電界発光素子、有機elディスプレイ及び有機el照明 |
| WO2011048822A1 (ja) * | 2009-10-23 | 2011-04-28 | 保土谷化学工業株式会社 | 有機エレクトロルミネッセンス素子 |
| DE102010007938A1 (de) * | 2010-02-12 | 2011-10-06 | Merck Patent Gmbh | Elektrolumineszierende Polymere, Verfahren zu ihrer Herstellung sowie ihre Verwendung |
| GB201107905D0 (en) | 2011-05-12 | 2011-06-22 | Cambridge Display Tech Ltd | Light-emitting material, composition and device |
| WO2014038417A1 (ja) * | 2012-09-07 | 2014-03-13 | 保土谷化学工業株式会社 | 新規なベンゾチエノインドール誘導体および該誘導体が使用されている有機エレクトロルミネッセンス素子 |
| GB2524747B (en) * | 2014-03-31 | 2017-03-01 | Cambridge Display Tech Ltd | Amine/fluorene copolymers and organic electronic devices comprising said copolymers |
| CN106795277B (zh) * | 2014-08-28 | 2020-04-10 | 住友化学株式会社 | 高分子化合物和使用该高分子化合物的发光元件 |
| JP6822363B2 (ja) | 2016-09-29 | 2021-01-27 | 住友化学株式会社 | 発光素子 |
| JP6848787B2 (ja) | 2016-09-29 | 2021-03-24 | 住友化学株式会社 | 発光素子 |
| CN113421989B (zh) * | 2016-09-29 | 2025-05-02 | 住友化学株式会社 | 发光元件及对于制造该发光元件而言有用的组合物 |
-
2019
- 2019-07-01 JP JP2020528985A patent/JP7421476B2/ja active Active
- 2019-07-01 CN CN201980038050.XA patent/CN112384547B/zh active Active
- 2019-07-01 KR KR1020207033265A patent/KR102779388B1/ko active Active
- 2019-07-01 WO PCT/JP2019/026149 patent/WO2020009069A1/ja not_active Ceased
- 2019-07-01 EP EP19830414.9A patent/EP3819325A4/en not_active Withdrawn
- 2019-07-01 US US16/972,672 patent/US11999818B2/en active Active
- 2019-07-02 TW TW108123274A patent/TWI863916B/zh active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999054385A1 (en) | 1998-04-21 | 1999-10-28 | The Dow Chemical Company | Fluorene-containing polymers and electroluminescent devices therefrom |
| US7651746B2 (en) | 2003-11-14 | 2010-01-26 | Sumitomo Chemical Company, Limited | Halogenated bisdiarylaminopolycyclic aromatic compounds and polymers thereof |
| WO2005059951A2 (en) | 2003-12-19 | 2005-06-30 | Cambridge Display Technology Limited | Optical device comprising a charge transport layer of insoluble organic material and method for the production thereof |
| US20080274303A1 (en) | 2004-02-26 | 2008-11-06 | Katsumi Agata | Polymer Compound and Polymer Light Emitting Device Using the Same |
| JP2007119763A (ja) | 2005-09-29 | 2007-05-17 | Sumitomo Chemical Co Ltd | 高分子材料及び高分子発光素子 |
| US20100176377A1 (en) | 2005-11-18 | 2010-07-15 | Sumitomo Chemical Company, Limited | Polymeric compound and polymeric electroluminescence element using the same |
| JP2007177225A (ja) | 2005-12-01 | 2007-07-12 | Sumitomo Chemical Co Ltd | 高分子化合物およびそれを用いた高分子発光素子 |
| WO2009102027A1 (ja) * | 2008-02-15 | 2009-08-20 | Mitsubishi Chemical Corporation | 共役ポリマー、不溶化ポリマー、有機電界発光素子材料、有機電界発光素子用組成物、ポリマーの製造方法、有機電界発光素子、有機elディスプレイ、及び有機el照明 |
| JP2012092181A (ja) * | 2010-10-25 | 2012-05-17 | Tosoh Corp | ランダム共重合体 |
| WO2014009310A1 (en) | 2012-07-09 | 2014-01-16 | Novaled Ag | Doped organic semiconductive matrix material |
| WO2018101331A1 (ja) * | 2016-11-30 | 2018-06-07 | 保土谷化学工業株式会社 | 置換トリアリールアミン構造単位を含む高分子量化合物 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3819325A4 |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7318233B2 (ja) | 2019-03-04 | 2023-08-01 | 株式会社レゾナック | 有機エレクトロニクス材料及びその利用 |
| JP2020145234A (ja) * | 2019-03-04 | 2020-09-10 | 日立化成株式会社 | 有機エレクトロニクス材料及びその利用 |
| JPWO2021070878A1 (ja) * | 2019-10-09 | 2021-04-15 | ||
| WO2021070878A1 (ja) | 2019-10-09 | 2021-04-15 | 保土谷化学工業株式会社 | 高分子量化合物からなる有機層を有する有機エレクトロルミネッセンス素子 |
| JP7579268B2 (ja) | 2019-10-09 | 2024-11-07 | 保土谷化学工業株式会社 | 高分子量化合物からなる有機層を有する有機エレクトロルミネッセンス素子 |
| WO2021075183A1 (ja) * | 2019-10-15 | 2021-04-22 | 住友化学株式会社 | 組成物及びそれを含有する発光素子 |
| JP2021063210A (ja) * | 2019-10-15 | 2021-04-22 | 住友化学株式会社 | 組成物及びそれを含有する発光素子 |
| JP7594870B2 (ja) | 2019-10-15 | 2024-12-05 | 住友化学株式会社 | 組成物及びそれを含有する発光素子 |
| WO2021166921A1 (ja) * | 2020-02-20 | 2021-08-26 | 保土谷化学工業株式会社 | 高分子量化合物および該高分子量化合物を含む発光ダイオード |
| JPWO2021166921A1 (ja) * | 2020-02-20 | 2021-08-26 | ||
| CN115003729A (zh) * | 2020-02-20 | 2022-09-02 | 保土谷化学工业株式会社 | 高分子量化合物及含有该高分子量化合物的发光二极管 |
| JP7824212B2 (ja) | 2020-02-20 | 2026-03-04 | 保土谷化学工業株式会社 | 高分子量化合物および該高分子量化合物を含む発光ダイオード |
| CN114106295A (zh) * | 2020-12-29 | 2022-03-01 | 广东聚华印刷显示技术有限公司 | 可交联型聚合物及其制备方法和应用 |
| CN114031752B (zh) * | 2020-12-29 | 2023-06-16 | 广东聚华印刷显示技术有限公司 | 聚合型可交联化合物及其制备方法和应用 |
| CN114106295B (zh) * | 2020-12-29 | 2023-06-16 | 广东聚华印刷显示技术有限公司 | 可交联型聚合物及其制备方法和应用 |
| CN114031752A (zh) * | 2020-12-29 | 2022-02-11 | 广东聚华印刷显示技术有限公司 | 聚合型可交联化合物及其制备方法和应用 |
| WO2022244822A1 (ja) * | 2021-05-21 | 2022-11-24 | 保土谷化学工業株式会社 | トリアリールアミン高分子量化合物およびこれらの高分子量化合物を含む有機エレクトロルミネッセンス素子 |
| EP4141041A1 (en) | 2021-08-31 | 2023-03-01 | Samsung Electronics Co., Ltd. | A polymer, a composition, and an electroluminescence device |
| WO2023167253A1 (ja) * | 2022-03-04 | 2023-09-07 | 保土谷化学工業株式会社 | トリアリールアミン高分子量化合物および有機エレクトロルミネッセンス素子 |
| WO2023182377A1 (ja) * | 2022-03-25 | 2023-09-28 | 保土谷化学工業株式会社 | トリアリールアミン高分子量化合物および有機エレクトロルミネッセンス素子 |
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| Publication number | Publication date |
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| US11999818B2 (en) | 2024-06-04 |
| JP7421476B2 (ja) | 2024-01-24 |
| CN112384547B (zh) | 2023-07-11 |
| CN112384547A (zh) | 2021-02-19 |
| US20210253785A1 (en) | 2021-08-19 |
| EP3819325A4 (en) | 2022-05-11 |
| KR102779388B1 (ko) | 2025-03-10 |
| TW202006014A (zh) | 2020-02-01 |
| JPWO2020009069A1 (ja) | 2021-08-02 |
| KR20210027250A (ko) | 2021-03-10 |
| TWI863916B (zh) | 2024-12-01 |
| EP3819325A1 (en) | 2021-05-12 |
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