WO2004007447A1 - スクアリリウム化合物およびその金属錯体ならびにこれらを含有する有機el素子 - Google Patents
スクアリリウム化合物およびその金属錯体ならびにこれらを含有する有機el素子 Download PDFInfo
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- WO2004007447A1 WO2004007447A1 PCT/JP2003/008854 JP0308854W WO2004007447A1 WO 2004007447 A1 WO2004007447 A1 WO 2004007447A1 JP 0308854 W JP0308854 W JP 0308854W WO 2004007447 A1 WO2004007447 A1 WO 2004007447A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D207/46—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with hetero atoms directly attached to the ring nitrogen atom
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/654—Aromatic compounds comprising a hetero atom comprising only nitrogen as heteroatom
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/656—Aromatic compounds comprising a hetero atom comprising two or more different heteroatoms per ring
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1018—Heterocyclic compounds
- C09K2211/1025—Heterocyclic compounds characterised by ligands
- C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/14—Carrier transporting layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/321—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3]
- H10K85/324—Metal complexes comprising a group IIIA element, e.g. Tris (8-hydroxyquinoline) gallium [Gaq3] comprising aluminium, e.g. Alq3
Definitions
- the present invention relates to a squarium compound, a metal complex thereof, and an organic EL (Electroluminescence) device containing the same, particularly an organic EL device which can be suitably used for emitting red light.
- Organic EL devices are different from inorganic EL devices in that they are not restricted by the need for AC drive and high voltage, and because of the diversity of organic compounds, it is thought that multicoloring can be easily achieved. Application is expected, and development is being actively carried out. When the organic EL device is applied to a full-color display, it is necessary to obtain three primary colors, red, green and blue.
- Japanese Patent Application Laid-Open No. Hei 6-933257 discloses that by including a squalium compound represented by the following formula in a light emitting layer as a dopant, the emission color changes in response to an applied voltage. Although an organic EL device is disclosed as a feature, the EL device does not provide sufficient color purity for red light emission and is not satisfactory in practical use.
- An object of the present invention is to provide a novel squarium compound and a metal complex thereof, and further provide an organic EL device containing the compound or the metal complex and capable of emitting red light in particular.
- the present invention provides the following [1] to [13].
- R 1 and R 2 are the same or different and each represent a hydrogen atom or an alkyl group which may have a substituent, or R 1 and R 2 together with an adjacent nitrogen atom represent a substituent R 3 , R 4 , R 5 and R 6 are the same or different and each have a hydrogen atom, an alkyl group which may have a substituent, or a substituent R 1 and R 3 , or R 2 and R 4 together with the adjacent N—C—C each have an optionally substituted alkoxyl group, hydroxyl group or halogen atom.
- R 7 , R 8 , R 9 and R 1 Q may be the same or different and are a hydrogen atom, a hydroxyl group, a halogen atom, an amino group which may have a substituent,
- An alkyl group which may have a substituent, an alkoxyl group which may have a substituent Represents an optionally substituted aralkyl group, an optionally substituted aryl group, a nitro group, a cyano group or an optionally substituted heterocyclic group
- X represents a nitrogen atom Or represents a carbon atom (however, when X is a nitrogen atom, R 8 is not present);
- Y represents a sulfur atom, a nitrogen atom or an oxygen atom (provided that Y is a sulfur atom or an oxygen atom) R 1 Q is not present when is).
- An organic EL comprising the squarylium compound described in any one of [1] to [9] or a metal complex thereof.
- An organic EL device having a hole transport layer, wherein the squarium compound or a metal complex thereof described in any one of [1] to [9] is contained in the hole transport layer.
- Organic EL device having a hole transport layer, wherein the squarium compound or a metal complex thereof described in any one of [1] to [9] is contained in the hole transport layer.
- An organic EL device having an electron transport layer, wherein the squarium compound or the metal complex thereof described in any one of [1] to [9] is contained in the electron transport layer.
- EL element
- squarylium compound represented by the general formula (I) may be referred to as a squarylium compound (I).
- examples of the alkyl moiety in the alkyl group and the alkoxyl group include a linear or branched alkyl group having 1 to 6 carbon atoms or a cyclic alkyl group having 3 to 8 carbon atoms. Examples include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, tert-butyl, pentyl, and phenyl.
- Examples include a sopentyl group, a 1-methylbutyl group, a 2-methylbutyl group, a tert-pentyl group, a hexyl group, a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, and a cyclooctyl group.
- Examples of the aralkyl group include an aralkyl group having 7 to 15 carbon atoms, and specific examples thereof include a benzyl group, a phenethyl group, a phenylpropyl group, and a naphthylmethyl group.
- aryl group examples include an aryl group having 6 to 14 carbon atoms, and specific examples thereof include a phenyl group, a naphthyl group, an anthryl group, and an azulenyl group.
- halogen atom examples include a chlorine atom, a bromine atom, a fluorine atom and an iodine atom.
- heterocyclic ring in the heterocyclic group examples include a 5- or 6-membered monocyclic aromatic or aliphatic heterocyclic ring containing at least one atom selected from a nitrogen atom, an oxygen atom and a sulfur atom; A condensed aromatic or aliphatic heterocycle containing at least one atom selected from a nitrogen atom, an oxygen atom and a sulfur atom, which is a bicyclic or tricyclic fused 8-membered ring, and specific examples thereof.
- Examples include a bilizine ring, a pyrazine ring, a pyrimidine ring, a pyridazine ring, a quinoline ring, an isoquinoline ring, a phthalazine ring, a quinazoline ring, a quinoxaline ring, a naphthyridine ring, a sinnoline ring, a pyrrole ring, a pyrazole ring, an imidazole ring, and a triazo ring.
- heterocyclic ring formed by R 1 and R 2 taken together with the adjacent nitrogen atom Is, for example, a 5- or 6-membered monocyclic heterocycle containing at least one nitrogen atom (the monocyclic heterocycle may contain another nitrogen, oxygen or sulfur atom) Or a condensed heterocyclic ring containing at least one nitrogen atom, which is a bicyclic or tricyclic condensed 3- to 8-membered ring (the condensed heterocyclic ring may be another nitrogen atom, an oxygen atom or Which may contain a sulfur atom).
- a pyridine ring examples thereof include a pyridine ring, a piperidine ring, a virazine ring, a morpholine ring, a thiomorpholine ring, a homopiperidine ring, and a homopiperazine ring.
- the heterocyclic ring formed by R 1 and R 3 , or R 2 and R 4 together with the adjacent N—C—C is, for example, a 5-membered group containing at least one nitrogen atom or A 6-membered monocyclic heterocyclic ring (the monocyclic heterocyclic ring may contain another nitrogen atom, oxygen atom or sulfur atom), a bicyclic or tricyclic condensed 3- to 8-membered ring And a condensed heterocyclic ring containing at least one nitrogen atom (the condensed heterocyclic ring may contain another nitrogen atom, an oxygen atom or a sulfur atom) and the like.
- substituent for the heterocyclic ring formed together with C_C include the same or different 1 to 5 substituents, specifically, a hydroxyl group, a carboxyl group, a halogen atom, an alkyl group And an alkoxyl group, a nitro group and an alkyl-substituted or unsubstituted amino group.
- the halogen atom, the alkyl group and the alkoxyl group have the same meanings as above, respectively, and the alkyl part of the alkyl-substituted amino group has the same meaning as the above-mentioned alkyl group. .
- substituents of the alkyl group and the alkoxyl group for example, the same or Differently include 1 to 3 substituents, specifically, a hydroxyl group, a carboxyl group, a halogen atom, an alkoxyl group and the like.
- the halogen atom and the alkoxyl group are as defined above.
- substituent of the amino group examples include the same or different 1 or 2 alkyl groups, and the alkyl group in this case has the same meaning as described above.
- the metal in the metal complex of the squarylium compound (I) is not particularly limited as long as it forms a complex with the squarylium compound.
- examples thereof include aluminum, zinc, beryllium, copper, iron, nickel, chromium, cobalt, and manganese.
- the squarylium compound (I) preferably has a coordination number of 2 or 3.
- the squarium compound (I) can be produced by a known method (WO 01/44233 and the like) or according to them. Hereinafter, an example of the method for producing the squarylium compound (I) will be described.
- Compound (VI) is obtained by mixing compound (IV) and 1 to 2 moles of compound (V) in a solvent in the presence of 1 to 2 moles of a base, if necessary, at a temperature between 0 ° C and room temperature. It is obtained by reacting for 30 minutes to 7 hours.
- Solvents include chloroform, dichloromethane, 1,2-dichloroethane, Ethyl acetate, getyl ether, methyl-tert-butyl ether, tetrahydrofuran, toluene, benzene, N, N-dimethylformamide, dimethylsulfoxide and the like are used.
- an organic base such as quinoline, triethylamine, pyridine or the like, or an inorganic base such as potassium carbonate, potassium hydrogen carbonate or sodium hydrogen carbonate is used.
- Compound (VI I) is prepared by converting compound (VI) in a 50-90% by volume aqueous acetic acid solution at a temperature between 90-110 ° C for 1-7 hours, or 50-99% by weight trifluoroacetic acid. It is obtained by reacting in an aqueous solution at a temperature between 45 and 50 ° C for 1 to 3 hours.
- the squarylium compound (I) can be prepared by converting the compound (VII) with 1 to 2 moles of the compound (VIII) in a solvent, if necessary, in the presence of 1 to 2 moles of a base. It is obtained by reacting at 1 ° C for 1 to 15 hours.
- an alcoholic solvent having 2 to 8 carbon atoms such as ethanol, propanol, isopropyl alcohol, butanol, and oxanol, or a mixed solvent of the alcoholic solvent and benzene or toluene (50 vol. % Or more).
- an organic base such as quinoline, triethylamine, pyridine or the like, or an inorganic base such as potassium carbonate, potassium hydrogen carbonate or sodium hydrogen carbonate is used.
- Compound (IX) can be obtained by performing the same operation as in the above reaction formula (1-a) except that compound (VIII) is used instead of compound (V).
- Compound (X) is the same except that compound (IX) is used instead of compound (VI) Can be obtained by performing the same operation as in the above-mentioned reaction formula (1-b).
- the squarylium compound (I) is the same as the above-mentioned reaction formula (1-c) except that the compound (X) is used instead of the compound (VI I) and the compound (V) is used instead of the compound (VI II). Can be obtained by performing the following operations. After the reaction, the squarylium compound (I) can be isolated by distilling off the solvent or filtering. Further, if necessary, it is isolated and purified by further purifying by a method usually used in organic synthetic chemistry (column chromatography, recrystallization or washing with a solvent, etc.).
- Q q + represents a metal ion having coordination ability
- Q represents a metal
- q represents a valence of an ion generated from the metal.
- the metal complex of the squarylium compound (I) is obtained by combining the squarylium compound (I) and a raw material that provides a metal ion having a coordinating ability (a raw material that provides Q q + ), if necessary, in the presence of an acid in a solvent at room temperature It is obtained by reacting at a temperature between 120120 ° C. for 5 minutes to 15 hours.
- the raw material giving Q q + is preferably used such that the ratio of the number of moles of the squarylium compound (I): the number of moles X q of the raw material giving Q q + is 1: 0.5 to 2.
- Examples of the raw material that gives Q q + include aluminum tris (acetyl acetate), aluminum tris (ethyl acetate), aluminum triisopropoxide, aluminum tri sec-butoxide, and aluminum triethoxide. , Aluminum chloride, zinc acetate, zinc chloride, beryllium sulfate, copper chloride, copper acetate, nickel acetate, and the like.
- the acid examples include acetic acid, propionic acid, butyric acid, isobutyric acid, valeric acid, Organic acids such as sovaleric acid and P-toluenesulfonic acid; and organic acids such as hydrochloric acid, sulfuric acid, and phosphoric acid can be used in an amount of 0.1 to 2 equivalents (molar ratio) to the squarylium compound. It is preferred that
- the solvent examples include halogenated hydrocarbon solvents such as chloroform and dichloromethane, aromatic solvents such as toluene and xylene, ether solvents such as tetrahydrofuran and methyl-tert-butyl ether, and esters such as ethyl acetate.
- halogenated hydrocarbon solvents such as chloroform and dichloromethane
- aromatic solvents such as toluene and xylene
- ether solvents such as tetrahydrofuran and methyl-tert-butyl ether
- esters such as ethyl acetate.
- examples thereof include a system solvent, an alcohol solvent such as methanol and ethanol, and water, and the use amount thereof is preferably 1 to 500 times (weight ratio) the squarylium compound.
- squarylium compound (I) or its metal complex of the present invention Specific examples of the squarylium compound (I) or its metal complex of the present invention are shown in Table 1, but the squarylium compound (I) or its metal complex of the present invention is not limited thereto.
- Me represents a methyl group
- Et represents an ethyl group.
- Organic EL devices are devices in which one or more organic thin films are formed between an anode and a cathode.
- a light emitting layer is provided between an anode and a cathode.
- the light emitting layer contains a light emitting material, and may further contain a hole transporting material or an electron transporting material for transporting holes injected from an anode or electrons injected from a cathode to the light emitting material.
- organic EL elements stacked in a multilayer configuration such as the above, but the configuration of each layer is not particularly limited.
- the squarylium compound (I) or its metal complex has high light-emitting properties, and can be contained as a dopant in a light-emitting material or a light-emitting layer, a hole-transport layer, or an electron-transport layer.
- the content of the squarylium compound (I) or its metal complex is preferably 0.001 to 50% by weight, more preferably 0/01 to 10% by weight, in each layer. preferable.
- the light-emitting layer, hole-transport layer or electron-transport layer if necessary, use a light-emitting material, dopant, hole-transport material or electron-transport material in addition to the squarylium compound (I) or its metal complex. You can also.
- the dopant include: anthracene, naphthylene, phenanthrene, pyrene, tetracene, coronene, chrysene, fluorescein, perylene, phthalocyanine, naphthenic perylene, perinone, phthalocyanine, naphthenic perinone, Diphenylbutadiene, tetraphenylbutadiene, coumarin, oxazine diol, aldazine, bisbenzoxazoline, bisstyryl, pyrazine, cyclopentene, quinoline metal complex, aminoquinoline metal complex Body, imine, diphenylethylene, vinylanthracene, diaminocarbazole, pyran, thiopyran, polymethine, merocyanine, imidazole-chelated oxynoide compound, quinacridone, rubrene and derivatives thereof. Further, the above compounds can also be used as a light emitting of
- the hole transporting material has the ability to transport holes, has an excellent hole injection effect on the light emitting layer or the light emitting material, and has an electron transporting layer or electron transporting of excitons generated in the light emitting layer.
- Compounds that prevent migration to the material and have excellent thin film forming ability can be cited.
- the hole transport material include a phthalocyanine compound, a naphthorosocyanine compound, a porphyrin compound, oxaziazol, triazole, imidazole, imidazolone, imidazoluthione, virazoline, pyrazoline, and tetrahydroquinone.
- Derivatives thereof, and polymer materials such as polyvinyl carbazole, polysilane, and conductive polymers are exemplified.
- the electron transporting material has the ability to transport electrons, has an excellent electron injection effect on the light emitting layer or the light emitting material, and has a hole transporting layer or a hole transporting material for excitons generated in the light emitting layer. Compounds that prevent migration to the surface and have excellent thin film forming ability.
- the electron transporting material include fluorenone, anthraquinodimethane, diphenoquinone, thiovirane dioxide, oxaziazole, thiadiazol, tetrazol, perylenetetracarboxylic acid, fluorenylidenemethane, anthraquinodimethane, And derivatives thereof such as anthrone.
- the conductive material used for the anode those having a work function larger than 4 eV are preferable, such as carbon, aluminum, vanadium, iron, cobalt, nickel, tungsten, silver, gold, platinum, palladium, and the like. Alloy, Metal oxides such as ITO (indium tin oxide) substrate, tin oxide and indium oxide called NESA substrate, and organic conductive resins such as polythiophene and polypyrrole are used.
- conductive material used for the cathode those having a work function of less than 4 eV are preferable, such as aluminum, magnesium, calcium, tin, lead, titanium, yttrium, lithium, ruthenium, manganese, and the like. Alloy or the like is used.
- the anode and the cathode may be formed of two or more layers if necessary.
- the organic EL device of the present invention in order to efficiently emit light, it is preferable that at least one of the anode and the cathode is sufficiently transparent in the emission wavelength region of the device. It is also desirable that the substrate is transparent.
- a method for manufacturing a transparent electrode include a method in which the above-described conductive material is used and set so as to secure a predetermined light-transmitting property by a method such as vapor deposition or sputtering.
- the electrode on the light emitting surface preferably has a light transmittance of 10% or more.
- the substrate preferably has mechanical and thermal strength and is transparent, and examples thereof include a transparent resin such as a glass substrate, a polyethylene substrate, a polyether sulfone plate, and a polypropylene plate.
- each layer of the organic EL element any of a dry film forming method such as vacuum evaporation and sputtering and a wet film forming method such as spin coating and diving can be applied.
- the film thickness is not particularly limited, but is preferably in the range of 5 to 100 nm, more preferably in the range of 10 to 200 nm.
- a material for forming each layer is dissolved or dispersed in an appropriate solvent such as chloroform, tetrahydrofuran, dioxane or the like to form a thin film, but the solvent is not particularly limited.
- a suitable resin or additive may be used to improve film forming properties, prevent pinholes in the film, and the like.
- resins include polystyrene, polycarbonate, polyacrylate, polyester, polyamide, polyurethane, polysulfone, and polymethylmethacrylate. Evening acrylate, polymethyl acrylate, insulating resin such as cellulose, poly
- Photo-conductive resins such as N-vinyl carbazole and polysilane; and conductive resins such as polythiophene and polyvirol.
- the additives include an antioxidant, an ultraviolet absorber, and a plasticizer.
- the organic EL device of the present invention can emit red light in particular.
- the organic EL device of the present invention is used for a flat panel display such as a wall-mounted television, a light source for a copier or a pudding as a flat light emitter, a light source for a liquid crystal display or instruments, a display board, a sign lamp, and the like. be able to.
- IR (KB r) cm— 1 3042, 2976, 2934, 2870, 2804, 1768, 1753, 1707, 1642, 1592, 1562, 1477, 1459, 1418, 1365, 1330, 1301, 1194, 1169, 1137, 993 , 826, 806.
- IR (KB r) cm— 1 3224, 2967, 2927, 2868, 1620, 1594, 1578, 1533, 1516, 1408, 1340, 1316, 1302, 1268, 1194, 1177, 1155, 1115, 1076, 1024, 972, 815, 807.
- IR (KBr) cm— 1 3083, 2967, 2927, 2867, 1747, 1643, 1592, 1540, 1528, 1421, 1392, 1328, 1268, 1191, 1154, 1125, 1114, 1077, 1036, 973, 829 .
- N, N 5 diphenyl-1-N, N, 1-bis (3-methylphenyl) 1-1,1 '—biphenyl-1-4: 4,1-diamine is placed on a glass substrate with a cleaned IT 0 transparent electrode (anode). It was deposited to a thickness of nm to form a hole transport layer. Next, tris (8-quinolinolate) aluminum and compound (1) were co-deposited thereon (weight ratio: 100: 1) to form a light-emitting layer. Next, lithium fluoride was vapor-deposited to a thickness of 0.5 nm, and aluminum was further vapor-deposited thereon to a thickness of 100 nm to form a cathode, thereby obtaining an organic EL device.
- a co-evaporation (weight ratio 100: 1) was performed to a thickness of 5 Onm to obtain a light emitting layer.
- lithium fluoride was deposited to a thickness of 0.5 nm, and aluminum was further deposited thereon to a thickness of 100 nm to form a cathode, thereby obtaining an organic EL device.
- the present invention provides a novel squarylium compound, a metal complex thereof, and an organic EL device capable of emitting red light containing the same.
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- Electroluminescent Light Sources (AREA)
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004521197A JPWO2004007447A1 (ja) | 2002-07-11 | 2003-07-11 | スクアリリウム化合物およびその金属錯体ならびにこれらを含有する有機el素子 |
AU2003252596A AU2003252596A1 (en) | 2002-07-11 | 2003-07-11 | Squarylium compound, metal complex thereof, and organic el element containing these |
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JP2002202277 | 2002-07-11 | ||
JP2002-202277 | 2002-07-11 |
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WO2004007447A1 true WO2004007447A1 (ja) | 2004-01-22 |
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AU (1) | AU2003252596A1 (ja) |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005121127A1 (ja) * | 2004-06-09 | 2005-12-22 | Kyowa Hakko Chemical Co., Ltd. | スクアリリウム化合物ならびにこれを用いた光電変換材料、光電変換素子および光電気化学電池 |
WO2008035554A1 (fr) * | 2006-09-20 | 2008-03-27 | Konica Minolta Holdings, Inc. | Nouveau composé complexe squarylium-métal, colorant et composition, toner de couleur, encre, support d'enregistrement optique, filtre de couleur et filtre avant pour dispositif d'affichage contenant le colorant |
JP2016053005A (ja) * | 2014-09-03 | 2016-04-14 | 日本放送協会 | 有機金属錯体、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、表示装置、照明装置、有機薄膜太陽電池 |
JP2019080078A (ja) * | 2019-02-05 | 2019-05-23 | 日本放送協会 | 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、表示装置、照明装置 |
Citations (1)
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JPH06220438A (ja) * | 1993-01-29 | 1994-08-09 | Toyo Ink Mfg Co Ltd | 有機エレクトロルミネッセンス素子 |
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2003
- 2003-07-11 WO PCT/JP2003/008854 patent/WO2004007447A1/ja active Application Filing
- 2003-07-11 AU AU2003252596A patent/AU2003252596A1/en not_active Abandoned
- 2003-07-11 JP JP2004521197A patent/JPWO2004007447A1/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06220438A (ja) * | 1993-01-29 | 1994-08-09 | Toyo Ink Mfg Co Ltd | 有機エレクトロルミネッセンス素子 |
Non-Patent Citations (1)
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KEIL DIETMAR; HARTMAN HORST: "Synthesis and characterization of a new class of unsymmetrical squaraine dyes", DYES AND PIGMENTS, vol. 49, no. 3, 2001, pages 161 - 179, XP004245041 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005121127A1 (ja) * | 2004-06-09 | 2005-12-22 | Kyowa Hakko Chemical Co., Ltd. | スクアリリウム化合物ならびにこれを用いた光電変換材料、光電変換素子および光電気化学電池 |
WO2008035554A1 (fr) * | 2006-09-20 | 2008-03-27 | Konica Minolta Holdings, Inc. | Nouveau composé complexe squarylium-métal, colorant et composition, toner de couleur, encre, support d'enregistrement optique, filtre de couleur et filtre avant pour dispositif d'affichage contenant le colorant |
JP5250837B2 (ja) * | 2006-09-20 | 2013-07-31 | コニカミノルタ株式会社 | 新規なスクアリリウム金属錯体化合物、色素及びこれを含有する組成物、カラートナー、インク、光記録媒体、カラーフィルター及びディスプレイ用前面フィルター |
JP2016053005A (ja) * | 2014-09-03 | 2016-04-14 | 日本放送協会 | 有機金属錯体、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、表示装置、照明装置、有機薄膜太陽電池 |
JP2019080078A (ja) * | 2019-02-05 | 2019-05-23 | 日本放送協会 | 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、表示装置、照明装置 |
Also Published As
Publication number | Publication date |
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JPWO2004007447A1 (ja) | 2005-11-10 |
AU2003252596A1 (en) | 2004-02-02 |
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