WO2007060795A1 - アミン系化合物及びそれを利用した有機エレクトロルミネッセンス素子 - Google Patents
アミン系化合物及びそれを利用した有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2007060795A1 WO2007060795A1 PCT/JP2006/320621 JP2006320621W WO2007060795A1 WO 2007060795 A1 WO2007060795 A1 WO 2007060795A1 JP 2006320621 W JP2006320621 W JP 2006320621W WO 2007060795 A1 WO2007060795 A1 WO 2007060795A1
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- -1 Amine compound Chemical class 0.000 title claims abstract description 133
- 238000002347 injection Methods 0.000 claims abstract description 78
- 239000007924 injection Substances 0.000 claims abstract description 78
- 239000000463 material Substances 0.000 claims abstract description 67
- 239000010409 thin film Substances 0.000 claims abstract description 22
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 200
- 125000003118 aryl group Chemical group 0.000 claims description 78
- 125000000217 alkyl group Chemical group 0.000 claims description 46
- 239000000126 substance Substances 0.000 claims description 39
- 125000003545 alkoxy group Chemical group 0.000 claims description 35
- 125000004104 aryloxy group Chemical group 0.000 claims description 28
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 28
- 230000005525 hole transport Effects 0.000 claims description 26
- 125000000623 heterocyclic group Chemical group 0.000 claims description 24
- 125000003277 amino group Chemical group 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 20
- 125000003342 alkenyl group Chemical group 0.000 claims description 18
- 150000001721 carbon Chemical class 0.000 claims description 15
- 125000005843 halogen group Chemical group 0.000 claims description 13
- 150000001412 amines Chemical class 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 12
- 239000002019 doping agent Substances 0.000 claims description 11
- 125000005309 thioalkoxy group Chemical group 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 125000005296 thioaryloxy group Chemical group 0.000 claims description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 7
- 125000003107 substituted aryl group Chemical group 0.000 claims description 5
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- 238000005401 electroluminescence Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 164
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- 239000000543 intermediate Substances 0.000 description 13
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- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
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- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 7
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- UWRZIZXBOLBCON-VOTSOKGWSA-N (e)-2-phenylethenamine Chemical class N\C=C\C1=CC=CC=C1 UWRZIZXBOLBCON-VOTSOKGWSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
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- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 5
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 5
- 150000004982 aromatic amines Chemical class 0.000 description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 5
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- 239000012044 organic layer Substances 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical class C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 5
- 238000005215 recombination Methods 0.000 description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 4
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 4
- 229910001508 alkali metal halide Inorganic materials 0.000 description 4
- 150000008045 alkali metal halides Chemical class 0.000 description 4
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 4
- 125000004429 atom Chemical group 0.000 description 4
- 125000000753 cycloalkyl group Chemical group 0.000 description 4
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 4
- 125000001072 heteroaryl group Chemical group 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 4
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 125000003282 alkyl amino group Chemical group 0.000 description 3
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- 230000007547 defect Effects 0.000 description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
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- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 150000002484 inorganic compounds Chemical class 0.000 description 3
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- AICOOMRHRUFYCM-ZRRPKQBOSA-N oxazine, 1 Chemical compound C([C@@H]1[C@H](C(C[C@]2(C)[C@@H]([C@H](C)N(C)C)[C@H](O)C[C@]21C)=O)CC1=CC2)C[C@H]1[C@@]1(C)[C@H]2N=C(C(C)C)OC1 AICOOMRHRUFYCM-ZRRPKQBOSA-N 0.000 description 3
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- VERMWGQSKPXSPZ-BUHFOSPRSA-N 1-[(e)-2-phenylethenyl]anthracene Chemical class C=1C=CC2=CC3=CC=CC=C3C=C2C=1\C=C\C1=CC=CC=C1 VERMWGQSKPXSPZ-BUHFOSPRSA-N 0.000 description 2
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 2
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Chemical compound C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 description 2
- 239000005725 8-Hydroxyquinoline Substances 0.000 description 2
- YYVYAPXYZVYDHN-UHFFFAOYSA-N 9,10-phenanthroquinone Chemical compound C1=CC=C2C(=O)C(=O)C3=CC=CC=C3C2=C1 YYVYAPXYZVYDHN-UHFFFAOYSA-N 0.000 description 2
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000284156 Clerodendrum quadriloculare Species 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- LFZAGIJXANFPFN-UHFFFAOYSA-N N-[3-[4-(3-methyl-5-propan-2-yl-1,2,4-triazol-4-yl)piperidin-1-yl]-1-thiophen-2-ylpropyl]acetamide Chemical compound C(C)(C)C1=NN=C(N1C1CCN(CC1)CCC(C=1SC=CC=1)NC(C)=O)C LFZAGIJXANFPFN-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
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- 125000004054 acenaphthylenyl group Chemical group C1(=CC2=CC=CC3=CC=CC1=C23)* 0.000 description 2
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- XSCHRSMBECNVNS-UHFFFAOYSA-N benzopyrazine Natural products N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 2
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- IYYZUPMFVPLQIF-UHFFFAOYSA-N dibenzothiophene Chemical compound C1=CC=C2C3=CC=CC=C3SC2=C1 IYYZUPMFVPLQIF-UHFFFAOYSA-N 0.000 description 2
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- 238000001308 synthesis method Methods 0.000 description 2
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- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 238000010898 silica gel chromatography Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 125000005346 substituted cycloalkyl group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 125000004354 sulfur functional group Chemical group 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M thiocyanate group Chemical group [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- JFLKFZNIIQFQBS-FNCQTZNRSA-N trans,trans-1,4-Diphenyl-1,3-butadiene Chemical group C=1C=CC=CC=1\C=C\C=C\C1=CC=CC=C1 JFLKFZNIIQFQBS-FNCQTZNRSA-N 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 125000004784 trichloromethoxy group Chemical group ClC(O*)(Cl)Cl 0.000 description 1
- 125000003866 trichloromethyl group Chemical group ClC(Cl)(Cl)* 0.000 description 1
- 125000003652 trifluoroethoxy group Chemical group FC(CO*)(F)F 0.000 description 1
- 125000002023 trifluoromethyl group Chemical class FC(F)(F)* 0.000 description 1
- ODHXBMXNKOYIBV-UHFFFAOYSA-N triphenylamine Chemical compound C1=CC=CC=C1N(C=1C=CC=CC=1)C1=CC=CC=C1 ODHXBMXNKOYIBV-UHFFFAOYSA-N 0.000 description 1
- 229930195735 unsaturated hydrocarbon Natural products 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 150000003738 xylenes Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
- C07D241/36—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems
- C07D241/38—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems with only hydrogen or carbon atoms directly attached to the ring nitrogen atoms
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- 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
-
- 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
- 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
- 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
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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
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
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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
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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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
- H10K85/631—Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
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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
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
- H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1007—Non-condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1011—Condensed systems
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/10—Non-macromolecular compounds
- C09K2211/1003—Carbocyclic compounds
- C09K2211/1014—Carbocyclic compounds bridged by heteroatoms, e.g. N, P, Si or B
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/17—Carrier injection layers
Definitions
- the present invention relates to an amine compound and an organic electoluminescence device using the same, and more specifically, light emission while maintaining good luminance Z voltage characteristics and current density Z voltage characteristics with high heat resistance.
- the present invention relates to an organic electoluminescence device having a high efficiency and a long lifetime, and an amine compound that realizes the same.
- Organic electoluminescence (EL) devices use the principle that a fluorescent substance emits light by recombination energy of holes injected from an anode and electrons injected from a cathode by applying an electric field. Since it has high visibility due to self-emission and is a complete solid-state device, it has features such as excellent impact properties. Therefore, its use as a light-emitting device in various display devices has attracted attention.
- EL electroluminescence
- the organic EL device has a two-layer structure of a hole transport (injection) layer and an electron transport luminescent layer, or a hole transport (injection) layer, a luminescent layer, and an electron transport (injection) layer.
- the three-layer type is well known.
- the element structure and the formation method are devised.
- a hole injection material used in such an organic EL device a high molecular weight aromatic amine compound disclosed in Patent Document 1 and a triarylamine compound disclosed in Patent Document 2 are used.
- a isomer or a phenylenediamine derivative disclosed in Patent Document 3 is known. Since these compounds have low ionic potential, the hole mobility is higher than that of a starburst amine derivative as disclosed in Patent Document 4 when holes are injected from the anode. Therefore, it was suitable as a hole injection material with a high value.
- the materials used for organic EL devices include low-molecular-weight organic materials that produce devices by vacuum deposition, and high-molecular-weight organic materials that have a state-of-the-art coating method (such as spin coating or ink jet). Broadly divided into materials.
- the polymer material used here is not necessarily required to be a polymer. In general, what is called a low molecular weight amorphous material is attracting attention as long as it forms an amorphous state at the operating temperature.
- Examples of known low-molecular hole injection / transport materials include the following specific compounds.
- TPD is widely used because it has a small ionization potential of 5.4 eV and high hole mobility.
- the following exemplary compounds have problems such as crystallization and non-uniform film formation over a long period of time even under room temperature conditions where the heat resistance (glass transition temperature, Tg) is low.
- Tg is about 98.
- a so-called conductive polymer such as polythiophene or polyarine is doped with an acid such as PSS having the following structure. Injectability can be improved.
- Polymeric hole injection / transport materials incorporating the TPD in the main chain or side chain have also been studied!
- organic EL devices using polymer materials unlike vacuum evaporation, are formed without vacuum, so it is expected that a high-quality thin film can be easily formed. Expected to be advantageous.
- PEDOTZPSS with the structure shown below is water-soluble and insoluble in organic solvents, so it has excellent power as a hole injection layer. There are concerns about the adverse effects of oxygen and sulfur atoms generated by decomposition.
- Patent Document 5 describes a light emitting material for an organic EL device comprising a compound having a quinoxaline skeleton, but its heat resistance with a low glass transition temperature is not sufficient.
- Patent Document 1 Japanese Patent Laid-Open No. 9-301934
- Patent Document 2 International Publication WO98Z30071
- Patent Document 3 Japanese Patent Laid-Open No. 2000-309566
- Patent Document 4 Japanese Patent Laid-Open No. 4308688
- Patent Document 5 Japanese Unexamined Patent Publication No. 2000-053956
- the present invention has been made to solve the above-described problems, and is excellent in a physical property balance of low, ionic potential, large band gap energy, high injection efficiency, and high mobility, and excellent in heat resistance.
- Luminance Z voltage characteristics, current density While maintaining the Z voltage characteristics, includes a long-life organic EL element with high luminous efficiency and a quinoxaline ring that realizes it
- An object is to provide a novel amine compound.
- the present invention provides an amine compound having a quinoxaline ring represented by the following general formula (1).
- X is independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, substituted or unsubstituted.
- Y is each independently a substituted or unsubstituted aryl group having 4 to 50 carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 carbon atoms, and two Y bonded to the same nitrogen atom. May be the same or different! /, And may be bonded and cross-linked together!
- z is independently a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, or a substituted or unsubstituted carbon number.
- the present invention provides an organic EL device in which an organic thin film layer having at least one light-emitting layer or a multi-layer force is sandwiched between a cathode and an anode, and at least one layer force of the organic thin film layer.
- the quinoxaline ring The present invention provides an organic EL device containing an amine-based compound containing or as a component of a mixture.
- the amine compound of the present invention is useful as a hole injection material or a hole transport material of an organic EL device or an electrophotographic photoreceptor, and the organic EL device using the amine compound of the present invention has low ionization. Excellent luminance balance with potential, large band gap energy, high injection efficiency, high mobility, high heat resistance, good brightness Z voltage characteristics, current density long.
- the amine compound of the present invention is represented by the following general formula (1).
- each X is independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, or a substituted group.
- an unsubstituted aryloxy group having 4 to 50 carbon atoms a substituted or unsubstituted thioalkoxy group having 1 to 50 carbon atoms
- a substituted or unsubstituted thioaryloxy group having 4 to 50 carbon atoms and a substituted or unsubstituted amino group.
- two Xs may be the same or different. At least one X is any of the above groups other than a hydrogen atom, and the two Xs cross-link with each other. An annular structure is formed.
- Examples of the cyclic structure formed by the two X include, for example, cycloalkene having 4 to 12 carbon atoms such as cyclobutene, cyclopentene, cyclohexene, cycloheptene, and cyclootaten, cyclohexene, cyclobutadiene, cyclooctagen, and the like.
- Containing 6 to 12 carbon rings such as cycloalkylene diene having 6 to 12 carbon atoms, benzene, naphthalene, phenanthrene, anthracene, pyrene, taricene, and acenaphthylene, and aromatic rings having 6 to 50 carbon atoms such as indene and fluorene.
- aromatic rings having 6 to 50 carbon atoms such as indene and fluorene.
- aromatic rings having 6 to 50 carbon atoms such as benzene, naphthalene, phenanthrene, anthracene, pyrene, taricene, and acenaphthylene are preferred because of their high mobility. Therefore, the aromatic ring force S having 6 to 15 carbon atoms is more preferable.
- a cyclic structure for example, the following general formula (3) can be mentioned.
- X is a hydrogen atom and a naphthyl group, these are cross-linked with each other to form the following general formula (3).
- the bond structure of the described naphthalene ring and quinoxaline ring is formed.
- each Y is independently a substituted or unsubstituted aryl group having 4 to 50 carbon atoms, or a substituted or unsubstituted heterocyclic group having 5 to 50 carbon atoms.
- nitrogen The two Y bonded to the atom may be the same or different, and may be bonded to each other and bridged.
- Examples of the cyclic structure that may be formed by bonding and crosslinking two ridges include the basic skeleton shown below or a substituted product thereof.
- the following structures are preferable. This is because the following force rubazole structure is excellent in electron transport properties, and other structures are excellent in hole injection property or hole transport property because ion potential levels can be lowered by cutting conjugation. .
- each Z independently represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, or a substituted or unsubstituted carbon group having 1 to 50 carbon atoms.
- the two Zs may be the same or different and may be bonded to each other and cross-linked.
- Examples of the cyclic structure that may be formed by bonding and cross-linking two Zs include the same examples as the cyclic structure formed by the two Xs described above.
- the amine compound represented by the general formula (1) has high mobility, is easy to deposit, and is easy to obtain and synthesize, and has good molecular symmetry.
- Preferred is an amine compound represented by the following general formula (2) or (3).
- R 9 ⁇ R 14 of Ri ⁇ R 8 and of the general formula (2) (3) are each independently a hydrogen atom, C androgenic atom, a substituted or unsubstituted alkyl having 1 to 50 carbon atoms Group, substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, substituted or unsubstituted aryloxy group having 4 to 50 carbon atoms, substituted or unsubstituted thioalkoxy group having 1 to 50 carbon atoms, substituted or unsubstituted Substituted thioaryloxy group having 4 to 50 carbon atoms, substituted or unsubstituted amino group, substituted or unsubstituted aryl group having 4 to 50 carbon atoms, substituted or unsubstituted alkenyl having 2 to 50 carbon atoms -Group, a substituted or unsubstituted alkyl carboxylic group having 1 to 50 carbon atoms, or a substituted or unsubstit
- aryl group of Y include, for example, a phenyl group or various tolyl groups, various substituted phenyl groups such as various xylyl groups, 1 naphthyl group or various methyl substituted 1 naphthyl groups, various dimethyl substituted 1 naphthyl groups, etc.
- Substituents for these groups are not limited to hydrocarbon groups, but also include groups containing heteroatoms such as alkoxy groups, carboxy groups, carboxyester groups, aryloxy groups, dialkylamino groups, diarylamino groups, and thioalkoxy groups. Including.
- the atoms forming the nucleus are not limited to carbon, such as oxygen atoms (furyl group, etc.), nitrogen atoms (pyridyl group, pyraryl group, etc.), boron atoms (boraphthal group, etc.), and silicon atoms. (Including shirafu-zole group) and hetero atoms such as thio atom (thiofull group etc.).
- the heterocyclic group of ⁇ includes, for example, a pyridinyl group, a birazinyl group, a pyrimidinyl group, a pyridazinyl group, a triazinyl group, an indolyl group, a quinolinyl group, an attaridyl group, a pyrrolidyl group, a dioxanyl group, Piberidyl, morpholyl, piperazinyl, triatinyl, carbazolyl, furanyl, thiophenyl, oxazolyl, oxadiazolyl, benzoxazolyl, thiazolyl, thiadiazolyl, benzothiazolyl, Examples thereof include a triazolyl group, an imidazolyl group, a benzimidazolyl group, a branyl group, and the like, and each of these groups may have a substituent, and the same substituents as those
- halogen atom ⁇ and 1-4 for example, fluorine, chlorine, bromine, iodine can be mentioned up.
- alkyl groups include methyl, ethyl, propyl, isopyl, n-butyl, s-butyl, isobutyl, t-butyl, and n-pentyl. N-hexyl group, n-heptyl group, n-octyl group and the like.
- the aryl group of X, Z and Ri to R “includes a phenyl group or various tolyl groups, various substituted phenyl groups such as various xylyl groups, 1 naphthyl group, various methyl substituted 1 naphthyl group, various dimethyl substituted 1 Substitution of naphthyl group, etc.
- 1 Naphthyl group, 2-naphthyl group V ⁇ is various methyl substituted 2-naphthyl groups, various dimethyl substituted 2-naphthyl groups, etc.
- alkoxy group of X, Z and Ri to R is represented as RO, and examples of R include the examples described for the alkyl group.
- the aryloxy group of X, Z and Ri ⁇ R ′′ is represented as R ′ O, and examples of R ′ include the examples described for the aryl group.
- Examples of the thioalkoxy group of X, Z and Ri to R ′′ include groups corresponding to the examples described for the alkoxy group.
- X as a thioaryloxy O alkoxy group Z and Ri ⁇ R 14, include groups that correspond to the examples described in the Ariruokishi group.
- Examples of the amino group of X, Z and Ri to R ′′ include a diphenylamino group, a ditolylamino group, a dinaphthylamino group, a naphthylphenylamino group, a dimethylamino group, a jetylamino group, a dihexylamino group and the like.
- X the alkenyl groups Z and 1-4, for example, vinyl group, Ariru group, 1 butene - group, 2 Buteyuru group, 3 Buteyuru group, 1, 3 Butanje - group, 1 Mechirubi - Le Group, styryl group, 2, 2-diphenyl group, 1,2-diphenyl group, 1-methyl group, 1,1-dimethyl group, 2-methyl group, 1-phenyl group, Examples include 2-phenylyl group, 3-phenolyl group, 3,3-diphenylyl group, 1,2-dimethylaryl group, 1-loop 1-tuttle group, 3-loop 1-tuttle group, and the like.
- the alkyl carbonyl group of X, Z, and Ri to R ′′ is represented as RCO—, and examples of R include the examples described for the alkyl group.
- the aryl group of X, Z and Ri to R ′′ is represented as R′CO—, and examples of R ′ include the examples described for the aryl group.
- each group examples include a substituted or unsubstituted aryl group having 5 to 50 nuclear carbon atoms, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, and a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms.
- substituted or unsubstituted aralkyl group having 6 to 50 nuclear carbon atoms substituted or unsubstituted aryloxy group having 5 to 50 nuclear carbon atoms
- substituted or unsubstituted aryloxy group having 5 to 50 nuclear carbon atoms substituted or unsubstituted Examples of the substituted alkoxycarbonyl group having 1 to 50 carbon atoms, amino group, halogen atom, cyano group, nitro group, hydroxyl group, and carboxyl group.
- the amine compound of the present invention can be produced by utilizing a known reaction (reference literature: for example, Journal of Organic Synthetic Chemistry No. 59, No. 6, 2001, p607). Less than Below, the ability to exemplify the synthesis methods [1] to [2] of representative compound groups is not limited to these.
- N is a nitrogen atom
- X, Y, and Z are as described above.
- A is a halogen atom, preferably iodine, bromine or chlorine, more preferably bromine.
- the transition metal catalyst is a transition metal compound containing a Group 8, 9 or 10 metal, preferably a transition metal compound containing a Group 10 metal, and more preferably a transition metal compound containing palladium.
- PdCl Pd (OAc) (Ac is a acetyl group)
- Pd (OAc) is a acetyl group)
- DPPF 1, 1, 1 bis (diphenylphosphino) Huesen
- a ligand is a compound of Group 15 or Group 16, preferably a compound containing Group 15, more preferably a compound containing phosphorus.
- PAr Ar is an aryl group
- 3 3 3 3 is an alkyl group
- PCy Cy is a cyclohexyl group
- P (tBu) tBu is a t-butyl group
- the base can be used as long as it is a compound composed of an alkali metal and a conjugated base, or an alkaline earth metal and a conjugated base, which dissociates the hydrogen of the amine to be reacted as a proton.
- it is a symbiotic base of a basic compound having an acid dissociation constant (25 ° C, in water) of 18 or more.
- magnesium is preferred as the alkaline earth metal, preferably lithium or sodium.
- Examples of the conjugate base of a basic compound having an acid dissociation constant (25 ° C, in water) of 18 or more include -N (SiR;), -NR, -OR (R is an alkyl group), etc. , Preferably-N (SiMe) (Me
- 3 2 2 3 2 is a methyl group), -N (isopropyl), -OtBu.
- the solvent is not particularly limited as long as the transition metal compound, ligand (ligand) or base does not react, but an aromatic solvent such as xylenes and toluene is preferable.
- the reaction temperature is not particularly limited, but is usually room temperature to 200 ° C. or the boiling point of the solvent, preferably room temperature to 120 ° C.
- the reaction time is not particularly limited, but is usually 1 hour to 150 hours, preferably 3 hours to 1 00 hours.
- reaction ratio is not particularly limited, it is usually quinoxaline compound: amine: transition metal compound: ligand: base (molar ratio), 100: 180 to 300: 0.1 to 10: 0.1 to 40: 150 to 300 Preferably, it is 100: 190-220: 0.5-5: 1: 1-10: 180-250.
- the concentration of the reaction solution is not particularly limited, but is usually 0.01 to 2 mol Z liter, preferably 0.1 to 0.2 mol Z liter, as the concentration of the quinoxaline compound.
- the amine-based compound of the present invention is suitable for a hole injection material or a hole transport material, and can be applied in a wide range of fields as a solar cell, an electrophotographic photosensitive member, and an organic EL device, particularly for an organic EL device. Suitable as hole injection material or hole transport material.
- the organic EL device of the present invention is an organic EL device in which an organic thin film layer consisting of one or more layers including at least a light emitting layer is sandwiched between a cathode and an anode. Further, the organic thin film layer has a hole injection layer and / or a hole transport layer, and the hole injection layer and Z or the hole transport layer include The amine compound of the present invention is preferably contained alone or as a component of a mixture.
- the force for which the configuration of (8) is preferably used is not limited to these.
- the amine-based compound of the present invention may be used in any of the organic layers described above, but it is preferable that it is contained in the light emission band or hole transport band in these components, and it is particularly preferable. Is contained in the hole injection layer !. It is preferable for the emission band because it is excellent as a host material, and preferable for the hole transport band because it is excellent as a material for a hole injection layer or a hole transport layer, and particularly as a material for a hole injection layer. is there.
- the light emitting layer may be a single layer or a plurality of layers.
- the luminous efficiency is increased when the amine compound of the present invention is contained in 30 to LOO mol%.
- This organic EL element is usually produced on a translucent substrate.
- This translucent substrate is a substrate that supports the organic EL element.
- the transmissivity of light in the visible region of 400 to 700 nm is 50% or more, and a smoother substrate is desired. It is preferable to use it.
- a translucent substrate for example, a glass plate, a synthetic resin plate, or the like is preferably used.
- the glass plate include soda lime glass, norlium strontium-containing glass, lead glass, aluminosilicate glass, borosilicate glass, norium borosilicate glass, and quartz.
- the synthetic resin plate include polycarbonate resin, acrylic resin, polyethylene terephthalate resin, polyether sulfide resin, and polysulfone resin.
- the anode plays a role of injecting holes into the hole transport layer or the light emitting layer, and it is effective to have a work function of 4.5 eV or more.
- Specific examples of the anode material used in the present invention include indium tin oxide alloy (ITO), indium zinc alloy (IZO), tin oxide (NESA), gold, silver, platinum, copper and the like.
- an electron transport layer or Is preferably a material having a low work function for the purpose of injecting electrons into the light emitting layer.
- the anode can be produced by forming a thin film from these electrode materials by a method such as vapor deposition or sputtering.
- the transmittance of the anode for light emission is greater than 10%.
- the sheet resistance of the anode is preferably several hundred ⁇ or less.
- the film thickness of the anode is a force depending on the material. Usually, it is selected in the range of 10 nm to l ⁇ m, preferably 10 to 200 nm.
- the light emitting layer is
- Injection function function that can inject holes from the anode or hole injection layer when an electric field is applied, and can inject electrons from the negative electrode or electron injection layer
- Transport function Function to move injected charges (electrons and holes) by the force of electric field
- Luminescent function It has a function to provide a field for recombination of electrons and holes and connect it to light emission. However, even if there is a difference in the ease with which holes are injected and the ease with which electrons are injected, the transport capability represented by the mobility of holes and electrons may be large or small. It is preferable to move the charge ⁇ .
- the light emitting layer As a method for forming the light emitting layer, for example, a known method such as an evaporation method, a spin coating method, or an LB method can be applied.
- the light emitting layer is particularly preferably a molecular deposited film.
- the molecular deposition film is a thin film formed by deposition from a material compound in a gas phase state or a film formed by solidification from a material compound in a solution state or a liquid phase state.
- a film can be classified from a thin film (accumulated film) formed by the LB method by the difference in aggregated structure and higher-order structure and functional differences resulting from it.
- a binder such as rosin and a material compound are dissolved in a solvent to form a solution, which is then thin-filmed by spin coating or the like.
- the light emitting layer can also be formed by twisting.
- a known light emitting material other than the light emitting material comprising the amine compound of the present invention may be included in the light emitting layer as desired.
- a light emitting layer containing another known light emitting material may be stacked on the light emitting layer containing any other light emitting material. Yes.
- the light emitting layer is a layer emitting blue light, and the light emitting layer preferably has a maximum light emission wavelength of 450 to 500 nm. Preferably it consists of a punt. This is because the amine compound power ionization potential level and the energy gap value of the present invention are suitable for, for example, blue light emission as a material for the hole injection layer.
- a styryl derivative As the host material in the light emitting layer, a styryl derivative, an arylene derivative, or an aromatic ammine (an amine derivative) is preferable. This is because, from the values of the ion potential level and the energy gap, it is suitable for blue light emission as a host material, for example.
- the styryl derivative since it emits light in a blue region, it is particularly preferable that it is at least one selected from a distyryl derivative, a tristyryl derivative, a tetrastyryl derivative, and a styrylamine derivative.
- the arylene derivative is particularly preferably an anthracene derivative, particularly a compound having an arylanthracene skeleton because it emits light in a blue region.
- the aromatic amine since it emits light in the blue region, it is preferably a compound having 2 to 4 aromatic substituted nitrogen atoms, preferably 2 to 4 aromatic substituted nitrogen atoms, A compound having at least one alkenyl group is particularly preferred.
- Examples of the styryl derivative and anthracene derivative include compounds represented by the following general formulas [1] to [6].
- Examples of the aromatic amine include the following general formulas [7] to [8]. And the compounds shown.
- Ri to R 8 are each independently a hydrogen atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted carbon number.
- a heterocyclic group having 5 to 30 carbon atoms, Ar 1 and Ar 2 are each independently a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted alkenyl group, As the substituent, a substituted or unsubstituted carbon number of 1 to 2 0 alkyl groups, substituted or unsubstituted alkoxy groups having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy groups having 6 to 30 carbon atoms, substituted or unsubstituted alkylthio groups having 1 to 20 carbon atoms, substituted or Unsubstituted aryl group having 6 to 30 carbon atoms, substituted or unsubstituted aryl group having 6 to 30 carbon atoms, unsubstituted monocyclic group having 5 to 30 carbon atoms, substituted or unsubstituted carbon atoms 10 to 10 30 condensed polycyclic groups or substituted or unsub
- Ar 1 and Ar 2 are each independently a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted alkenyl group, and the substituent includes a substituted or unsubstituted carbon number.
- alkyl group having 1 to 20 carbon atoms a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 20 carbon atoms, Substituted or unsubstituted aryl group with 6 to 30 carbon atoms, substituted or unsubstituted aryl group with 6 to 30 carbon atoms, unsubstituted monocyclic group with 5 to 30 carbon atoms, substituted or unsubstituted carbon number A condensed polycyclic group having 10 to 30 or a substituted or unsubstituted heterocyclic group having 5 to 30 carbon atoms. )
- ⁇ 1 to! ⁇ are each independently a hydrogen atom, halogen atom, cyano group, nitro group, substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, substituted or unsubstituted An alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylthio group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 30 carbon atoms; Group, substituted or unsubstituted aryl group having 7 to 30 carbon atoms, unsubstituted monocyclic group having 5 to 30 carbon atoms, substituted or unsubstituted condensed polycyclic group having 10 to 30 carbon atoms, or substituted or unsubstituted A substituted heterocyclic group having 5 to 30 carbon atoms Ar 3
- substituted or unsubstituted carbon number 1 20 alkyl group a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted Substituted aryloxy group having 6 to 30 carbon atoms, substituted or unsubstituted alkylthio group having 1 to 20 carbon atoms, substituted or unsubstituted arylenethio group having 6 to 30 carbon atoms, substituted or unsubstituted carbon number 6 to 30
- n is 1 to 3
- Ri to R 8 each independently represents a hydrogen atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or a substituted or unsubstituted carbon number.
- a heterocyclic group having 5 to 30 carbon atoms, Ar 3 and Ar 4 are each independently a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted alkenyl group, As the substituent, a substituted or unsubstituted carbon number of 1 to 2 0 alkyl groups, substituted or unsubstituted alkoxy groups having 1 to 20 carbon atoms, substituted or unsubstituted aryloxy groups having 6 to 30 carbon atoms, substituted or unsubstituted alkylthio groups having 1 to 20 carbon atoms, substituted or Unsubstituted aryl group having 6 to 30 carbon atoms, substituted or unsubstituted aryl group having 6 to 30 carbon atoms, unsubstituted monocyclic group having 5 to 30 carbon atoms, substituted or unsubstituted carbon atoms 10 to 10 30 condensed polycyclic groups, substituted or unsub
- R u to! ⁇ Each independently represents a hydrogen atom, an alkenyl group, an alkyl group, a cycloalkyl group, an aryl group, an alkoxyl group, an aryloxy group, an alkylamino group, an arylamino group) Or a heterocyclic group which may be substituted; a and b each represent an integer of 1 to 5, and when they are 2 or more, R 11 or R 12 may be the same or different from each other; Alternatively, R 11 or R 12 may be bonded to each other to form a ring, R 13 and R ", R 15 and R 16 , R 17 and R 18 , R 19 and R 2 ° may be bonded to each other to form a ring L 1 is a single bond or —O—, —S—, —N (R) — (R is an alkyl group or an optionally substituted aryl) Group) or arylene group.
- R 21 to R 3 ° are independently a hydrogen atom, an alkyl group, an alkyl group, a cycloalkyl group, an aryl group, an alkoxyl group, an aryloxy group, an alkylamino group, an alkyl group, Ruamino represents a group or a substitutable a heterocyclic group which may, c, d, e and f are each an integer of 1 to 5; when they are 2 or more, R 21 together, R 22 together, R 26 s or R 27 together are in each Yogumata be the same or different, R 21 together, R 22 together, R 26 s or R 27 s may be bonded to each other to form a ring, R 23 and R 24 , R 28 and R 29 may be bonded to each other to form a ring.
- L 2 represents a single bond, —O—, —S—, —N (R) — (R is an alkyl group or an aryl group which may be substituted)
- Ar 5 , Ar 6 and Ar 7 each independently represent a substituted or monovalent aromatic group or styryl group having 6 to 40 carbon atoms, and g represents an integer of 1 to 4.
- the dopant in the light emitting layer may be at least one selected from amine derivatives such as styrylamine and amine-substituted styryl compounds and condensed aromatic ring-containing compounds.
- Preferred examples of the styrylamine and amine-substituted styryl compound include compounds represented by the following general formulas [9] to [10], and examples of the condensed aromatic ring-containing compound include: And a compound represented by the following general formula [11] And the like. [0054] [Chemical 23]
- Ar 5 , Ar 6 and Ar 7 each independently represent a substituted or unsubstituted aromatic group or styryl group having 6 to 40 carbon atoms, and p represents an integer of 1 to 3.
- Ar 15 and Ar 16 are each independently an arylene group having 6 to 30 carbon atoms
- E 1 and E 2 are each independently an aryl group or alkyl group having 6 to 30 carbon atoms
- q represents an integer of 1 to 3.
- U, Z or V is a substituent containing an amino group, and the amino group is preferably an aryl amino group.
- A is an alkyl or alkoxy group having 1 to 16 carbon atoms, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylamino group having 6 to 30 carbon atoms, or carbon.
- a substituted or unsubstituted arylene amino group having 6 to 30 carbon atoms B represents a condensed aromatic ring group having 10 to 40 carbon atoms, and r represents an integer of 1 to 4.
- a phosphorescent compound can also be used as the light emitting layer.
- a compound containing a force rubazole ring is preferred as a host material having a phosphorescent compound power.
- a host material suitable for phosphorescence emission that also has a compound power containing a strong rubazole ring is a compound that has the function of causing the phosphorescence emission compound to emit light as a result of energy transfer from its excited state to the phosphorescence emission compound. is there.
- exciton energy is Any compound that can transfer energy to the phosphorescent compound can be appropriately selected depending on the purpose. It may have an arbitrary heterocyclic ring in addition to the strong rubazole ring.
- host compounds include force rubazole derivatives, triazole derivatives, oxazole derivatives, oxaziazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives, pyrazolone derivatives, furendylene amine derivatives, arylamine derivatives, amino substituted Chalcone derivatives, styrylanthracene derivatives, fluorenone derivatives, hydrazone derivatives, stilbene derivatives, silazane derivatives, aromatic tertiary amine compounds, styrylamine compounds, aromatic dimethylidene compounds, porphyrin compounds, anthraquinodimethane derivatives, Anthrone derivatives, diphenylquinone derivatives, thiobilane dioxide derivatives, carpositimide derivatives, fluorenylidenemethane derivatives, distyrylvirazine derivatives, naphtha Metal complexes of heterocyclic tetracarboxylic anhydrides
- Examples of such host compounds include the following.
- the dopant composed of a phosphorescent compound is not particularly limited as long as it emits triplet exciton power, preferably a compound capable of emitting triplet exciton power, but Ir, Ru, Pd, Pt, Os and Re
- the porphyrin metal complex is preferably a porphyrin platinum complex.
- Phosphorescent compounds can be used alone or in combination of two or more.
- ligands that form ortho-metal ⁇ metal complexes
- preferred ligands include 2 phenyl pyridine derivatives, 7, 8 benzoquinoline derivatives, 2- (2 chalc) pyridine derivatives, Examples include 2- (1 naphthyl) pyridine derivatives and 2-phenol quinolin derivatives. These derivatives may have a substituent as necessary. In particular, fluorinated compounds and trifluoromethyl groups introduced are preferred as blue dopants. Furthermore, it may have a ligand other than the above ligands such as acetylacetonate and picric acid as an auxiliary ligand.
- the content of the phosphorescent dopant in the light-emitting layer is not particularly limited, and can be appropriately selected according to the purpose.
- the content is 0.1 to 70% by mass, and 1 to 30% by mass. preferable. If the phosphorescent emissive compound content is less than 0.1% by mass, the light emission is weak and the effect of the content is not fully exhibited. If the content exceeds 70% by mass, a phenomenon called concentration quenching is prominent. The device performance deteriorates.
- the light emitting layer may contain a hole transport material, an electron transport material, and a polymer binder as necessary.
- the thickness of the light emitting layer is preferably 5 to 50 nm, more preferably 7 to 50 nm, and most preferably 10 to 50 nm. If it is 5 nm or more, formation of the light emitting layer and adjustment of chromaticity are easy, and if it is 50 nm or less, there is no fear that the drive voltage will increase.
- the hole injecting / transporting layer is a layer that helps injecting holes into the light emitting layer and transports them to the light emitting region, and has a large hole mobility and usually has an ion energy of 5.5 eV or less. And small.
- a hole injection / transport layer a material that transports holes to the light-emitting layer with a lower electric field strength is preferred.
- the mobility force of holes for example, when 10 4 ⁇ : when an electric field of LOV / cm is applied, Preferred is at least 10 " 4 cmVv ⁇ sec! /.
- the compound of the present invention when used in a hole transport zone (hole injection / transport layer), the compound of the present invention alone may form a hole injection 'transport layer, or other materials You may mix and use.
- the material for forming the hole injection / transport layer by mixing with the aromatic amine derivative of the present invention is not particularly limited as long as it has the above-mentioned preferred properties. Any material commonly used as a charge transport material and known materials used for a hole injection layer of an organic EL device can be selected and used.
- Porphyrin compounds (disclosed in JP-A-63-29556965), aromatic tertiary amine compounds and styrylamine compounds (US) Patent No. 4, 127, 412, JP-A 53-27033, 54-58445, 54-149634, 54-64299, 55-79450, 55-144250, 56-119132, 61-295, 558, 61-98353, 63-295695, etc.), especially aromatic Preference is given to using tertiary amine compounds.
- inorganic compounds such as p-type Si and p-type SiC can also be used as the material for the hole injection layer.
- the hole-injecting / transporting layer is formed by using the amine compound of the present invention and Z or the above-described compound by thinning by a known method such as a vacuum deposition method, a spin coating method, a casting method, or an LB method. be able to.
- the thickness of the hole-injection 'transport layer is not particularly limited Force Usually 5 ⁇ ! ⁇ 5 ⁇ m.
- the organic semiconductor layer is a layer that assists hole injection or electron injection into the light emitting layer, and preferably has a conductivity of 1 0 _1Q SZcm or more.
- the material for the organic semiconductor layer include thioolefin oligomers, conductive oligomers such as allylamin oligomers disclosed in JP-A-8-193191, allylamin dendrimers, and the like. Conductive dendrimers or the like can be used.
- the electron injection layer'transport layer is a layer that assists the injection of electrons into the light emitting layer and transports it to the light emitting region, and has a high electron mobility.
- the electron transport layer is appropriately selected with a film thickness of several nm to several m.
- an electric field of lO lC / cm is applied to avoid an increase in voltage.
- it is preferable electron mobility is the least 10- 5 cm 2 ZVs than.
- 8-hydroxyquinoline or a metal complex of its derivative, a oxadiazole derivative is preferable.
- the metal complexes of 8-hydroxyquinoline or its derivatives include oxine (generally 8-quinolinol or 8-hydroxy
- oxine generally 8-quinolinol or 8-hydroxy
- a metal chelate oxinoid compound containing a chelate of droxyquinoline, for example, tris (8-quinolinol) aluminum can be used.
- examples of the oxadiazole derivative include an electron transfer compound represented by the following general formula.
- Ar 1 , Ar 2 , Ar 3 , Ar 5 , Ar 6 and Ar 9 each represent a substituted or unsubstituted aryl group, and may be the same or different from each other.
- Ar 7 and Ar 8 each represent a substituted or unsubstituted arylene group, and may be the same or different.
- examples of the aryl group include a phenyl group, a biphenyl group, an anthral group, a perylenyl group, and a pyrenyl group.
- examples of the arylene group include a phenylene group, a naphthylene group, a biphenylene group, an anthrene group, a perylene group, and a pyrenylene group.
- substituent include an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, and a cyan group.
- This electron transfer compound is preferably a film-forming material.
- electron-transmitting compound include the following.
- AA 3 is independently a nitrogen atom or a carbon atom.
- Ar 1 is a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, or a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms
- Ar 2 is a hydrogen atom, substituted or unsubstituted Aryl group having 6 to 60 nuclear carbon atoms, substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, or substituted or unsubstituted carbon number 1 to 20 alkoxy groups, or these divalent groups.
- Ar 1 and Ar 2 is a substituted or unsubstituted condensed ring group having 10 to 60 nuclear carbon atoms, or a substituted or unsubstituted monoheterofused ring group having 3 to 60 nuclear carbon atoms.
- ⁇ L 2 and L are each independently a single bond, a substituted or unsubstituted arylene group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 60 nuclear carbon atoms, or a substituted or unsubstituted group. It is a substituted fluorenylene group.
- R is a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.
- ⁇ is an integer of 0 to 5, and when ⁇ is 2 or more, a plurality of Rs may be the same or different and adjacent to each other
- a plurality of R groups may be bonded to each other to form a carbocyclic aliphatic ring or a carbocyclic aromatic ring. The nitrogen-containing heterocyclic derivative represented by this.
- HAr is a nitrogen-containing heterocycle having 3 to 40 carbon atoms which may have a substituent
- L is a single bond and having 6 to 60 carbon atoms which may have a substituent.
- a fluorolenylene group, and Ar 1 is A divalent aromatic hydrocarbon group having 6 to 60 carbon atoms which may have a substituent
- Ar 2 is an aryl group having 6 to 60 carbon atoms which may have a substituent or A nitrogen-containing heterocyclic derivative represented by the following formula: a heteroaryl group having 3 to 60 carbon atoms, which may have a substituent.
- X and Y are each independently a saturated or unsaturated hydrocarbon group having 1 to 6 carbon atoms, an alkoxy group, an alkoxy group, an alkyloxy group, a hydroxy group, a substituted or unsubstituted group.
- Aryl groups, substituted or unsubstituted heterocycles, or X and Y A structure that forms a sum or unsaturated ring, R
- 1 to R are independently hydrogen, halogen 4
- Atoms substituted or unsubstituted alkyl groups having 1 to 6 carbon atoms, alkoxy groups, aryloxy groups, perfluoroalkyl groups, perfluoroalkoxy groups, amino groups, alkyl carbo yl groups, aryl carbo groups.
- R to R and Z are each independently a hydrogen atom, a saturated or unsaturated carbonization
- a hydrogen group, an aromatic group, a heterocyclic group, a substituted amino group, a substituted boryl group, an alkoxy group or an aryloxy group, and X, Y and Z are each independently a saturated or unsaturated carbonization.
- Z and Z substituents may be bonded to each other to form a condensed ring.
- N is 1.
- n 1 represents an integer of 2 to 3, and when n is 2 or more, Z may be different. However, n is 1, X, Y and R force methyl group
- Q 1 and Q 2 each independently represent a ligand represented by the following general formula (G), and L represents a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted group.
- L represents a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted group.
- OR ⁇ R 1 is a hydrogen atom, substituted or unsubstituted alkyl group, substituted or unsubstituted cycloalkyl group, substituted Or an unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.
- Or — O Ga Q 3 (Q 4 ) (Q 3 and Q 4 are the same as Q 1 and Q 2 ).
- ring A 1 and ⁇ are 6-membered aryl structures fused to each other which may have a substituent.
- This metal complex is strong as an n-type semiconductor and has a high electron injection capability. Furthermore, since the generation energy at the time of complex formation is low, the bond between the metal and the ligand of the formed metal complex is strengthened, and the fluorescence quantum efficiency as a light emitting material is also increasing.
- substituents of the rings A 1 and A 2 forming the ligand of the general formula (G) include chlorine, bromine, iodine, halogen atoms of fluorine, methyl group, ethyl group, propyl group, A substituted or unsubstituted alkyl group such as a methyl group, s-butyl group, t-butyl group, pentyl group, hexyl group, heptyl group, octyl group, stearyl group, trichloromethyl group, phenyl group, naphthyl group, 3 —Methylphenol group, 3-methoxyphenyl group, 3-fluorophenol Substituted, unsubstituted aryl groups such as thiol group, 3-trichloromethylphenyl group, 3-trifluoromethylphenyl group, 3-trifluorophenyl group, methoxy group, n -butoxy group, t
- a preferred form of the organic EL device of the present invention is a device containing a reducing dopant in an electron transporting region or an interface region between a cathode and an organic layer.
- the reducing dopant is defined as a substance capable of reducing the electron transporting compound. Accordingly, various materials can be used as long as they have a certain reducibility, for example, alkali metals, alkaline earth metals, rare earth metals, alkali metal oxides, alkali metal halides, alkaline earth metals.
- At least one substance can be preferably used.
- preferable reducing dopants include Na (work function: 2.36 eV), K (work function: 2.28 eV), Rb (work function: 2.16 eV) and Cs (work function: 1).
- 95eV) Force Group force At least one selected alkali metal, Ca (work function: 2.9 eV), Sr (work function: 2.0 to 2.5 eV) and Ba (work function: 2.52 eV) Group force as force
- Particularly preferred are those having a work function of 2.9 eV or less, including at least one selected alkaline earth metal.
- a more preferable reducing dopant is at least one alkali metal selected from the group force consisting of K, Rb and Cs, more preferably Rb or Cs, and most preferably Cs. is there.
- alkali metals can improve emission brightness and extend the life of organic EL devices by adding a relatively small amount to the electron injection region, which has a particularly high reducing ability.
- a reducing dopant having a work function of 2.9 eV or less a combination of these two or more alkali metals is also preferred.
- combinations containing Cs, such as Cs and Na, Cs and K, A combination of Cs and Rb or Cs, Na and ⁇ is preferred.
- an electron injection layer made of an insulator or a semiconductor may be further provided between the cathode and the organic layer.
- Such insulators include alkali metal chalcogenide, alkaline earth It is preferable to use at least one metal compound selected from the group consisting of metal halide chalcogenides, alkali metal halides and alkaline earth metal halides. If the electron injection layer is composed of these alkali metal chalcogenides or the like, it is preferable in that the electron injection property can be further improved.
- preferred alkali metal strength rucogates include, for example, Li 0, K 0, Na S, Na Se and Na 2 O, and are preferred.
- New alkaline earth metal chalcogenides include, for example, CaO, BaO, SrO, BeO, BaS and CaSe.
- preferable alkali metal halides include LiF, NaF, KF, LiCl, KC1, and NaCl.
- preferred alkaline earth metal halides include, for example, CaF, BaF, SrF, MgF, and BeF.
- V iodofluoride
- halides other than fluoride
- the inorganic compound constituting the electron transport layer is preferably a microcrystalline or amorphous insulating thin film. If the electron transport layer is composed of these insulating thin films, a more uniform thin film is formed, and pixel defects such as dark spots can be reduced. Examples of such inorganic compounds include the above-mentioned alkali metal chalcogenides, alkaline earth metal strength alkoxides, alkali metal halides and alkaline earth metal halides.
- Electrode those having a small work function! / ⁇ (4 eV or less) metal, an alloy, an electrically conductive compound and a mixture thereof as an electrode material are used.
- electrode materials include sodium, sodium-potassium alloy, magnesium, lithium, magnesium silver alloy, aluminum Z aluminum oxide, Al / Li 2 O, Al / LiO, Al / LiF,
- Lumium lithium alloys indium, rare earth metals and so on.
- This cathode can be produced by forming a thin film of these electrode materials by a method such as vapor deposition or sputtering.
- the transmittance for the light emission of the cathode is preferably larger than 10%.
- the sheet resistance as a cathode is several hundred ⁇ / b
- the film thickness is usually ⁇ ! ⁇ 1 ⁇ m, preferably 50 to 200 nm.
- Examples of the material used for the insulating layer include acid aluminum, lithium fluoride, lithium oxide, fluorescesium, acid cesium, acid magnesium, calcium magnesium, acid calcium, calcium fluoride, Examples include aluminum nitride, titanium oxide, silicon oxide, germanium oxide, silicon nitride, boron nitride, molybdenum oxide, ruthenium oxide, and vanadium oxide. A mixture or laminate of these may be used.
- an anode, a light emitting layer, a hole injection layer as necessary, and an electron injection layer as necessary are formed by the above materials and methods.
- the cathode may be formed.
- the organic EL element can be fabricated in the reverse order from the cathode to the anode.
- an organic EL device having a structure in which an anode, a Z hole injection layer, a Z light emitting layer, a Z electron injection layer, and a Z cathode are sequentially provided on a transparent substrate will be described.
- a thin film made of an anode material is formed on a suitable light-transmitting substrate by an evaporation method or a sputtering method so as to have a thickness of 1 ⁇ m or less, preferably in the range of 10 to 200 nm, and used as an anode.
- a hole injection layer is provided on the anode.
- the hole injection layer can be formed by a vacuum deposition method, a spin coating method, a casting method, an LB method, or the like, but a homogeneous film can be obtained immediately and pinholes are generated. It is preferable to form by a vacuum vapor deposition method.
- the deposition conditions vary depending on the compound used (material of the hole injection layer), the crystal structure and recombination structure of the target hole injection layer, etc.
- a light emitting layer is provided on the hole injection layer.
- the light emitting layer can also be formed by thinning the light emitting material by a method such as vacuum deposition, sputtering, spin coating, or casting using the light emitting material according to the present invention. Or soon One pinhole is not likely to be generated, and it is preferable to form by a point evaporation vacuum deposition method.
- the vapor deposition condition varies depending on the compound used, but can generally be selected from the same condition range as that of the hole injection layer.
- an electron injection layer is provided on the light emitting layer. Also in this case, like the hole injection layer and the light emitting layer, it is preferable to form by a vacuum evaporation method because it is necessary to obtain a homogeneous film.
- the vapor deposition conditions can be selected from the same condition ranges as those for the hole injection layer and the light emitting layer.
- the compound of the present invention differs depending on which layer in the light emission band or the hole transport band is contained, but when the vacuum evaporation method is used, it can be co-deposited with other materials. Moreover, when using a spin coat method, it can be contained by mixing with other materials.
- a cathode is laminated to obtain an organic EL element.
- the cathode also has a metallic force, and vapor deposition and sputtering can be used. However, vacuum deposition is preferred to protect the underlying organic layer from damage during film formation.
- the above organic EL device is preferably manufactured from the anode to the cathode consistently by a single vacuum.
- the method for forming each layer of the organic EL device of the present invention is not particularly limited. Conventionally known methods such as vacuum deposition and spin coating can be used.
- the organic thin film layer containing the amine compound of the present invention can be prepared by vacuum deposition, molecular beam deposition (MBE), dating in a solution dissolved in a solvent, spin coating, casting, or bar coating. It can be formed by a known method using a coating method such as a roll coating method.
- the thickness of each organic layer of the organic EL device of the present invention is not particularly limited, but is usually preferably in the range of several nm to 1 ⁇ m in order to improve defects such as pinholes and efficiency.
- Benzothiadiazole 18. lg (133mmo 1) is placed in a 200ml three-necked flask and dissolved in 42.9ml of 47% HBr aqueous solution. To this solution, 20 ml of bromine is added dropwise at room temperature over 20 minutes, and 13.3 ml of 47% HBr aqueous solution is added and refluxed for 24 hours. This is cooled to room temperature, the solid is dissolved in 700 ml of dichloromethane, and then 400 ml of a saturated aqueous solution of sodium thiosulfate is sufficiently extracted with a separatory funnel.
- dichloromethane layer is washed with 150 ml of distilled water three times and then dried with anhydrous sodium sulfate.
- Dichloromethane was concentrated at about 200 m and recrystallized by placing it at 4 ° C for 24 hours.
- the precipitated needle crystal was filtered off to obtain 28.2 g (yield 72%) of the target compound.
- Tg glass transition temperature
- FD-MS field desorption mass spectrum
- ionization potential ionization potential
- DSC differential scanning calorimetry
- HX110 manufactured by JEOL Ltd.
- a glass substrate with a transparent electrode having a thickness of 25 mm X 75 mm X 1.1 mm was ultrasonically cleaned in isopropyl alcohol for 5 minutes, followed by UV ozone cleaning for 30 minutes.
- a glass substrate with a transparent electrode line after cleaning is mounted on the substrate holder of a vacuum deposition apparatus, and a compound having a film thickness of 60 nm is first formed so as to cover the transparent electrode on the surface where the transparent electrode line is formed 1 Was deposited.
- This Compound 1 film functions as a hole injection layer.
- a 20 nm-thick N, N, ⁇ ′, N′-tetrakis (4-biphenyl) -4, 4, monobenzidine film was formed on the Compound 1 film.
- This BPTPD membrane functions as a hole transport layer.
- the following compound (40 nm) and doping compound B having a thickness of 40 nm were co-deposited on the BPTPD film at a deposition rate ratio of 40: 2.
- This film functions as a light emitting layer.
- a 1 Onm-thick tris (hydroxy quinoline) aluminum (Alq) film was formed. This Alq film functions as an electron transport layer.
- Li source manufactured by Saergetta Co., Ltd.
- Alq Li film (lOnm) as an electron injection layer (cathode).
- A1 was deposited on this Alq: Li film to form a metal cathode, and an organic EL device was fabricated.
- the luminous efficiency was 9.2 cdZA, and the luminance half time from the initial luminance 1 OOOcdZm 2 was 500 hours or more.
- the maximum emission wavelength was 473 nm.
- Example 1 a device was prepared in the same manner except that Compound 2 was used instead of Compound 1.
- the light emission efficiency was 9. lcdZA, and the luminance half time from the initial luminance lOOOcdZm 2 was 500 hours or more.
- the maximum emission wavelength was 473 nm.
- Example 1 a device was prepared in the same manner using the following Comparative Compound 1 instead of Compound 1.
- the luminous efficiency was 4. OcdZA, and the luminance half time from the initial luminance lOOOcd / m 2 was 10 hours.
- Comparative Compound 1 Comparative Compound 1 (FW464) used in Comparative Example 1 undergoes a decomposition reaction during high-temperature heating (200 to 300 ° C), and multiple peaks mainly composed of mass number 442 are observed by FD-MS measurement. It has been done.
- the light emission performance of Comparative Example 1 is remarkably low! It can be considered that thermal decomposition occurred during the deposition of Comparative Compound 1 during vapor deposition.
- the novel amine compound of the present invention is suitable for a hole injection material or a hole transport material of an electrophotographic photoreceptor or an organic EL device, and has excellent solubility.
- a thin film can be formed by a coating method.
- an organic EL device using this amine compound has an excellent balance of physical properties such as low ionization potential, large band gap energy, high injection efficiency, and high mobility, and high heat resistance and good luminance Z voltage characteristics, current Density Long voltage life with high luminous efficiency while maintaining Z voltage characteristics. For this reason, it is extremely useful as an organic EL device with a high example, and is also suitable for in-vehicle applications that require heat resistance.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2007546377A JPWO2007060795A1 (ja) | 2005-11-28 | 2006-10-17 | アミン系化合物及びそれを利用した有機エレクトロルミネッセンス素子 |
EP06811876A EP1956011A1 (en) | 2005-11-28 | 2006-10-17 | Amine compound and organic electroluminescent element employing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-341595 | 2005-11-28 | ||
JP2005341595 | 2005-11-28 |
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WO2007060795A1 true WO2007060795A1 (ja) | 2007-05-31 |
Family
ID=38067032
Family Applications (1)
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PCT/JP2006/320621 WO2007060795A1 (ja) | 2005-11-28 | 2006-10-17 | アミン系化合物及びそれを利用した有機エレクトロルミネッセンス素子 |
Country Status (7)
Country | Link |
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US (1) | US20070132372A1 (ja) |
EP (1) | EP1956011A1 (ja) |
JP (1) | JPWO2007060795A1 (ja) |
KR (1) | KR20080080099A (ja) |
CN (1) | CN101316826A (ja) |
TW (1) | TW200732310A (ja) |
WO (1) | WO2007060795A1 (ja) |
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WO2009157426A1 (ja) * | 2008-06-23 | 2009-12-30 | 住友化学株式会社 | 組成物及び同組成物を用いてなる発光素子 |
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CN101316826A (zh) | 2008-12-03 |
KR20080080099A (ko) | 2008-09-02 |
JPWO2007060795A1 (ja) | 2009-05-07 |
US20070132372A1 (en) | 2007-06-14 |
EP1956011A1 (en) | 2008-08-13 |
TW200732310A (en) | 2007-09-01 |
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