WO2016088759A1 - 有機エレクトロルミネッセンス素子 - Google Patents
有機エレクトロルミネッセンス素子 Download PDFInfo
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- WO2016088759A1 WO2016088759A1 PCT/JP2015/083776 JP2015083776W WO2016088759A1 WO 2016088759 A1 WO2016088759 A1 WO 2016088759A1 JP 2015083776 W JP2015083776 W JP 2015083776W WO 2016088759 A1 WO2016088759 A1 WO 2016088759A1
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- Prior art keywords
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- substituted
- unsubstituted
- substituent
- carbon atoms
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- -1 arylamine compound Chemical class 0.000 claims abstract description 275
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims abstract description 152
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims abstract description 150
- 239000000463 material Substances 0.000 claims abstract description 96
- 230000005525 hole transport Effects 0.000 claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 52
- 239000007924 injection Substances 0.000 claims abstract description 52
- 150000001875 compounds Chemical class 0.000 claims description 250
- 125000001424 substituent group Chemical group 0.000 claims description 239
- 125000004432 carbon atom Chemical group C* 0.000 claims description 180
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 121
- 229910052717 sulfur Inorganic materials 0.000 claims description 71
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 66
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 65
- 125000004434 sulfur atom Chemical group 0.000 claims description 65
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 61
- 125000000217 alkyl group Chemical group 0.000 claims description 56
- 125000003342 alkenyl group Chemical group 0.000 claims description 50
- 125000003118 aryl group Chemical group 0.000 claims description 47
- 125000004104 aryloxy group Chemical group 0.000 claims description 37
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 36
- 125000003545 alkoxy group Chemical group 0.000 claims description 32
- 229910052805 deuterium Inorganic materials 0.000 claims description 30
- 125000004431 deuterium atom Chemical group 0.000 claims description 30
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 28
- 150000001412 amines Chemical class 0.000 claims description 26
- 125000000714 pyrimidinyl group Chemical group 0.000 claims description 26
- 229910052801 chlorine Inorganic materials 0.000 claims description 24
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 24
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 24
- 229910052731 fluorine Inorganic materials 0.000 claims description 24
- 125000001153 fluoro group Chemical group F* 0.000 claims description 24
- 125000003277 amino group Chemical group 0.000 claims description 22
- 125000005647 linker group Chemical group 0.000 claims description 19
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 18
- 238000005401 electroluminescence Methods 0.000 claims description 16
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 14
- 125000000000 cycloalkoxy group Chemical group 0.000 claims description 14
- 125000005577 anthracene group Chemical group 0.000 claims description 13
- 125000006617 triphenylamine group Chemical group 0.000 claims description 12
- 239000002019 doping agent Substances 0.000 claims description 11
- 125000005842 heteroatom Chemical group 0.000 claims description 9
- 125000005338 substituted cycloalkoxy group Chemical group 0.000 claims description 9
- 125000005346 substituted cycloalkyl group Chemical group 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 7
- 150000001454 anthracenes Chemical class 0.000 claims description 6
- 150000001721 carbon Chemical class 0.000 claims description 5
- 125000003367 polycyclic group Chemical group 0.000 claims description 5
- PXLYGWXKAVCTPX-UHFFFAOYSA-N 1,2,3,4,5,6-hexamethylidenecyclohexane Chemical class C=C1C(=C)C(=C)C(=C)C(=C)C1=C PXLYGWXKAVCTPX-UHFFFAOYSA-N 0.000 claims description 4
- 150000003220 pyrenes Chemical class 0.000 claims description 4
- JNGDCMHTNXRQQD-UHFFFAOYSA-N 3,6-dioxocyclohexa-1,4-diene-1,2,4,5-tetracarbonitrile Chemical compound O=C1C(C#N)=C(C#N)C(=O)C(C#N)=C1C#N JNGDCMHTNXRQQD-UHFFFAOYSA-N 0.000 claims description 3
- UVEAFTFQMHUWEY-UHFFFAOYSA-N methane;1,2,4,5-tetrafluoro-3,6-dioxocyclohexane-1,2,4,5-tetracarbonitrile Chemical compound C.C.N#CC1(F)C(=O)C(F)(C#N)C(F)(C#N)C(=O)C1(F)C#N UVEAFTFQMHUWEY-UHFFFAOYSA-N 0.000 claims description 3
- 238000006467 substitution reaction Methods 0.000 claims description 3
- 150000001555 benzenes Chemical group 0.000 claims 1
- 239000010409 thin film Substances 0.000 abstract description 20
- 230000000903 blocking effect Effects 0.000 abstract description 14
- 239000000243 solution Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 158
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 153
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 99
- 239000000843 powder Substances 0.000 description 86
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 69
- 230000015572 biosynthetic process Effects 0.000 description 46
- 238000003786 synthesis reaction Methods 0.000 description 46
- 238000007740 vapor deposition Methods 0.000 description 45
- 238000001914 filtration Methods 0.000 description 42
- 238000005481 NMR spectroscopy Methods 0.000 description 39
- 238000005160 1H NMR spectroscopy Methods 0.000 description 38
- 229910052739 hydrogen Inorganic materials 0.000 description 38
- 239000001257 hydrogen Substances 0.000 description 38
- 238000006243 chemical reaction Methods 0.000 description 37
- 239000010408 film Substances 0.000 description 36
- 125000000319 biphenyl-4-yl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C1=C([H])C([H])=C([*])C([H])=C1[H] 0.000 description 34
- 238000005259 measurement Methods 0.000 description 33
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 32
- 238000000034 method Methods 0.000 description 30
- 125000001624 naphthyl group Chemical group 0.000 description 29
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 28
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 27
- 125000004076 pyridyl group Chemical group 0.000 description 23
- 125000000623 heterocyclic group Chemical group 0.000 description 22
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 21
- 125000001792 phenanthrenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C=CC12)* 0.000 description 21
- 239000007787 solid Substances 0.000 description 21
- 125000004988 dibenzothienyl group Chemical group C1(=CC=CC=2SC3=C(C21)C=CC=C3)* 0.000 description 20
- 125000005493 quinolyl group Chemical group 0.000 description 19
- 125000001544 thienyl group Chemical group 0.000 description 19
- 125000000499 benzofuranyl group Chemical group O1C(=CC2=C1C=CC=C2)* 0.000 description 18
- 125000003914 fluoranthenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC=C4C1=C23)* 0.000 description 18
- 125000002541 furyl group Chemical group 0.000 description 18
- 125000005956 isoquinolyl group Chemical group 0.000 description 18
- 125000001725 pyrenyl group Chemical group 0.000 description 18
- 125000003960 triphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C3=CC=CC=C3C12)* 0.000 description 18
- 125000004196 benzothienyl group Chemical group S1C(=CC2=C1C=CC=C2)* 0.000 description 17
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 17
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 16
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 16
- 125000001041 indolyl group Chemical group 0.000 description 16
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 16
- 125000001637 1-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C(*)=C([H])C([H])=C([H])C2=C1[H] 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 125000004623 carbolinyl group Chemical group 0.000 description 15
- 239000012043 crude product Substances 0.000 description 15
- 238000002425 crystallisation Methods 0.000 description 15
- 238000000151 deposition Methods 0.000 description 15
- 230000008021 deposition Effects 0.000 description 15
- 239000000203 mixture Substances 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 15
- 125000003226 pyrazolyl group Chemical group 0.000 description 15
- 125000001164 benzothiazolyl group Chemical group S1C(=NC2=C1C=CC=C2)* 0.000 description 14
- 125000004541 benzoxazolyl group Chemical group O1C(=NC2=C1C=CC=C2)* 0.000 description 14
- 230000008025 crystallization Effects 0.000 description 14
- 229910000027 potassium carbonate Inorganic materials 0.000 description 14
- 125000000168 pyrrolyl group Chemical group 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 13
- 239000000741 silica gel Substances 0.000 description 13
- 229910002027 silica gel Inorganic materials 0.000 description 13
- 238000003756 stirring Methods 0.000 description 13
- 125000004306 triazinyl group Chemical group 0.000 description 13
- 125000002178 anthracenyl group Chemical group C1(=CC=CC2=CC3=CC=CC=C3C=C12)* 0.000 description 12
- 125000004433 nitrogen atom Chemical group N* 0.000 description 12
- ZWQBZEFLFSFEOS-UHFFFAOYSA-N 3,5-ditert-butyl-2-hydroxybenzoic acid Chemical compound CC(C)(C)C1=CC(C(O)=O)=C(O)C(C(C)(C)C)=C1 ZWQBZEFLFSFEOS-UHFFFAOYSA-N 0.000 description 11
- DDYHOFOLBMVEPM-UHFFFAOYSA-N 5',9'-dibromospiro[fluorene-9,7'-fluoreno[4,3-b][1]benzofuran] Chemical compound C12=CC=CC=C2C2=C(O1)C=1C3=CC=C(Br)C=C3C3(C4=C(C5=CC=CC=C35)C=CC=C4)C=1C=C2Br DDYHOFOLBMVEPM-UHFFFAOYSA-N 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 11
- KWKXNDCHNDYVRT-UHFFFAOYSA-N dodecylbenzene Chemical compound CCCCCCCCCCCCC1=CC=CC=C1 KWKXNDCHNDYVRT-UHFFFAOYSA-N 0.000 description 11
- 238000002156 mixing Methods 0.000 description 11
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 11
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 10
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 10
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 10
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 10
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 10
- MWRPTYPXCLUMLH-UHFFFAOYSA-N n-phenyltriphenylen-2-amine Chemical compound C=1C=C2C3=CC=CC=C3C3=CC=CC=C3C2=CC=1NC1=CC=CC=C1 MWRPTYPXCLUMLH-UHFFFAOYSA-N 0.000 description 10
- 238000010992 reflux Methods 0.000 description 10
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 10
- BWHDROKFUHTORW-UHFFFAOYSA-N tritert-butylphosphane Chemical compound CC(C)(C)P(C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-N 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 9
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 9
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 9
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 9
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 9
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 9
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 9
- 238000000746 purification Methods 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 8
- 239000012046 mixed solvent Substances 0.000 description 8
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 8
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 7
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 7
- 125000000641 acridinyl group Chemical group C1(=CC=CC2=NC3=CC=CC=C3C=C12)* 0.000 description 7
- 125000002102 aryl alkyloxo group Chemical group 0.000 description 7
- 229910001873 dinitrogen Inorganic materials 0.000 description 7
- 230000009477 glass transition Effects 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 229910052740 iodine Inorganic materials 0.000 description 7
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 7
- 125000004593 naphthyridinyl group Chemical group N1=C(C=CC2=CC=CN=C12)* 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 7
- 238000001953 recrystallisation Methods 0.000 description 7
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 7
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 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 6
- OPEKHRGERHDLRK-UHFFFAOYSA-N 4-tert-butyl-n-(4-tert-butylphenyl)aniline Chemical compound C1=CC(C(C)(C)C)=CC=C1NC1=CC=C(C(C)(C)C)C=C1 OPEKHRGERHDLRK-UHFFFAOYSA-N 0.000 description 6
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 125000000051 benzyloxy group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])O* 0.000 description 6
- 239000004305 biphenyl Substances 0.000 description 6
- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 description 6
- 125000005843 halogen group Chemical group 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 6
- 150000002430 hydrocarbons Chemical group 0.000 description 6
- 230000001678 irradiating effect Effects 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 6
- 239000012044 organic layer Substances 0.000 description 6
- 125000004625 phenanthrolinyl group Chemical group N1=C(C=CC2=CC=C3C=CC=NC3=C12)* 0.000 description 6
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 6
- 239000002356 single layer Substances 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 125000004062 acenaphthenyl group Chemical group C1(CC2=CC=CC3=CC=CC1=C23)* 0.000 description 5
- 150000004982 aromatic amines Chemical class 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 125000005605 benzo group Chemical group 0.000 description 5
- 235000010290 biphenyl Nutrition 0.000 description 5
- 238000004440 column chromatography Methods 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- YJIZNABGURYDLD-UHFFFAOYSA-N n-[4-(4-bromophenyl)phenyl]-n,4-diphenylaniline Chemical group C1=CC(Br)=CC=C1C1=CC=C(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC=CC=2)C=C1 YJIZNABGURYDLD-UHFFFAOYSA-N 0.000 description 5
- 125000005504 styryl group Chemical group 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- HXGDTGSAIMULJN-UHFFFAOYSA-N acenaphthylene Chemical compound C1=CC(C=C2)=C3C2=CC=CC3=C1 HXGDTGSAIMULJN-UHFFFAOYSA-N 0.000 description 4
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 4
- 125000002252 acyl group Chemical group 0.000 description 4
- 125000003670 adamantan-2-yl group Chemical group [H]C1([H])C(C2([H])[H])([H])C([H])([H])C3([H])C([*])([H])C1([H])C([H])([H])C2([H])C3([H])[H] 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
- 125000003609 aryl vinyl group Chemical group 0.000 description 4
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 4
- 125000002993 cycloalkylene group Chemical group 0.000 description 4
- 125000002933 cyclohexyloxy group Chemical group C1(CCCCC1)O* 0.000 description 4
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 4
- 125000001887 cyclopentyloxy group Chemical group C1(CCCC1)O* 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- PQNFLJBBNBOBRQ-UHFFFAOYSA-N indane Chemical compound C1=CC=C2CCCC2=C1 PQNFLJBBNBOBRQ-UHFFFAOYSA-N 0.000 description 4
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
- 125000005186 naphthyloxy group Chemical group C1(=CC=CC2=CC=CC=C12)O* 0.000 description 4
- YJVFFLUZDVXJQI-UHFFFAOYSA-L palladium(ii) acetate Chemical compound [Pd+2].CC([O-])=O.CC([O-])=O YJVFFLUZDVXJQI-UHFFFAOYSA-L 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
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- XNKVIGSNRYAOQZ-UHFFFAOYSA-N dibenzofluorene Chemical class C12=CC=CC=C2C2=CC=CC=C2C2=C1CC1=CC=CC=C12 XNKVIGSNRYAOQZ-UHFFFAOYSA-N 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 125000005678 ethenylene group Chemical group [H]C([*:1])=C([H])[*:2] 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- QJAYWJUCAONYLG-UHFFFAOYSA-N n,3-diphenylaniline Chemical compound C=1C=CC(C=2C=CC=CC=2)=CC=1NC1=CC=CC=C1 QJAYWJUCAONYLG-UHFFFAOYSA-N 0.000 description 1
- YGNUPJXMDOFFDO-UHFFFAOYSA-N n,4-diphenylaniline Chemical compound C=1C=C(C=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 YGNUPJXMDOFFDO-UHFFFAOYSA-N 0.000 description 1
- VBQIVFTUXFKGKW-UHFFFAOYSA-N n-[4-(4-bromophenyl)phenyl]-4-phenyl-n-(4-phenylphenyl)aniline Chemical group C1=CC(Br)=CC=C1C1=CC=C(N(C=2C=CC(=CC=2)C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC=CC=2)C=C1 VBQIVFTUXFKGKW-UHFFFAOYSA-N 0.000 description 1
- JYAVHXABZQYLTH-UHFFFAOYSA-N n-[4-(4-bromophenyl)phenyl]-n-phenylnaphthalen-1-amine Chemical group C1=CC(Br)=CC=C1C1=CC=C(N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 JYAVHXABZQYLTH-UHFFFAOYSA-N 0.000 description 1
- SBMXAWJSNIAHFR-UHFFFAOYSA-N n-naphthalen-2-ylnaphthalen-2-amine Chemical compound C1=CC=CC2=CC(NC=3C=C4C=CC=CC4=CC=3)=CC=C21 SBMXAWJSNIAHFR-UHFFFAOYSA-N 0.000 description 1
- NVTBFHPXULVYKN-UHFFFAOYSA-N n-phenyl-n-(4-phenylphenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline Chemical compound O1C(C)(C)C(C)(C)OB1C1=CC=C(N(C=2C=CC=CC=2)C=2C=CC(=CC=2)C=2C=CC=CC=2)C=C1 NVTBFHPXULVYKN-UHFFFAOYSA-N 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 150000007978 oxazole derivatives Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 125000000538 pentafluorophenyl group Chemical group FC1=C(F)C(F)=C(*)C(F)=C1F 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- XEXYATIPBLUGSF-UHFFFAOYSA-N phenanthro[9,10-b]pyridine-2,3,4,5,6,7-hexacarbonitrile Chemical group N1=C(C#N)C(C#N)=C(C#N)C2=C(C(C#N)=C(C(C#N)=C3)C#N)C3=C(C=CC=C3)C3=C21 XEXYATIPBLUGSF-UHFFFAOYSA-N 0.000 description 1
- 150000005041 phenanthrolines Chemical class 0.000 description 1
- 125000001791 phenazinyl group Chemical group C1(=CC=CC2=NC3=CC=CC=C3N=C12)* 0.000 description 1
- 125000001484 phenothiazinyl group Chemical group C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- 125000001644 phenoxazinyl group Chemical group C1(=CC=CC=2OC3=CC=CC=C3NC12)* 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 150000003252 quinoxalines Chemical class 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical class [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 150000003967 siloles Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- KEAYESYHFKHZAL-BJUDXGSMSA-N sodium-22 Chemical compound [22Na] KEAYESYHFKHZAL-BJUDXGSMSA-N 0.000 description 1
- KEAYESYHFKHZAL-IGMARMGPSA-N sodium-23 atom Chemical compound [23Na] KEAYESYHFKHZAL-IGMARMGPSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000004213 tert-butoxy group Chemical group [H]C([H])([H])C(O*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 150000001651 triphenylamine derivatives Chemical class 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
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Definitions
- the present invention relates to an organic electroluminescence element which is a self-luminous element suitable for various display devices. Specifically, the present invention relates to an organic electroluminescence element (hereinafter referred to as organic EL) using a specific arylamine compound doped with an electron acceptor. It may be called an element.)
- organic EL organic electroluminescence element
- the organic EL element is a self-luminous element, it has been actively researched because it is brighter and more visible than a liquid crystal element and can be clearly displayed.
- Non-Patent Document 2 An element utilizing light emission by thermally activated delayed fluorescence (TADF) has also been developed.
- TADF thermally activated delayed fluorescence
- the light emitting layer can be prepared by doping a charge transporting compound generally called a host material with a fluorescent compound, a phosphorescent compound or a material emitting delayed fluorescence.
- a charge transporting compound generally called a host material with a fluorescent compound, a phosphorescent compound or a material emitting delayed fluorescence.
- selection of an organic material in the organic EL element greatly affects various characteristics such as efficiency and durability of the element (for example, see Non-patent document 2).
- the light injected from both electrodes is recombined in the light emitting layer to obtain light emission, but it is important how efficiently both holes and electrons are transferred to the light emitting layer. It is necessary to make the device excellent in carrier balance.
- the probability of recombination of holes and electrons is improved by improving the hole injection property and blocking the electrons injected from the cathode, and further excitons generated in the light emitting layer. By confining, high luminous efficiency can be obtained. Therefore, the role of the hole transport material is important, and there is a demand for a hole transport material that has high hole injectability, high hole mobility, high electron blocking properties, and high durability against electrons. ing.
- the heat resistance and amorphous nature of the material are important for the lifetime of the element.
- thermal decomposition occurs even at a low temperature due to heat generated when the element is driven, and the material is deteriorated.
- the thin film is crystallized even in a short time, and the element is deteriorated. For this reason, the material used is required to have high heat resistance and good amorphous properties.
- NPD N, N′-diphenyl-N, N′-di ( ⁇ -naphthyl) benzidine (NPD) and various aromatic amine derivatives are known as hole transport materials that have been used in organic EL devices so far.
- NPD has a good hole transport capability, but its glass transition point (Tg), which is an index of heat resistance, is as low as 96 ° C., and device characteristics are degraded due to crystallization under high temperature conditions (for example, Non-patent document 4).
- Tg glass transition point
- An arylamine compound having a substituted carbazole structure has been proposed as a compound with improved characteristics such as heat resistance and hole injection properties (see, for example, Patent Document 4 and Patent Document 5).
- the material normally used for the layer is further doped with P by doping trisbromophenylamine hexachloroantimony, a radiolene derivative, F4-TCNQ, or the like.
- Patent Document 6 Although it has been proposed to improve the properties (see Patent Document 6 and Non-Patent Document 5), in an element using these compounds in a hole injection layer or a hole transport layer, low driving voltage, heat resistance, Although the luminous efficiency has been improved, it is not yet sufficient, and there is a demand for further lower driving voltage and higher luminous efficiency.
- JP-A-8-048656 Japanese Patent No. 3194657 Japanese Patent No. 4943840 JP 2006-151979 A International Publication No. 2008/62636 International Publication No. 2014/009310 International Publication No. 2005/115970 JP-A-7-126615 Japanese Patent No. 8-048656 JP 2005-108804 A International Publication No. 2011/059000 International Publication No. 2003/060956 Korean Open Patent 2013-060157
- the object of the present invention is as a material for an organic EL device having high luminous efficiency and high durability, and an organic EL having excellent hole and electron injection / transport performance, electron blocking ability, and stability and durability in a thin film state.
- An object of the present invention is to provide an organic EL element having a low driving voltage, a high light emission efficiency, and a long life by combining various materials for the element so that the characteristics of each material can be effectively expressed.
- the physical characteristics that the organic EL element to be provided by the present invention should have include (1) a low emission start voltage, (2) a low practical drive voltage, and (3) a light emission efficiency and a power efficiency. And (4) long life.
- the present inventors focused on the fact that the arylamine-based material doped with an electron acceptor is excellent in hole injection and transport ability, thin film stability and durability.
- various organic EL devices doped with an electron acceptor in the material of the hole injection layer are produced. The characteristics of the device were earnestly evaluated.
- various organic EL devices were produced by combining specific arylamine compounds doped with an electron acceptor (having a structure) and specific arylamine compounds not doped with an electron acceptor (having a structure), and device characteristics evaluation Went eagerly. As a result, the present invention has been completed.
- the following organic EL elements are provided.
- the hole injection layer is represented by the following general formula (1).
- An organic EL device comprising an amine compound and an electron acceptor.
- Ar 1 to Ar 4 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted condensed polycyclic rings. Represents an aromatic group.
- the electron acceptor is trisbromophenylamine hexachloroantimony, tetracyanoquinone dimethane (TCNQ), 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinone dimethane (F4TCNQ), a radicalene derivative
- TCNQ tetracyanoquinone dimethane
- F4TCNQ 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinone dimethane
- F4TCNQ 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinone dimethane
- radicalene derivative The organic EL device according to 1) or 2) above, which is an electron acceptor selected from:
- Ar 5 to Ar 7 may be the same as or different from each other, and represent an aromatic hydrocarbon group, an aromatic heterocyclic group, or a condensed polycyclic aromatic group having an electron acceptor group as a substituent.
- the hole transport layer contains an arylamine compound having a structure in which 2 to 6 triphenylamine structures are connected by a divalent group not containing a single bond or a hetero atom in the molecule 1) To 4).
- An arylamine compound having a structure in which 2 to 6 triphenylamine structures in the molecule are connected by a divalent group not containing a single bond or a hetero atom is an aryl represented by the following general formula (3): 5.
- R 1 to R 6 are a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, or a linear or branched alkyl having 1 to 6 carbon atoms which may have a substituent.
- r 1 , r 2 , r 5 and r 6 are integers of 2 to 5
- R 1 to R 6 bonded to the same benzene ring may be the same or different from each other, and may be a single bond, substituted or And may be bonded to each other via a substituted methylene group, an oxygen atom or a sulfur atom to form a ring, and L 1 represents a divalent linking group.
- An arylamine compound having a structure in which two to six triphenylamine structures in the molecule are connected by a single bond or a divalent group not containing a hetero atom is an aryl represented by the following general formula (4): 5.
- R 7 to R 18 are a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, or a linear or branched alkyl having 1 to 6 carbon atoms which may have a substituent.
- r 7, r 8, r 11 , r 14, r 17, r 18 represents an integer of 0 to 5, an integer of r 9, r 10, r 12 , r 13, r 15, r 16 0-4 R 7 , r 8 , r 11 , r 14 , r 17 , r 18 are integers of 2 to 5, or r 9 , r 10 , r 12 , r 13 , r 15 , r 16 is 2
- a plurality of R 7 to R 18 bonded to the same benzene ring may be the same or different from each other, and are bonded via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. And may be bonded to each other to form a ring.
- L 2 , L 3 and L 4 may be the same or different and each represents a divalent linking group or a single bond.
- a 1 is a divalent group of a substituted or unsubstituted aromatic hydrocarbon, a divalent group of a substituted or unsubstituted aromatic heterocyclic ring, a substituted or unsubstituted condensed polycyclic aromatic divalent group, Or a single bond
- B represents a substituted or unsubstituted aromatic heterocyclic group
- C represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted Represents a condensed polycyclic aromatic group
- D may be the same or different from each other, and is a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a trifluoromethyl group, a straight chain having 1 to 6 carbon atoms Or a branched alkyl group, a substituted or unsubstituted aromatic hydrocarbon
- Ar 8 represents a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group
- Ar 9 , Ar 10 May be the same or different and each represents a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted condensed polycyclic aromatic group;
- Ar 11 represents a substituted or unsubstituted aromatic heterocyclic group
- R 19 to R 22 may be the same or different, and may be a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, A trifluoromethyl group, a linear or branched alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted group It represents a condensed polycyclic aromatic group, and R 19 to R 22 and Ar 11 may be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- a 2 represents a divalent group of a substituted or unsubstituted aromatic hydrocarbon, a divalent group of a substituted or unsubstituted aromatic heterocyclic ring, a substituted or unsubstituted condensed polycyclic aromatic divalent group, Or represents a single bond, and Ar 12 and Ar 13 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, substituted or unsubstituted condensed poly groups.
- a ring aromatic group which may be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and R 23 to R 26 may be the same or different from each other;
- a ring may be bonded to each other via a bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and a benzene ring to which R 27 to R 29 are bonded to a substituted or unsubstituted methylene group.
- a ring may be formed by bonding to each other via a group, an oxygen atom, a sulfur atom, or a monosubstituted amino group.
- R 30 and R 31 may be the same or different from each other, and may have a substituent, a linear or branched alkyl group having 1 to 6 carbon atoms, or a substituent.
- a ring may be formed by bonding to each other via an oxygen atom, a sulfur atom, or a monosubstituted amino group.
- aromatic hydrocarbon group aromatic heterocyclic group
- substituted aromatic hydrocarbon group “substituted aromatic heterocyclic group” or “substituted condensed polycyclic aromatic group” represented by Ar 1 to Ar 4 in the general formula (1), Specifically, deuterium atom, cyano group, nitro group; halogen atom such as fluorine atom, chlorine atom, bromine atom, iodine atom; methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, A linear or branched alkyl group having 1 to 6 carbon atoms such as isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group; methyloxy group, ethyloxy group, propyl Straight or branched alkyloxy group having 1 to 6 carbon atoms such as oxy group;
- the exemplified substituents may be substituted. These substituents may be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- Examples of the “body group” include a fluorine atom, a chlorine atom, a bromine atom, a cyano group, a trifluoromethyl group, a nitro group, and the like.
- Aromamatics in the “aromatic hydrocarbon group, aromatic heterocyclic group, or condensed polycyclic aromatic group having an electron acceptor group as a substituent” represented by Ar 5 to Ar 7 in the general formula (2)
- the “hydrocarbon group”, “aromatic heterocyclic group” or “condensed polycyclic aromatic group” includes “substituted or unsubstituted aromatic carbonized groups represented by Ar 1 to Ar 4 in the general formula (1)”.
- lifted These groups may have a substituent other than the electron acceptor group.
- Specific examples of the substituent include a deuterium atom; a phenyl group, a biphenylyl group, a terphenylyl group, a naphthyl group, and an anthracenyl group.
- Aromatic hydrocarbon groups or condensed polycyclic aromatic groups such as phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group; pyridyl group, pyrimidinyl group, triazinyl group, thienyl group, Furyl, pyrrolyl, quinolyl, isoquinolyl, benzofuranyl, benzothienyl, indolyl, carbazolyl, benzoxazolyl, benzothiazolyl, quinoxalinyl, benzoimidazolyl, pyrazolyl, dibenzofuranyl, dibenzothienyl Group, carbolinyl group, etc.
- substituents may further the exemplified substituents or electron acceptor group, it may be substituted. These substituents may be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent represented by R 1 to R 6 in the general formula (3), “having a substituent In the “cycloalkyl group having 5 to 10 carbon atoms” or “straight or branched alkenyl group having 2 to 6 carbon atoms which may have a substituent”.
- Examples of “straight or branched alkyl group of 6”, “cycloalkyl group of 5 to 10 carbon atoms” or “straight chain or branched alkenyl group of 2 to 6 carbon atoms” specifically include , Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group, cyclopentyl group, cyclo A xyl group, a 1-adamantyl group, a 2-adamantyl group, a vinyl group, an allyl group, an isopropenyl group, a 2-butenyl group, and the like.
- These groups are a single bond, a substituted or unsubstituted methylene group, A ring may be formed by bonding to each other
- a linear or branched alkyl group having 1 to 6 carbon atoms having a substituent represented by R 1 to R 6 in formula (3), “5 to 10 carbon atoms having a substituent”
- Specific examples of the “substituent” in the “cycloalkyl group of” or “straight-chain or branched alkenyl group having 2 to 6 carbon atoms having a substituent” include a deuterium atom, a cyano group, and a nitro group; Halogen atoms such as fluorine atom, chlorine atom, bromine atom and iodine atom; linear or branched alkyloxy group having 1 to 6 carbon atoms such as methyloxy group, ethyloxy group and propyloxy group; Alkenyl groups; aryloxy groups such as phenyloxy groups and tolyloxy groups; arylalkyloxy groups such as benzyloxy groups and phenethyloxy groups; phenyl groups and bif
- these groups may have a substituent, and the substituent is represented by R 1 to R 6 represented by the general formula (3).
- R 1 to R 6 represented by the general formula (3).
- substituted cycloalkyl group having 5 to 10 carbon atoms or “substituted straight chain or branched alkenyl group having 2 to 6 carbon atoms”
- lifted The thing similar to what was shown regarding "substituent” can be mention
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “ring aromatic group” is represented by Ar 1 to Ar 4 in the general formula (1).
- Aromatic hydrocarbon group “aromatic” in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” And the same as those shown for the “heterocyclic group” or “condensed polycyclic aromatic group”, and these groups can form a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. And may be bonded to each other to form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- aryloxy group in the “substituted or unsubstituted aryloxy group” represented by R 1 to R 6 in the general formula (3) include a phenyloxy group, a biphenylyloxy group, a terphenyl group.
- Examples include ryloxy group, naphthyloxy group, anthracenyloxy group, phenanthrenyloxy group, fluorenyloxy group, indenyloxy group, pyrenyloxy group, perylenyloxy group, and the like. They may be bonded to each other via a bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- r 1 to r 6 may be the same or different, r 1 , r 2 , r 5 and r 6 represent an integer of 0 to 5, and r 3 and r 4 are 0 to 4 Represents an integer.
- R 1 to R 2 bonded to the same benzene ring R 6 may be the same or different from each other, and may be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- Examples of the “divalent linking group” represented by L 1 in the general formula (3) include a methylene group, an ethylene group, an n-propylene group, an isopropylene group, an n-butylene group, an isobutylene group, and a tert-butylene group.
- Linear or branched alkylene group having 1 to 6 carbon atoms such as n-pentylylene group, isopentylylene group, neopentylylene group and n-hexylylene group; cyclopentylylene group, cyclohexylylene group and adamantylylene group “C5-C10 cycloalkylene group” such as; vinylene group, arylene group, isopropenylene group, butenylene group, etc.
- C2-C6 linear or branched alkenylene group benzene Removal of two hydrogen atoms from aromatic hydrocarbons such as biphenyl, terphenyl and tetrakisphenyl
- Aromaatic hydrocarbon divalent group benzene Removal of two hydrogen atoms from aromatic hydrocarbons such as biphenyl, terphenyl and tetrakisphenyl
- Aromaatic hydrocarbon divalent group used polycyclic aromatic” formed by removing two hydrogen atoms from condensed polycyclic aromatics such as naphthalene, anthracene, acenaphthalene, fluorene, phenanthrene, indane, pyrene, triphenylene, etc.
- a divalent group such as “a divalent group of a group”.
- these divalent groups may have a substituent, such as “a linear or branched alkylene group having 1 to 6 carbon atoms”, “cycloalkylene group having 5 to 10 carbon atoms” or As a substituent of “a straight-chain or branched alkenylene group having 2 to 6 carbon atoms”, represented by R 1 to R 6 in the general formula (3), 6 linear or branched alkyl group ”,“ substituted cycloalkyl group having 5 to 10 carbon atoms ”or“ substituted linear or branched alkenyl group having 2 to 6 carbon atoms ” Examples of the substituents of the “aromatic hydrocarbon divalent group” or “condensed polycyclic aromatic divalent group” are the same as those described for the “substituent” in the “group”.
- Ar 1 in the formula (1) to represented by r 4 "substituted aromatic hydrocarbon group", it is given the same as those shown for the "substituent” in the "substituted aromatic heterocyclic group” or "substituted condensed polycyclic aromatic group” A possible embodiment can also be given.
- a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent represented by R 7 to R 18 in the general formula (4), “having a substituent In the “cycloalkyl group having 5 to 10 carbon atoms” or “straight or branched alkenyl group having 2 to 6 carbon atoms which may have a substituent”.
- the “6 linear or branched alkyl group”, “C 5 -C 10 cycloalkyl group” or “C 2 -C 6 linear or branched alkenyl group” includes the above general formula The linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent, represented by R 1 to R 6 in (3); Or a cycloalkyl group having 5 to 10 carbon atoms.
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 7 to R 18 in the general formula (4), or “substituted or unsubstituted condensed hydrocarbon group”
- aromatic hydrocarbon group “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “ring aromatic group” is represented by Ar 1 to Ar 4 in the general formula (1).
- Aromatic hydrocarbon group “aromatic” in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” And the same as those shown for the “heterocyclic group” or “condensed polycyclic aromatic group”, and these groups can form a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. And may be bonded to each other to form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- the “aryloxy group” in the “substituted or unsubstituted aryloxy group” represented by R 7 to R 18 in the general formula (4) is represented by R 1 to R 6 in the general formula (3).
- lifted can also mention the same thing.
- r 7 to r 18 may be the same or different, and r 7 , r 8 , r 11 , r 14 , r 17 , r 18 represent an integer of 0 to 5, r 9 , r 10 , r 12 , r 13 , r 15 , r 16 each represents an integer of 0-4.
- R 7 to R 18 bonded to the same benzene ring may be the same or different from each other, and may be mutually connected via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. They may combine to form a ring.
- the “divalent linking group” represented by L 2 , L 3 , and L 4 in the general formula (4) is “the divalent linking group” represented by L 1 in the general formula (3).
- lifted The thing similar to what was shown about can be mention
- Specific examples of the “aromatic hydrocarbon”, “aromatic heterocycle” or “fused polycyclic aromatic” include benzene, biphenyl, terphenyl, tetrakisphenyl, styrene, naphthalene, anthracene, acenaphthalene, fluorene, phenanthrene.
- examples include offene, indoline, carbazole, carboline, benzoxazole, benzothiazole, quinoxaline, benzimidazole, pyrazole, dibenzofuran, dibenzothiophene, naphthyridine, phenanthroline, and acridine.
- the “unsubstituted fused polycyclic aromatic divalent group” is a divalent group formed by removing two hydrogen atoms from the above “aromatic hydrocarbon”, “aromatic heterocycle” or “fused polycyclic aromatic”. To express. In addition, these divalent groups may have a substituent.
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 4 in the general formula (1)
- substituted The same thing as what was shown regarding the "substituent” in an "aromatic heterocyclic group” or a “substituted condensed polycyclic aromatic group” can be mention
- aromatic heterocyclic group in the “substituted or unsubstituted aromatic heterocyclic group” represented by B in the general formula (5) include triazinyl group, pyridyl group, pyrimidinyl group, furyl group.
- substituted aromatic heterocyclic group represented by B in the general formula (5)
- substituents in the “substituted aromatic heterocyclic group” represented by B in the general formula (5) include deuterium atom, cyano group, nitro group; fluorine atom, chlorine atom, bromine atom Halogen atoms such as iodine atom; methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group A linear or branched alkyl group having 1 to 6 carbon atoms such as a cycloalkyl group having 5 to 10 carbon atoms such as a cyclopentyl group, a cyclohexyl group, a 1-adamantyl group or a 2-adamantyl group; a
- Ar 1 to Ar 4 “substituted or non-substituted” represented by Ar 1 to Ar 4 in the general formula (1)
- Or“ fused polycyclic aromatic group ” can be mentioned, and when these groups are bonded to the same anthracene ring (when q is 2), May be the same or different.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- linear or branched alkyl group having 1 to 6 carbon atoms represented by D in the general formula (5) include a methyl group, an ethyl group, an n-propyl group, and isopropyl.
- a plurality of D may be the same or different from each other, and these groups are bonded to each other through a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring. Also good.
- aromatic hydrocarbon group “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the above formula
- a condensed polycyclic aromatic group, and a plurality of D may be the same as or different from each other, and these groups may be a single bond, substituted or unsubstituted.
- Ar 8 , Ar 9 , Ar 10 in the general formula (6)
- substitution in “substituted aromatic hydrocarbon group”, “substituted aromatic heterocyclic group” or “substituted condensed polycyclic aromatic group” represented by Ar 8 , Ar 9 , Ar 10 in formula (6)
- group include deuterium atom, cyano group, nitro group; halogen atom such as fluorine atom, chlorine atom, bromine atom, iodine atom; methyl group, ethyl group, n-propyl group, isopropyl group, n- A linear or branched alkyl group having 1 to 6 carbon atoms such as butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group; methyloxy group, ethyloxy group A linear or branched alkyloxy group having 1 to 6 carbon atoms such as a propyloxy
- substituents may be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring, and these substituents and the substituent are bonded.
- Ar 8 , Ar 9 or Ar 10 may be bonded to each other via an oxygen atom or a sulfur atom to form a ring.
- aromatic heterocyclic group in the “substituted or unsubstituted aromatic heterocyclic group” represented by Ar 11 in the structural formula (7), specifically, a triazinyl group, a pyridyl group, a pyrimidinyl group, Furyl, pyrrolyl, thienyl, quinolyl, quinolyl, isoquinolyl, benzofuranyl, benzothienyl, indolyl, carbazolyl, benzoxazolyl, benzothiazolyl, quinoxalinyl, benzimidazolyl, pyrazolyl, dibenzofuranyl , Groups such as dibenzothienyl group, azafluorenyl group, diazafluorenyl group, naphthyridinyl group, phenanthrolinyl group, acridinyl group, carbolinyl group, azaspirobifluorenyl group, diazaspirobiflu
- these groups may have a substituent, and as the substituent, a “substituted aromatic hydrocarbon group” represented by Ar 8 , Ar 9 , Ar 10 in the general formula (6), “ The same thing as what was shown regarding the "substituent” in a "substituted aromatic heterocyclic group” or a “substituted condensed polycyclic aromatic group” can be mention
- the “straight or branched alkyl group having 1 to 6 carbon atoms” represented by R 19 to R 22 in the structural formula (7) include a methyl group, an ethyl group, n- Propyl, i-propyl, n-butyl, 2-methylpropyl, t-butyl, n-pentyl, 3-methylbutyl, tert-pentyl, n-hexyl, iso-hexyl and tert -A hexyl group can be mentioned.
- these groups may have a substituent, and as the substituent, a “substituted aromatic hydrocarbon group” represented by Ar 8 , Ar 9 , Ar 10 in the general formula (6), “ The same thing as what was shown regarding the "substituent” in a "substituted aromatic heterocyclic group” or a “substituted condensed polycyclic aromatic group” can be mention
- a 2 in the general formula (8) “a divalent group of a substituted or unsubstituted aromatic hydrocarbon”, “a divalent group of a substituted or unsubstituted aromatic heterocyclic ring” or “substituted or unsubstituted “Substituted or unsubstituted aromatic hydrocarbon”, “substituted or unsubstituted aromatic heterocycle” or “substituted or unsubstituted condensed polycyclic aromatic” in “substituted condensed polycyclic aromatic divalent group”
- the “aromatic hydrocarbon”, “aromatic heterocycle” or “fused polycyclic aromatic” the “substituted or unsubstituted aromatic hydrocarbon” represented by A 1 in the general formula (5) is used.
- Substituted or unsubstituted aromatic hydrocarbon in “divalent group”, “divalent group of substituted or unsubstituted aromatic heterocyclic ring” or “substituted or unsubstituted condensed polycyclic aromatic divalent group”, “Substituted or unsubstituted aromatic heterocycle” or “Substituted or unsubstituted "Aromatic hydrocarbon” condensed polycyclic aromatic ", and can be exemplified those” aromatic heterocycle "or” similar to that shown with respect to the condensed polycyclic aromatic ".
- a divalent group of a substituted or unsubstituted aromatic hydrocarbon “a divalent group of a substituted or unsubstituted aromatic heterocycle” represented by A 2 in the general formula (8), or “substituted or The “unsubstituted fused polycyclic aromatic divalent group” is a divalent group formed by removing two hydrogen atoms from the above “aromatic hydrocarbon”, “aromatic heterocycle” or “fused polycyclic aromatic”. To express. In addition, these divalent groups may have a substituent.
- substituted aromatic hydrocarbon group represented by Ar 1 to Ar 4 in the general formula (1)
- substituted The same thing as what was shown regarding the "substituent” in an "aromatic heterocyclic group” or a “substituted condensed polycyclic aromatic group” can be mention
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by Ar 12 or Ar 13 in the general formula (8), or “substituted or unsubstituted condensed poly group”
- aromatic hydrocarbon group “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “ring aromatic group” is represented by Ar 1 to Ar 4 in the general formula (1).
- Aromatic hydrocarbon group “aromatic” in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group”
- Ar 12 and Ar 13 are a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. Bond to each other via It may be.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent represented by R 23 to R 29 in the general formula (8), “having a substituent In the “cycloalkyl group having 5 to 10 carbon atoms” or “straight or branched alkenyl group having 2 to 6 carbon atoms which may have a substituent”.
- Examples of “straight or branched alkyl group of 6”, “cycloalkyl group of 5 to 10 carbon atoms” or “straight chain or branched alkenyl group of 2 to 6 carbon atoms” specifically include Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group, cyclopentyl group, A hexyl group, a 1-adamantyl group, a 2-adamantyl group, a vinyl group, an allyl group, an isopropenyl group, a 2-butenyl group, and the like.
- These groups are a single bond, a substituted or unsubstituted methylene group,
- a ring may be formed by bonding to each other via an oxygen atom or a sulfur atom, and these groups (R 23 to R 29 ) and a benzene ring to which these groups (R 23 to R 29 ) are directly bonded, And may be bonded to each other via a linking group such as a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monosubstituted amino group to form a ring.
- a linear or branched alkyl group having 1 to 6 carbon atoms having a substituent represented by R 23 to R 29 in the general formula (8), “5 to 10 carbon atoms having a substituent”
- Specific examples of the “substituent” in the “cycloalkyl group of” or “straight-chain or branched alkenyl group having 2 to 6 carbon atoms having a substituent” include a deuterium atom, a cyano group, and a nitro group; Halogen atoms such as fluorine atom, chlorine atom, bromine atom and iodine atom; linear or branched alkyloxy group having 1 to 6 carbon atoms such as methyloxy group, ethyloxy group and propyloxy group; Alkenyl group; aryloxy group such as phenyloxy group and tolyloxy group; arylalkyloxy group such as benzyloxy group and phenethyloxy group; phenyl group;
- groups these groups to each other is a single bond, a substituted or unsubstituted methylene group, linked to each other through an oxygen atom or a sulfur atom may form a ring, these groups (R 23 To R 29 ) and a benzene ring to which these groups (R 23 to R 29 ) are directly bonded, via a linking group such as a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monosubstituted amino group. May be combined with each other to form a ring.
- These groups may have a substituent, as the substituent, the formula (8) straight of R 23 ⁇ 1 -C having "substituent represented by R 29 6 in In “chain or branched alkyl group”, “substituted cycloalkyl group having 5 to 10 carbon atoms” or “substituted straight chain or branched alkenyl group having 2 to 6 carbon atoms”
- the thing similar to what was shown regarding "substituent” can be mention
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 23 to R 29 in the general formula (8), or “substituted or unsubstituted condensed hydrocarbon group”
- aromatic hydrocarbon group “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “ring aromatic group” is represented by Ar 1 to Ar 4 in the general formula (1).
- Aromatic hydrocarbon group “aromatic” in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” And the same as those shown for the “heterocyclic group” or “condensed polycyclic aromatic group”, and these groups can form a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. May be bonded to each other to form a ring.
- R 23 ⁇ R 29 is a benzene ring bonded directly, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, a monosubstituted amino group
- a ring may be formed by bonding to each other through a linking group such as.
- the “substituent” in the “ring aromatic group” include deuterium atom, cyano group, nitro group; halogen atom such as fluorine atom, chlorine atom, bromine atom, iodine atom; methyl group, ethyl group, n Linear or branched having 1 to 6 carbon atoms such as -propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group A linear or branched alkyloxy group having 1 to 6 carbon atoms
- aryloxy group in the “substituted or unsubstituted aryloxy group” represented by R 23 to R 29 in the general formula (8) include a phenyloxy group, a biphenylyloxy group, a terphenyl group.
- Examples include ryloxy group, naphthyloxy group, anthracenyloxy group, phenanthrenyloxy group, fluorenyloxy group, indenyloxy group, pyrenyloxy group, and perylenyloxy group.
- a ring may be bonded to each other via a bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom, and these groups (R 23 to R 29 ) and these groups (R 23 to R 29) ) Is directly bonded to the benzene ring via a linking group such as a substituted or unsubstituted methylene group, oxygen atom, sulfur atom or monosubstituted amino group. It may be bonded to each other to form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by R 23 to R 29 in the general formula (8), “substituted aromatic”
- lifted the substituent
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by R 23 to R 29 in the general formula (8), “substituted aromatic”
- lifted the substituent
- the “disubstituted amino group substituted by a group selected from an aromatic hydrocarbon group, an aromatic heterocyclic group or a condensed polycyclic aromatic group” represented by R 23 to R 26 in the general formula (8) is: these groups (R 23 ⁇ R 26) to each other, these groups (R 23 ⁇ R 26) has "aromatic hydrocarbon group", the "aromatic heterocyclic group” or “condensed polycyclic aromatic group” May be bonded to each other via a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring, and these groups (R 23 to R 26 ) and these groups (R 23 with the benzene ring to which ⁇ R 26) is attached directly to the groups (R 23 ⁇ R 26) has "aromatic hydrocarbon group", "aromatic heterocyclic group” or "condensed polycyclic aromatic A substituted or unsubstituted methylene group or oxygen atom Sulfur atom
- a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent represented by R 30 or R 31 in the general formula (8), “having a substituent In the “cycloalkyl group having 5 to 10 carbon atoms” or “straight or branched alkenyl group having 2 to 6 carbon atoms which may have a substituent”.
- the “6 linear or branched alkyl group”, “C 5 -C 10 cycloalkyl group” or “C 2 -C 6 linear or branched alkenyl group” includes the above general formula
- the linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent represented by R 23 to R 29 in (8), “having a substituent; C5 to C10 cycloalkyl Or “a linear or branched alkyl group having 1 to 6 carbon atoms” in “optionally substituted linear or branched alkenyl group having 2 to 6 carbon atoms”, “ Examples thereof include those similar to those shown for the “cycloalkyl group having 5 to 10 carbon atoms” or the “straight or branched alkenyl group having 2 to 6 carbon atoms”.
- a ring may be formed by bonding to each other via a linking group such as a bond, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monosubstituted amino group.
- These groups may have a substituent, as the substituent, the formula (8) straight of R 23 ⁇ 1 -C having "substituent represented by R 29 6 in In "chain or branched alkyl group", “substituted cycloalkyl group having 5 to 10 carbon atoms” or “substituted straight chain or branched alkenyl group having 2 to 6 carbon atoms"
- the thing similar to what was shown regarding "substituent” can be mention
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 30 or R 31 in the general formula (8), or “substituted or unsubstituted condensed poly group”
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “ring aromatic group” is represented by Ar 1 to Ar 4 in the general formula (1).
- Aromatic hydrocarbon group “aromatic” in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” And the same as those shown for the ⁇ group heterocyclic group '' or ⁇ fused polycyclic aromatic group '', and these groups are a single bond, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, Linked to each other through a linking group such as a mono-substituted amino group. It may form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by R 23 to R 29 in the general formula (8), “substituted aromatic”
- lifted the substituent
- the “aryloxy group” in the “substituted or unsubstituted aryloxy group” represented by R 30 and R 31 in the general formula (8) is represented by R 23 to R 29 in the general formula (8).
- lifted These groups are a single bond, a substituted or unsubstituted methylene group, oxygen atom , A sulfur atom, a monosubstituted amino group and the like may be bonded to each other to form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by R 23 to R 29 in the general formula (8), “substituted aromatic”
- lifted the substituent
- the “substituent” in the linking group “monosubstituted amino group” in the general formula (8) may have a “substituent” represented by R 23 to R 29 in the general formula (8).
- a linear or branched alkyl group having 1 to 6 carbon atoms in “group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group”, " Examples thereof include those similar to those shown for the “cycloalkyl group having 5 to 10 carbon atoms”, “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group”. .
- these groups may have a substituent, such as “a linear or branched alkyl group having 1 to 6 carbon atoms having a substituent”, “5 to 10 carbon atoms having a substituent”.
- Ar 1 to Ar 4 in the general formula (1) are “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted oxygen-containing aromatic heterocyclic group” or “substituted or unsubstituted condensed group”.
- a “polycyclic aromatic group” is preferable, and a phenyl group, a biphenylyl group, a terphenylyl group, a naphthyl group, a phenanthrenyl group, a fluorenyl group, and a dibenzofuranyl group are more preferable.
- the “substituent” in the “substituted aromatic hydrocarbon group”, “substituted aromatic heterocyclic group” or “substituted condensed polycyclic aromatic group” represented by Ar 1 to Ar 4 is: , A deuterium atom, “an optionally substituted linear or branched alkyl group having 1 to 6 carbon atoms”, “an optionally substituted carbon atom having 2 to 6 carbon atoms” ⁇ Straight or branched alkenyl group '', ⁇ substituted or unsubstituted aromatic hydrocarbon group '' or ⁇ substituted or unsubstituted condensed polycyclic aromatic group '' is preferable, deuterium atom, phenyl group, biphenylyl group, A naphthyl group and a vinyl group are more preferable. It is also preferred that these groups are bonded to each other through a single bond to form a condensed aromatic ring.
- the hole injection layer of the organic EL device of the present invention as an electron acceptor doped into the arylamine compound represented by the general formula (1), trisbromophenylamine hexachloroantimony, tetracyanoquinone dimethane (TCNQ) ), 2,3,5,6-tetrafluoro-tetracyano-1,4-benzoquinone dimethane (F4TCNQ), a raradiene derivative (see, for example, JP-A 2011-1000062), and the like.
- Radialene derivatives represented by (2) are preferably used.
- an “aromatic hydrocarbon group”, “condensed polycyclic aromatic group”, or pyridyl group is preferable, and a phenyl group, a biphenylyl group, a terphenylyl group, a naphthyl group, A phenanthrenyl group, a fluorenyl group, and a pyridyl group are more preferable, and the “electron acceptor group” is preferably a fluorine atom, a chlorine atom, a cyano group, or a trifluoromethyl group.
- Ar 5 to Ar 7 are preferably at least partially, preferably completely substituted with “electron acceptor groups”.
- Ar 5 to Ar 7 in the general formula (2) include a tetrafluoropyridyl group, a tetrafluoro- (trifluoromethyl) phenyl group, a cyano-tetrafluorophenyl group, a dichloro-difluoro- (trifluoromethyl) phenyl group, A phenyl group or a pyridyl group completely substituted with a fluorine atom such as a pentafluorophenyl group, a chlorine atom, a cyano group, or a trifluoromethyl group is preferred.
- R 1 to R 6 in the general formula (3) are each a deuterium atom, “an optionally substituted linear or branched alkyl group having 1 to 6 carbon atoms”, “substituent” A linear or branched alkenyl group having 2 to 6 carbon atoms ",” substituted or unsubstituted aromatic hydrocarbon group "or” substituted or unsubstituted condensed polycyclic aromatic group optionally having Are preferable, and a deuterium atom, a phenyl group, a biphenylyl group, a naphthyl group, and a vinyl group are more preferable, and these groups are also preferably bonded to each other through a single bond to form a condensed aromatic ring.
- a deuterium atom, a phenyl group, and a biphenylyl group are preferable.
- r 1 to r 6 are preferably integers of 0 to 3, and more preferably integers of 0 to 2.
- the “divalent linking group” represented by L 1 in the general formula (3) a methylene group, a “cycloalkylene group having 5 to 10 carbon atoms”, a “divalent group of aromatic hydrocarbon”, A “condensed polycyclic aromatic divalent group” or a single bond is preferable, and a divalent group or a single bond represented by the following structural formulas (B) to (G) is more preferable, which is represented by the following structural formula (B).
- the divalent group is particularly preferred.
- n1 represents an integer of 1 to 3
- R 7 to R 18 in the general formula (4) are each a deuterium atom, “an optionally substituted linear or branched alkyl group having 1 to 6 carbon atoms”, “substituent” A linear or branched alkenyl group having 2 to 6 carbon atoms ",” substituted or unsubstituted aromatic hydrocarbon group "or” substituted or unsubstituted condensed polycyclic aromatic group optionally having Are preferable, and a deuterium atom, a phenyl group, a biphenylyl group, a naphthyl group, and a vinyl group are more preferable, and these groups are also preferably bonded to each other through a single bond to form a condensed aromatic ring.
- a deuterium atom, a phenyl group, and a biphenylyl group are preferable.
- r 7 to r 18 are preferably integers of 0 to 3, more preferably integers of 0 to 2.
- Examples of the “divalent linking group” represented by L 2 to L 4 in the general formula (4) include a methylene group, a “cycloalkylene group having 5 to 10 carbon atoms”, and “divalent aromatic hydrocarbons”.
- Group ",” condensed polycyclic aromatic divalent group "or a single bond is preferable, and a divalent group or a single bond represented by the structural formulas (B) to (G) is more preferable.
- aromatic heterocyclic group in the “substituted or unsubstituted aromatic heterocyclic group” represented by B in the general formula (5), a pyridyl group, a pyrimidinyl group, a pyrrolyl group, a quinolyl group, an isoquinolyl group, Nitrogen-containing aromatic heterocyclic groups such as indolyl group, carbazolyl group, benzoxazolyl group, benzothiazolyl group, quinoxalinyl group, benzoimidazolyl group, pyrazolyl group, and carbolinyl group are preferred, pyridyl group, pyrimidinyl group, quinolyl group, isoquinolyl group Indolyl group, pyrazolyl group, benzimidazolyl group, and carbolinyl group are more preferable.
- p and q maintain the relationship that the sum of p and q (p + q) is 9, p represents 7 or 8, and q represents 1 or 2.
- a 1 in the general formula (5) “a divalent group of a substituted or unsubstituted aromatic hydrocarbon” or “a divalent group of a substituted or unsubstituted condensed polycyclic aromatic” is preferable, and benzene, biphenyl , Naphthalene, or a divalent group formed by removing two hydrogen atoms from phenanthrene is more preferable.
- a compound having an anthracene ring structure represented by the general formula (5) a compound having an anthracene ring structure represented by the following general formula (5a), general formula (5b) or general formula (5c) is more preferably used. It is done.
- a 1 is a divalent group of a substituted or unsubstituted aromatic hydrocarbon, a divalent group of a substituted or unsubstituted aromatic heterocyclic ring, a substituted or unsubstituted condensed polycyclic aromatic divalent group, Or represents a single bond
- Ar 14 , Ar 15 , and Ar 16 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted
- R 32 to R 38 may be the same as or different from each other and have a hydrogen atom, deuterium atom, fluorine atom, chlorine atom, cyano group, nitro group, or substituent; May have a linear or branched alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms which may have
- Straight chain with 2 to 6 carbon atoms Is a branched alkenyl group, an optionally substituted linear or branched alkyloxy group having 1 to 6 carbon atoms, and an optionally substituted carbon atom having 5 to 10 carbon atoms.
- X 1 , X 2 , X 3 and X 4 are each a carbon atom or a nitrogen atom.
- X 1 , X 2 , X 3 and X 4 is a nitrogen atom, and in this case, the nitrogen atom does not have a hydrogen atom or substituent of R 32 to R 35 And
- a 1 is a divalent group of a substituted or unsubstituted aromatic hydrocarbon, a divalent group of a substituted or unsubstituted aromatic heterocyclic ring, a substituted or unsubstituted condensed polycyclic aromatic divalent group, Or represents a single bond, Ar 17 , Ar 18 , Ar 19 may be the same or different from each other, and are substituted or unsubstituted aromatic hydrocarbon groups, substituted or unsubstituted aromatic heterocyclic groups, or substituted or unsubstituted Represents a substituted fused polycyclic aromatic group.
- a 1 is a divalent group of a substituted or unsubstituted aromatic hydrocarbon, a divalent group of a substituted or unsubstituted aromatic heterocyclic ring, a substituted or unsubstituted condensed polycyclic aromatic divalent group, Or represents a single bond, and Ar 20 , Ar 21 , Ar 22 may be the same or different from each other, and are a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted group.
- R 39 represents a substituted condensed polycyclic aromatic group, and R 39 is a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, or a straight chain having 1 to 6 carbon atoms which may have a substituent.
- a linear or branched alkyloxy group having 1 to 6 carbon atoms, an optionally substituted cycloalkyloxy group having 5 to 10 carbon atoms, a substituted or unsubstituted aromatic carbonization Represents a hydrogen group, a substituted or unsubstituted aromatic heterocyclic group, a substituted or unsubstituted condensed polycyclic aromatic group, or a substituted or unsubstituted aryloxy group.
- the “aromatic hydrocarbon group” in the “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” represented by , “Aromatic heterocyclic group” or “fused polycyclic aromatic group” are the same as those described above.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- a linear or branched alkyl group having 1 to 6 carbon atoms which may have a substituent represented by R 32 to R 38 in the general formula (5a), “having a substituent In the “cycloalkyl group having 5 to 10 carbon atoms” or “straight or branched alkenyl group having 2 to 6 carbon atoms which may have a substituent”.
- Examples of “straight or branched alkyl group of 6”, “cycloalkyl group of 5 to 10 carbon atoms” or “straight chain or branched alkenyl group of 2 to 6 carbon atoms” specifically include Methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, tert-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group, cyclopentyl group, A cyclohexyl group, a 1-adamantyl group, a 2-adamantyl group, a vinyl group, an allyl group, an isopropenyl group, a 2-butenyl group, etc., and these groups are a single bond, a substituted or unsubstituted methylene group, A ring may be formed by bonding to each other via an oxygen
- a linear or branched alkyl group having 1 to 6 carbon atoms having a substituent represented by R 32 to R 38 in the general formula (5a), “5 to 10 carbon atoms having a substituent”
- Specific examples of the “substituent” in the “cycloalkyl group of” or “straight-chain or branched alkenyl group having 2 to 6 carbon atoms having a substituent” include a deuterium atom, a cyano group, and a nitro group; Halogen atoms such as fluorine atom, chlorine atom, bromine atom and iodine atom; linear or branched alkyloxy group having 1 to 6 carbon atoms such as methyloxy group, ethyloxy group and propyloxy group; Alkenyl groups; aryloxy groups such as phenyloxy groups and tolyloxy groups; arylalkyloxy groups such as benzyloxy groups and phenethyloxy groups; phenyl groups Aroma
- these groups may have a substituent, and the substituent is represented by R 32 to R 38 in the general formula (5a).
- chain or branched alkyl group “substituted cycloalkyl group having 5 to 10 carbon atoms” or “substituted straight chain or branched alkenyl group having 2 to 6 carbon atoms”
- lifted The thing similar to what was shown regarding “substituent” can be mention
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” represented by R 32 to R 38 in the general formula (5a), or “substituted or unsubstituted condensed poly group”
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “ring aromatic group” is represented by Ar 1 to Ar 4 in the general formula (1).
- Aromatic hydrocarbon group “aromatic” in “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” And the same as those shown for the “heterocyclic group” or “condensed polycyclic aromatic group”, and these groups can form a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom. May be linked together to form a ring. .
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- the “aryloxy group” in the “substituted or unsubstituted aryloxy group” represented by R 32 to R 38 in the general formula (5a) is specifically a phenyloxy group, biphenylyloxy group, terphenyl Examples include ryloxy group, naphthyloxy group, anthracenyloxy group, phenanthrenyloxy group, fluorenyloxy group, indenyloxy group, pyrenyloxy group, and perylenyloxy group. They may be bonded to each other via a bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom to form a ring.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- X 1 , X 2 , X 3 , and X 4 represent a carbon atom or a nitrogen atom, and only one of X 1 , X 2 , X 3 , and X 4 is a nitrogen atom (the rest is Carbon atoms). In this case, the nitrogen atom does not have a hydrogen atom or substituent of R 32 to R 35 . That is, when X 1 is a nitrogen atom, R 32 is present, when X 2 is a nitrogen atom, R 33 is present, when X 3 is a nitrogen atom, R 34 is present, and when X 4 is a nitrogen atom, R 35 is absent.
- X 3 is preferably a nitrogen atom (X 1 , X 2 , and X 4 are carbon atoms). In this case, there is no hydrogen atom or substituent of R 34 . Moreover, it is preferable that the connecting position of the linking group L 1 is bonded to the position corresponding to the para position of the nitrogen atom of the pyridoindole ring.
- the “aromatic hydrocarbon group” in the “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” represented by , “Aromatic heterocyclic group” or “fused polycyclic aromatic group” are the same as those described above.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- the “aromatic hydrocarbon group” in the “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” represented by , “Aromatic heterocyclic group” or “fused polycyclic aromatic group” are the same as those described above.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- Examples of the “chain or branched alkyl group”, “cycloalkyl group having 5 to 10 carbon atoms” or “linear or branched alkenyl group having 2 to 6 carbon atoms” include those represented by the general formula (5a).
- R 32 to R 38 represent a “straight or branched alkyl group having 1 to 6 carbon atoms which may have a substituent”, “a carbon which may have a substituent”
- these groups may have a substituent, and the substituent is represented by R 32 to R 38 in the general formula (5a).
- a linear or branched alkyloxy group having 1 to 6 carbon atoms which may have a substituent represented by R 39 in the general formula (5c) or “having a substituent.
- alkyloxy group” can be mention
- these groups may have a substituent, and the substituent is represented by R 32 to R 38 in the general formula (5a).
- Substituted or unsubstituted aromatic hydrocarbon group “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” represented by R 39 in formula (5c)
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group” or “fused polycyclic aromatic group” in the “group” is represented by “substituted or substituted” represented by Ar 1 to Ar 4 in the general formula (1).
- Aromamatic hydrocarbon group “aromatic heterocycle” in “unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted aromatic heterocyclic group” or “substituted or unsubstituted condensed polycyclic aromatic group” Examples thereof are the same as those shown for “group” or “fused polycyclic aromatic group”.
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- the “aryloxy group” in the “substituted or unsubstituted aryloxy group” represented by R 39 in the general formula (5c) is represented by R 32 to R 38 in the general formula (5a).
- lifted The thing similar to what was shown regarding the "aryloxy group” in a “substituted or unsubstituted aryloxy group” can be mention
- these groups may have a substituent, and as the substituent, the “substituted aromatic hydrocarbon group” represented by Ar 1 to Ar 4 in the general formula (1), “substituted aromatic”
- lifted the “substituted aromatic”
- Ar 8 in the general formula (6) includes phenyl group, biphenylyl group, naphthyl group, anthracenyl group, acenaphthenyl group, phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group, Spirobifluorenyl group, or oxygen-containing aromatic heterocyclic group such as furyl group, benzofuranyl group, dibenzofuranyl group, or sulfur-containing aromatic heterocyclic group such as thienyl group, benzothienyl group, dibenzothienyl group A phenyl group, a biphenylyl group, a naphthyl group, a phenanthrenyl group, a fluorenyl group, a pyrenyl group, a fluoranthenyl group, a triphenylenyl group, a spir
- the phenyl group preferably has a substituted or unsubstituted condensed polycyclic aromatic group or a phenyl group as a substituent, and includes a naphthyl group, a phenanthrenyl group, a pyrenyl group, a fluoranthenyl group, a triphenylenyl group, More preferably, it has a substituent selected from a spirobifluorenyl group or a phenyl group, and the substituent of the phenyl group and the phenyl group are bonded to each other via an oxygen atom or a sulfur atom to form a ring. It is also preferable to form.
- Ar 9 in the general formula (6) includes a phenyl group having a substituent, a substituted or unsubstituted spirobifluorenyl group, or an oxygen-containing aromatic complex such as a furyl group, a benzofuranyl group, and a dibenzofuranyl group.
- a cyclic group, or a sulfur-containing aromatic heterocyclic group such as thienyl group, benzothienyl group, dibenzothienyl group is preferable.
- Condensed polycyclic aromatic groups such as aromatic hydrocarbon groups, naphthyl groups, acenaphthenyl groups, phenanthrenyl groups, fluorenyl groups, indenyl groups, pyrenyl groups, perylenyl groups, fluoranthenyl groups, triphenylenyl groups, spirobifluorenyl groups, or
- An oxygen-containing aromatic heterocyclic group such as a furyl group, a benzofuranyl group, a dibenzofuranyl group, or Sulfur-containing aromatic heterocyclic groups such as thienyl group, benzothienyl group and dibenzothienyl group are preferable, and phenyl group, naphthyl group, phenanthrenyl group, fluorenyl group, pyrenyl group, fluoranthenyl group, triphenylenyl group, spirobifluorene group A nyl group, a dibenzofuranyl group
- Ar 10 in the general formula (6) is a hydrogen atom, a phenyl group having a substituent, a substituted or unsubstituted spirobifluorenyl group, or an oxygen-containing group such as a furyl group, a benzofuranyl group, or a dibenzofuranyl group.
- An aromatic heterocyclic group, or a sulfur-containing aromatic heterocyclic group such as thienyl group, benzothienyl group, dibenzothienyl group is preferable.
- Condensed polycyclic aromatics such as aromatic hydrocarbon group, naphthyl group, acenaphthenyl group, phenanthrenyl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group, spirobifluorenyl group, etc.
- oxygen-containing aromatic complex such as furyl group, benzofuranyl group, dibenzofuranyl group A ring group or a sulfur-containing aromatic heterocyclic group such as thienyl group, benzothienyl group, dibenzothienyl group is preferable, and phenyl group, naphthyl group, phenanthrenyl group, fluorenyl group, pyrenyl group, fluoranthenyl group, triphenylenyl group, A spirobifluorenyl group, a dibenzofuranyl group, and a dibenzothienyl group are more preferable, and it is also preferable that a substituent of the phenyl group and the phenyl group are bonded to each other via an oxygen atom or a sulfur atom to form a ring.
- Ar 8 and Ar 9 are not the same.
- Ar 8 and Ar 9 are the same group, they may be different substituents or different substitution positions.
- Ar 9 and Ar 10 may be the same group, but may be easily crystallized by improving the symmetry of the whole molecule.
- Ar 9 And Ar 10 are preferably different groups, and Ar 9 and Ar 10 are not simultaneously hydrogen atoms.
- one of Ar 9 and Ar 10 is a hydrogen atom.
- Examples of the compound having a pyrimidine ring structure represented by the general formula (6) include compounds having a pyrimidine ring structure represented by the following general formula (6a) and general formula (6b), which have different bonding modes of substituents. .
- Ar 11 in the structural formula (7) is a triazinyl group, pyridyl group, pyrimidinyl group, pyrrolyl group, quinolyl group, isoquinolyl group, indolyl group, carbazolyl group, benzoxazolyl group, benzothiazolyl group, quinoxalinyl group, benzoimidazolyl group , Pyrazolyl group, azafluorenyl group, diazafluorenyl group, naphthyridinyl group, phenanthrolinyl group, acridinyl group, carbolinyl group, azaspirobifluorenyl group, diazaspirobifluorenyl group, etc.
- a ring group is preferred, and a triazinyl group, pyridyl group, pyrimidinyl group, quinolyl group, isoquinolyl group, indolyl group, quinoxalinyl group, azafluorenyl group, diazafluorenyl group, benzoimidazolyl group, naphthyridinyl group, phenanthrolinyl group, acridinyl Group, azaspirobifluorenyl group, diazaspirobifluorenyl group is more preferable, pyridyl group, pyrimidinyl group, quinolyl group, isoquinolyl group, indolyl group, azafluorenyl group, diazafluorenyl group, quinoxalinyl group, A benzoimidazolyl group, a naphthyridinyl group, a phenanthrolinyl group, an acridinyl group, an azaspir
- the Ar 11 bonding position on the benzene ring is a meta position with respect to the bonding position with the pyrimidine ring represented by the general formula (6) as shown in the following structural formula (7a). Is preferable from the viewpoint of the stability of the thin film.
- a 2 in the general formula (8) is preferably a “divalent group of a substituted or unsubstituted aromatic hydrocarbon” or a single bond, which is formed by removing two hydrogen atoms from benzene, biphenyl, or naphthalene.
- a valent group or a single bond is more preferable, and a single bond is particularly preferable.
- Ar 12 and Ar 13 in the general formula (8) are preferably a phenyl group, a biphenylyl group, a naphthyl group, a fluorenyl group, an indenyl group, a pyridyl group, a dibenzofuranyl group, and a pyridobenzofuranyl group.
- Ar 12 and Ar 13 in the general formula (8) are bonded to each other directly or through a substituent of the group, a single bond, a substituted or unsubstituted methylene group, an oxygen atom or a sulfur atom.
- a ring may be formed.
- At least one of R 23 to R 26 in the general formula (8) is “a disubstituted amino group substituted with a group selected from an aromatic hydrocarbon group, an aromatic heterocyclic group or a condensed polycyclic aromatic group”.
- the “aromatic hydrocarbon group”, “aromatic heterocyclic group”, and “condensed polycyclic aromatic group” include a phenyl group, a biphenylyl group, a naphthyl group, a fluorenyl group, and an indenyl group.
- a pyridyl group, a dibenzofuranyl group, and a pyridobenzofuranyl group are preferable.
- R 23 to R 26 are vinyl groups, and the two adjacent vinyl groups are bonded to each other through a single bond to form a condensed ring, Also preferred is an embodiment in which a naphthalene ring or a phenanthrene ring is formed together with a benzene ring to which R 23 to R 26 are bonded.
- any one of R 23 to R 26 is an “aromatic hydrocarbon group”, and a benzene ring to which R 23 to R 26 are bonded to a substituted or unsubstituted methylene group, An embodiment in which a ring is bonded to each other via an oxygen atom or a sulfur atom is preferable.
- the “aromatic hydrocarbon group” is a phenyl group, and the benzene ring to which R 23 to R 26 are bonded to each other via an oxygen atom or a sulfur atom to form a ring,
- An embodiment in which a dibenzofuran ring or a dibenzothiophene ring is formed with a benzene ring to which R 23 to R 26 are bonded is particularly preferable.
- any one of R 27 to R 29 is an “aromatic hydrocarbon group”, a benzene ring to which R 27 to R 29 are bonded, a substituted or unsubstituted methylene group, An embodiment in which a ring is bonded to each other via an oxygen atom or a sulfur atom is preferable.
- the “aromatic hydrocarbon group” is a phenyl group, and the benzene ring to which R 27 to R 29 are bonded to each other via an oxygen atom or a sulfur atom to form a ring, An embodiment in which a dibenzofuran ring or a dibenzothiophene ring is formed is particularly preferable.
- R 23 to R 29 are bonded to each other to form a ring, or R 23 as aspects - the benzene ring R 29 and R 23 - R 29 are bonded to form a ring together, the following general formula (8a-a), (8a -b), (8b-a), The embodiment represented by (8b-b), (8b-c), (8b-d), (8c-a) or (8c-b) is preferably used.
- X and Y may be the same or different and each represents an oxygen atom or a sulfur atom;
- a 2 , Ar 12 , Ar 13 , R 23 to R 26 , R 29 , R 30 to R 31 are (The meaning is as shown in the general formula (8).)
- R 30 and R 31 in the general formula (8) are “substituted or unsubstituted aromatic hydrocarbon group”, “substituted or unsubstituted oxygen-containing aromatic heterocyclic group” or “substituted or unsubstituted condensed group”.
- a “polycyclic aromatic group” is preferable, and a phenyl group, a naphthyl group, a phenanthrenyl group, a pyridyl group, a quinolyl group, an isoquinolyl group, and a dibenzofuranyl group are more preferable, and a phenyl group is particularly preferable.
- R 30 and R 31 are bonded to each other via a linking group such as a single bond, a substituted or unsubstituted methylene group, an oxygen atom, a sulfur atom, or a monosubstituted amino group to form a ring is preferable.
- a ring is bonded to each other through a bond is particularly preferable.
- the following general formula (8a-a1) , (8a-b1), (8b-a1), (8b-b1), (8b-c1), (8b-d1), (8c-a1) or (8c-b1) is preferably used. It is done.
- X and Y may be the same or different and each represents an oxygen atom or a sulfur atom, and A 2 , Ar 12 , Ar 13 , R 23 to R 26 , R 29 are represented by the general formula (8)). Represents the meaning as shown.
- the arylamine compound represented by the general formula (1) which is preferably used in the organic EL device of the present invention, can be used as a constituent material of the hole injection layer or the hole transport layer of the organic EL device. It is a compound that has a high hole mobility and is preferable as a material for the hole injection layer or the hole transport layer.
- the radicalene derivative represented by the general formula (2) which is preferably used in the organic EL device of the present invention, is used as a P-doping material for a material usually used for a hole injection layer or a hole transport layer of the organic EL device. Preferred compounds.
- An arylamine compound having two triphenylamine structures in the molecule represented by the general formula (3), which is suitably used for the organic EL device of the present invention, and the general formula (4),
- An arylamine compound having four triphenylamine structures in the molecule is a preferable compound as a constituent material of the hole injection layer or the hole transport layer of the organic EL device.
- the compound having an anthracene ring structure represented by the general formula (5), which is preferably used in the organic EL device of the present invention, is a preferable compound as a constituent material of the electron transport layer of the organic EL device.
- the compound having a pyrimidine ring structure represented by the general formula (6) which is preferably used in the organic EL device of the present invention, is a preferable compound as a constituent material of the electron transport layer of the organic EL device.
- the amine derivative having a condensed ring structure represented by the general formula (8) which is preferably used in the organic EL device of the present invention, can be used as a constituent material of the light emitting layer of the organic EL device. It is excellent in luminous efficiency as compared with conventional materials and is a preferred compound as a dopant material for the light emitting layer.
- the organic EL element of the present invention combines materials for organic EL elements excellent in hole injection / transport performance, thin film stability and durability in consideration of carrier balance, conventional organic EL elements Compared to the above, the hole transport efficiency from the anode to the hole transport layer is improved (and a specific (structured) arylamine compound is used for the hole transport layer), while maintaining a low driving voltage. The luminous efficiency is improved and the durability of the organic EL element can be improved. It has become possible to realize an organic EL element with a low driving voltage, high luminous efficiency, and long life.
- a specific (having a structure) arylamine compound capable of effectively expressing the role of hole injection / transport is selected as the material of the hole injection layer, and the electron acceptor is P-doped. Can efficiently inject and transport holes from the electrode to the hole transport layer, and improve the efficiency of hole injection and transport to the light-emitting layer.
- An organic EL element with high luminous efficiency can be realized.
- by selecting a material for the hole transport layer without P doping of a specific (having a structure) arylamine compound it is combined so that the carrier balance can be refined, with a low driving voltage, and high luminous efficiency.
- a long-life organic EL element can be realized. According to the present invention, it is possible to improve luminous efficiency, particularly durability, while maintaining a low driving voltage of a conventional organic EL element.
- FIG. 6 is a diagram showing organic EL element configurations of Examples 52 to 59 and Comparative Examples 1 to 8.
- the above-mentioned arylamine compound can be synthesized according to a method known per se (see, for example, Patent Document 7).
- arylamine compounds having a structure in which 2 to 6 triphenylamine structures are connected by a divalent group not containing a single bond or a hetero atom in a molecule which is preferably used in the organic EL device of the present invention
- Specific examples of preferable compounds other than the arylamine compounds represented by the general formula (3) are shown below for the arylamine compounds having two triphenylamine structures in the molecule, but the compounds are limited to these compounds. It is not something.
- the arylamine compound represented by the general formula (3) and the arylamine compound represented by the general formula (4) can be synthesized according to a method known per se (for example, Patent Literature 8-10).
- the compound having the above-described anthracene ring structure can be synthesized by a method known per se (see, for example, Patent Documents 11 to 13).
- the compound having the pyrimidine ring structure described above can be synthesized by a method known per se (for example, see Patent Document 13).
- the arylamine compound represented by the general formula (1) was purified by column chromatography, adsorption purification using silica gel, activated carbon, activated clay, etc., recrystallization using a solvent, crystallization method, sublimation purification method, and the like.
- the compound was identified by NMR analysis.
- melting point, glass transition point (Tg) and work function were measured.
- the melting point is an index of vapor deposition
- the glass transition point (Tg) is an index of stability in a thin film state
- the work function is an index of hole transportability and hole blocking property.
- the compound used in the organic EL device of the present invention is purified by column chromatography, adsorption purification using silica gel, activated carbon, activated clay, etc., purification by recrystallization or crystallization using a solvent, and finally sublimation.
- the product purified by the purification method was used.
- Tg Melting point and glass transition point (Tg) were measured with a high sensitivity differential scanning calorimeter (Bruker AXS, DSC3100SA) using powder.
- the work function was determined using an ionization potential measurement device (PYS-202, manufactured by Sumitomo Heavy Industries, Ltd.) after forming a 100 nm thin film on the ITO substrate.
- PYS-202 manufactured by Sumitomo Heavy Industries, Ltd.
- the structure of the organic EL device of the present invention includes an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode sequentially on the substrate.
- Examples thereof include those having an electron blocking layer between the light emitting layer and the light emitting layer, and those having a hole blocking layer between the light emitting layer and the electron transporting layer.
- several organic layers can be omitted or doubled, and for example, a structure can also be used that doubles as an electron injection layer and an electron transport layer.
- an electrode material having a large work function such as ITO or gold is used.
- a material obtained by P-doping an electron acceptor with respect to the arylamine compound represented by the general formula (1) is preferably used.
- Examples of hole injection / transport materials that can be mixed or used simultaneously with the arylamine compound represented by the general formula (1) include starburst type triphenylamine derivatives and various triphenylamine tetramers.
- an arylamine compound represented by the general formula (3) and an arylamine compound represented by the general formula (4) are preferably used. Further, those not doped with P are preferably used. These may be formed alone, or may be used as a single layer formed by mixing with other hole transporting materials, or the layers formed separately may be mixed to form a film. A stacked structure of layers formed by mixing with each other, or a layer formed by mixing with a single layer formed may be employed. These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- an arylamine compound represented by the general formula (1) is preferably used as the electron blocking layer of the organic EL device of the present invention.
- four triphenylamine structures, single bonds or heteroatoms are included in the molecule.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- the electron acceptor is not P-doped in a layer adjacent to the light emitting layer (for example, a hole transport layer, an electron blocking layer, etc.).
- a layer adjacent to the light emitting layer for example, a hole transport layer, an electron blocking layer, etc.
- the arylamine compound represented by the general formula (3) and the arylamine compound represented by the general formula (4) are preferably used, and the arylamine represented by the general formula (1) is used.
- An amine compound is particularly preferably used.
- the thicknesses of these layers are not particularly limited as long as they are usually used.
- the hole transport layer is 20 to 100 nm and the electron blocking layer is 5 to 30 nm.
- the light emitting layer of the organic EL device of the present invention various metal complexes, anthracene derivatives, bisstyrylbenzene derivatives, pyrene derivatives, oxazole derivatives, polyparaphenylene vinylene derivatives, etc., in addition to metal complexes of quinolinol derivatives including Alq 3 Can be used.
- the light emitting layer may be composed of a host material and a dopant material.
- an anthracene derivative is preferably used.
- a thiazole derivative, a benzimidazole derivative, a polydialkylfluorene derivative. Etc. can be used.
- a pyrene derivative and an amine derivative having a condensed ring structure represented by the general formula (8) are preferably used.
- quinacridone, coumarin, rubrene, perylene, and derivatives thereof, benzopyran derivatives, Indenophenanthrene derivatives, rhodamine derivatives, aminostyryl derivatives, and the like can be used. These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- a phosphorescent material can be used as the light emitting material.
- a phosphorescent emitter of a metal complex such as iridium or platinum can be used.
- Green phosphorescent emitters such as Ir (ppy) 3
- blue phosphorescent emitters such as FIrpic and FIr6, red phosphorescent emitters such as Btp 2 Ir (acac), and the like are used as the host material.
- carbazole derivatives such as 4,4′-di (N-carbazolyl) biphenyl (CBP), TCTA, and mCP can be used.
- p-bis (triphenylsilyl) benzene (UGH2) and 2,2 ′, 2 ′′-(1,3,5-phenylene) -tris (1-phenyl-1H-benzimidazole) ) (TPBI) or the like, and a high-performance organic EL element can be manufactured.
- the phosphorescent light-emitting material into the host material by co-evaporation in the range of 1 to 30 weight percent with respect to the entire light-emitting layer.
- Non-Patent Document 3 a material that emits delayed fluorescence such as CDCB derivatives such as PIC-TRZ, CC2TA, PXZ-TRZ, and 4CzIPN as the light emitting material (see, for example, Non-Patent Document 3).
- CDCB derivatives such as PIC-TRZ, CC2TA, PXZ-TRZ, and 4CzIPN
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- a phenanthroline derivative such as bathocuproine (BCP) or a quinolinol derivative such as aluminum (III) bis (2-methyl-8-quinolinato) -4-phenylphenolate (BAlq)
- BCP bathocuproine
- BAlq quinolinol derivative
- various rare earth complexes, triazole derivatives, triazine derivatives, oxadiazole derivatives, and other compounds having a hole blocking action can be used.
- These materials may also serve as the material for the electron transport layer.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- a compound having an anthracene ring structure represented by the general formula (5) or a compound having a pyrimidine ring structure represented by the general formula (6) is preferably used.
- other metal complexes of quinolinol derivatives such as Alq 3 and BAlq, various metal complexes, triazole derivatives, triazine derivatives, oxadiazole derivatives, thiadiazole derivatives, carbodiimide derivatives, quinoxaline derivatives, phenanthroline derivatives, silole derivatives, etc. Can be used.
- These may be formed alone, but may be used as a single layer formed by mixing with other materials, layers formed alone, mixed layers formed, or A stacked structure of layers formed by mixing with a layer formed alone may be used.
- These materials can be formed into a thin film by a known method such as a spin coating method or an ink jet method in addition to a vapor deposition method.
- an alkali metal salt such as lithium fluoride and cesium fluoride
- an alkaline earth metal salt such as magnesium fluoride
- a metal oxide such as aluminum oxide
- an electrode material having a low work function such as aluminum or an alloy having a lower work function such as a magnesium silver alloy, a magnesium indium alloy, or an aluminum magnesium alloy is used as the electrode material.
- Tetrakis (triphenylphosphine) palladium (1.1 g) was added and heated, followed by stirring at 80 ° C. for 16 hours. After cooling to room temperature, 300 ml of methanol was added, and the precipitated solid was collected by filtration, 270 ml of 1,2-dichlorobenzene was added and dissolved by heating, 16 g of silica gel was added, and the mixture was stirred for 30 minutes. After removing insoluble materials by filtration, a crude product precipitated by adding 300 ml of methanol was collected by filtration.
- Tetrakis (triphenylphosphine) palladium (0.95 g) was added and heated, followed by stirring at 70 ° C. for 12 hours. After cooling to room temperature, 200 ml of methanol was added, and the precipitated solid was collected by filtration. After adding 400 ml of 1,2-dichlorobenzene and heating to dissolve, 20 g of silica gel was added and stirred for 30 minutes. After removing insolubles by filtration, a precipitate formed by adding 500 ml of methanol was collected by filtration.
- the precipitate was dissolved by adding 100 ml of 1,2-dichlorobenzene, and the crude product precipitated by adding 100 ml of toluene and 100 ml of methanol was collected by filtration.
- the crude product was refluxed with 250 ml of methanol to give 4,4′-bis ⁇ (biphenyl-4-yl)-(phenyl-d 5 ) amino ⁇ -1,1 ′: 3 ′, 1 ′′. -18.3 g (91% yield) of white powder of terphenyl (compound 1-28) was obtained.
- Tetrakis (triphenylphosphine) palladium 0.87 g was added, heated, and refluxed for 20 hours with stirring. After cooling to room temperature, the organic layer was collected by a liquid separation operation, dehydrated using anhydrous magnesium sulfate, and concentrated to obtain a crude product.
- the arylamine compound represented by the general formula (1) has a glass transition point of 100 ° C. or higher, which indicates that the thin film state is stable.
- a deposited film having a film thickness of 100 nm was prepared on the ITO substrate, and an ionization potential measuring device (PYS-202, manufactured by Sumitomo Heavy Industries, Ltd.) was used. The work function was measured.
- the arylamine compound represented by the general formula (1) exhibits a suitable energy level as compared with a work function of 5.4 eV possessed by a general hole transport material such as NPD or TPD. It can be seen that it has a hole transport capability.
- the organic EL element has a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, an electron transport layer on a glass substrate 1 on which an ITO electrode is previously formed as a transparent anode 2. 6, an electron injection layer 7 and a cathode (aluminum electrode) 8 were deposited in this order.
- the glass substrate 1 formed with ITO having a film thickness of 150 nm was subjected to ultrasonic cleaning in isopropyl alcohol for 20 minutes, and then dried on a hot plate heated to 200 ° C. for 10 minutes. Then, after performing UV ozone treatment for 15 minutes, this glass substrate with ITO was attached in a vacuum evaporation machine, and pressure was reduced to 0.001 Pa or less. Subsequently, an electron acceptor (Acceptor-1) having the following structural formula and the compound (1-1) of Example 1 are used as the hole injection layer 3 so as to cover the transparent anode 2, and the deposition rate ratio is Acceptor-1: Compound.
- an electron acceptor (Acceptor-1) having the following structural formula and the compound (1-1) of Example 1 are used as the hole injection layer 3 so as to cover the transparent anode 2
- the deposition rate ratio is Acceptor-1: Compound.
- the compound (1-1) of Example 1 was formed as a hole transport layer 4 so as to have a film thickness of 40 nm.
- Binary vapor deposition was performed at a vapor deposition rate to form a film thickness of 20 nm.
- lithium fluoride was formed as the electron injection layer 7 so as to have a film thickness of 1 nm.
- aluminum was deposited to a thickness of 100 nm to form the cathode 8.
- the characteristic measurement was performed at normal temperature in air
- Example 52 the amine derivative (8-1) having a condensed ring structure was used instead of the compound EMD-1 having the structural formula as a material for the light-emitting layer 5, and the amine derivative (8-1) having a condensed ring structure was used.
- An organic EL element was produced under the same conditions except that the above was formed. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL element was produced under the same conditions except that the above was formed. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL device under the same conditions except that the compound HTM-1 having the above structural formula was used instead of the compound (1-1) of Example 1 as a material for the hole transport layer 4 and the film thickness was 40 nm. was made. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL device under the same conditions except that the compound HTM-1 having the above structural formula was used instead of the compound (1-1) of Example 1 as a material for the hole transport layer 4 and the film thickness was 40 nm. was made. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL device under the same conditions except that the compound HTM-1 having the above structural formula was used instead of the compound (1-1) of Example 1 as a material for the hole transport layer 4 and the film thickness was 40 nm. was made. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL element was produced under the same conditions except that binary deposition was performed at a deposition rate to form a film thickness of 40 nm. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL element was produced under the same conditions except that binary deposition was performed at a deposition rate to form a film thickness of 40 nm. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- An organic EL element was produced under the same conditions except that binary deposition was performed at a deposition rate to form a film thickness of 40 nm. About the produced organic EL element, the characteristic measurement was performed at normal temperature in air
- Table 1 summarizes the results of measuring the lifetime of the elements using the organic EL elements produced in Examples 52 to 59 and Comparative Examples 1 to 8.
- the element lifetime corresponds to 95% of the emission brightness of 1900 cd / m 2 (when the initial brightness is 100%) when the constant current drive is performed with the emission brightness (initial brightness) at the start of light emission being 2000 cd / m 2 : It was measured as the time to decay to 95% decay.
- the luminous efficiency when a current density of 10 mA / cm 2 is passed is the organic EL elements of Comparative Examples 5 to 8 doped with an electron acceptor in the hole transport layer.
- the organic EL elements 4.84 to 5.44 cd / A of Comparative Examples 1 to 4 in which the electron acceptor was not doped in the hole transport layer showed high efficiency.
- the organic EL devices of Examples 52 to 59 using the arylamine compound represented by the general formula (1) for the hole injection layer had a higher efficiency of 6.06 to 7.20 cd / A.
- the hole transport layer was doped with an electron acceptor compared to 0.45 to 0.64 lm / W of the organic EL elements of Comparative Examples 5 to 8 in which the hole transport layer was also doped with an electron acceptor. High efficiency was obtained at 4.07 to 4.45 lm / W of the organic EL elements of Comparative Examples 1 to 4 which were not used.
- the efficiency was further increased to 4.99 to 5.85 lm / W.
- the hole transport layer was not doped with an electron acceptor compared to 1 hour of the organic EL devices of Comparative Examples 5 to 8 in which the hole transport layer was also doped with an electron acceptor.
- the lifetime of the organic EL elements of Comparative Examples 1 to 4 was extended to 6 to 69 hours.
- the organic EL devices of Examples 52 to 59 using the arylamine compound represented by the general formula (1) for the hole injection layer are found to have a much longer lifetime of 116 to 143 hours.
- the organic EL device of the present invention efficiently selects holes from the electrode to the hole transport layer by selecting a specific (having a structure) arylamine compound as the material of the hole injection layer and P-doping the electron acceptor.
- the carrier balance inside the organic EL element can be improved by selecting a material for the hole transport layer without P-doping a specific (having a structure) arylamine compound, thereby improving the carrier balance inside the organic EL element. It was found that an organic EL element with higher luminous efficiency and longer life can be realized as compared with the element.
- the organic EL device of the present invention which combines a specific (having a structure) arylamine compound and an electron acceptor so that the carrier balance inside the organic EL device can be refined, has improved luminous efficiency and durability of the organic EL device. For example, it has become possible to expand to home appliances and lighting applications.
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Abstract
Description
そして、熱活性化遅延蛍光(TADF)による発光を利用する素子も開発されている。2011年に九州大学の安達らは、熱活性化遅延蛍光材料を用いた素子によって5.3%の外部量子効率を実現させた(例えば、非特許文献3参照)。
また、これらの基は電子受容体基以外にも置換基を有していてもよく、置換基としては、具体的に、重水素原子;フェニル基、ビフェニリル基、ターフェニリル基、ナフチル基、アントラセニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基、トリフェニレニル基などの芳香族炭化水素基もしくは縮合多環芳香族基;ピリジル基、ピリミジニル基、トリアジニル基、チエニル基、フリル基、ピロリル基、キノリル基、イソキノリル基、ベンゾフラニル基、ベンゾチエニル基、インドリル基、カルバゾリル基、ベンゾオキサゾリル基、ベンゾチアゾリル基、キノキサリニル基、ベンゾイミダゾリル基、ピラゾリル基、ジベンゾフラニル基、ジベンゾチエニル基、カルボリニル基などの芳香族複素環基をあげることができ、これらの置換基は、さらに前記例示した置換基、もしくは電子受容体基が置換していてもよい。そして、これらの置換基同士が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成していてもよい。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(3)中のR1~R6で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの2価基は置換基を有していてもよく、「炭素原子数1ないし6の直鎖状もしくは分岐状のアルキレン基」、「炭素原子数5ないし10のシクロアルキレン基」または「炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニレン基」の置換基として、前記一般式(3)中のR1~R6で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、「芳香族炭化水素の2価基」または「縮合多環芳香族の2価基」の置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
そして、一般式(5)中のA1で表される「置換もしくは無置換の芳香族炭化水素の2価基」、「置換もしくは無置換の芳香族複素環の2価基」または「置換もしくは無置換の縮合多環芳香族の2価基」は、上記「芳香族炭化水素」、「芳香族複素環」または「縮合多環芳香族」から水素原子を2個取り除いてできる2価基を表す。
また、これらの2価基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、複数個存在するDは、互いに同一でも異なってもよく、これらの基同士が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの置換基同士が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成していてもよく、これらの置換基と当該置換基が結合しているAr8、Ar9もしくはAr10が酸素原子または硫黄原子を介して互いに結合して環を形成していてもよい。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(6)中のAr8、Ar9、Ar10で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(6)中のAr8、Ar9、Ar10で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
そして、一般式(8)中のA2で表される「置換もしくは無置換の芳香族炭化水素の2価基」、「置換もしくは無置換の芳香族複素環の2価基」または「置換もしくは無置換の縮合多環芳香族の2価基」は、上記「芳香族炭化水素」、「芳香族複素環」または「縮合多環芳香族」から水素原子を2個取り除いてできる2価基を表す。
また、これらの2価基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(8)中のR23~R29で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(8)中のR23~R29で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(8)中のR23~R29で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
一般式(8)中のR23~R26で表される「芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基」は、これらの基(R23~R26)同士が、これらの基(R23~R26)が有する「芳香族炭化水素基」、「芳香族複素環基」または「縮合多環芳香族基」を介しつつ、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、これらの基(R23~R26)とこれらの基(R23~R26)が直接結合しているベンゼン環とで、これらの基(R23~R26)が有する「芳香族炭化水素基」、「芳香族複素環基」または「縮合多環芳香族基」を介しつつ、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、一置換アミノ基などの連結基を介して互いに結合して環を形成してもよい。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(8)中のR23~R29で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(8)中のR23~R29で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(8)中のR23~R29で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」の置換基として、前記一般式(8)中のR23~R29で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」または「置換基を有する炭素原子数5ないし10のシクロアルキル基」における「置換基」に関して示したものと同様のものをあげることができ、「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」の置換基として、前記一般式(8)中のR23~R29で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
一般式(1)において、Ar1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」としては、重水素原子、「置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」、「置換もしくは無置換の芳香族炭化水素基」または「置換もしくは無置換の縮合多環芳香族基」が好ましく、重水素原子、フェニル基、ビフェニリル基、ナフチル基、ビニル基がより好ましい。また、これらの基同士が単結合を介して互いに結合して縮合芳香環を形成する場合も好ましい。
一般式(2)中のAr5~Ar7は、少なくとも部分的に、好ましくは完全に「電子受容体基」で置換されている態様が好ましい。
一般式(2)中のAr5~Ar7としては、テトラフルオロピリジル基、テトラフルオロ-(トリフルオロメチル)フェニル基、シアノ-テトラフルオロフェニル基、ジクロロ-ジフルオロ-(トリフルオロメチル)フェニル基、ペンタフルオロフェニル基、などのフッ素原子、塩素原子、シアノ基、またはトリフルオロメチル基で完全に置換されたフェニル基もしくはピリジル基が好ましい。
一般式(3)中のr1~r6としては、0~3の整数であることが好ましく、0~2の整数であることがより好ましい。
一般式(3)中のL1で表される「2価の連結基」としては、メチレン基、「炭素原子数5ないし10のシクロアルキレン基」、「芳香族炭化水素の2価基」、「縮合多環芳香族の2価基」、もしくは単結合が好ましく、下記構造式(B)~(G)で示される2価基、もしくは単結合がより好ましく、下記構造式(B)で示される2価基が特に好ましい。
一般式(4)中のr7~r18としては、0~3の整数であることが好ましく、0~2の整数であることがより好ましい。
一般式(4)中のL2~L4で表される「2価の連結基」としては、メチレン基、「炭素原子数5ないし10のシクロアルキレン基」、「芳香族炭化水素の2価基」、「縮合多環芳香族の2価基」、もしくは単結合が好ましく、前記構造式(B)~(G)で示される2価基、もしくは単結合がより好ましい。
一般式(5)中のp、qは、pとqの和(p+q)が9となる関係を維持するものとし、pは7または8を表し、qは1または2を表す。
一般式(5)中のA1としては、「置換もしくは無置換の芳香族炭化水素の2価基」または「置換もしくは無置換の縮合多環芳香族の2価基」が好ましく、ベンゼン、ビフェニル、ナフタレン、またはフェナントレンから水素原子を2個取り除いてできる2価基がより好ましい。
一般式(5)で表されるアントラセン環構造を有する化合物としては、下記一般式(5a)、一般式(5b)または一般式(5c)で表されるアントラセン環構造を有する化合物がより好ましく用いられる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(5a)中のR32~R38で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
一般式(5a)において、X3が窒素原子(X1、X2、X4が炭素原子)であることが好ましく、この場合、R34の水素原子もしくは置換基は存在しない。
また、連結基L1の結合位置は、ピリドインドール環の窒素原子のパラ位に相当する位置に結合するのが好ましい。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(5a)中のR32~R38で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(5a)中のR32~R38で表される「置換基を有する炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基」、「置換基を有する炭素原子数5ないし10のシクロアルキル基」または「置換基を有する炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
また、これらの基は置換基を有していてもよく、置換基として、前記一般式(1)中のAr1~Ar4で表される「置換芳香族炭化水素基」、「置換芳香族複素環基」または「置換縮合多環芳香族基」における「置換基」に関して示したものと同様のものをあげることができ、とりうる態様も、同様のものをあげることができる。
一般式(6)中のAr9としては、置換基を有するフェニル基、置換もしくは無置換のスピロビフルオレニル基、もしくはフリル基、ベンゾフラニル基、ジベンゾフラニル基のような含酸素芳香族複素環基、またはチエニル基、ベンゾチエニル基、ジベンゾチエニル基のような含硫黄芳香族複素環基が好ましく、この場合のフェニル基の置換基としては、フェニル基、ビフェニリル基、ターフェニル基などの芳香族炭化水素基、ナフチル基、アセナフテニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基、トリフェニレニル基、スピロビフルオレニル基などの縮合多環芳香族基、もしくはフリル基、ベンゾフラニル基、ジベンゾフラニル基のような含酸素芳香族複素環基、またはチエニル基、ベンゾチエニル基、ジベンゾチエニル基のような含硫黄芳香族複素環基が好ましく、フェニル基、ナフチル基、フェナントレニル基、フルオレニル基、ピレニル基、フルオランテニル基、トリフェニレニル基、スピロビフルオレニル基、ジベンゾフラニル基、ジベンゾチエニル基がより好ましく、フェニル基が有する置換基とフェニル基とが酸素原子または硫黄原子を介して互いに結合して環を形成することも好ましい。
一般式(6)中のAr10としては、水素原子、置換基を有するフェニル基、置換もしくは無置換のスピロビフルオレニル基、もしくはフリル基、ベンゾフラニル基、ジベンゾフラニル基のような含酸素芳香族複素環基、またはチエニル基、ベンゾチエニル基、ジベンゾチエニル基のような含硫黄芳香族複素環基が好ましく、この場合のフェニル基の置換基としては、フェニル基、ビフェニリル基、ターフェニル基などの芳香族炭化水素基、ナフチル基、アセナフテニル基、フェナントレニル基、フルオレニル基、インデニル基、ピレニル基、ペリレニル基、フルオランテニル基、トリフェニレニル基、スピロビフルオレニル基などの縮合多環芳香族基、もしくはフリル基、ベンゾフラニル基、ジベンゾフラニル基のような含酸素芳香族複素環基、またはチエニル基、ベンゾチエニル基、ジベンゾチエニル基のような含硫黄芳香族複素環基が好ましく、フェニル基、ナフチル基、フェナントレニル基、フルオレニル基、ピレニル基、フルオランテニル基、トリフェニレニル基、スピロビフルオレニル基、ジベンゾフラニル基、ジベンゾチエニル基がより好ましく、フェニル基が有する置換基とフェニル基とが酸素原子または硫黄原子を介して互いに結合して環を形成することも好ましい。
一般式(6)において、Ar9とAr10は同一の基であってもよいが、分子全体の対称性がよくなることによって結晶化し易くなる恐れがあり、薄膜の安定性の観点から、Ar9とAr10は異なる基であることが好ましく、Ar9とAr10が同時に水素原子とはなることはないものとする。
また、Ar9とAr10の一方が水素原子であることが好ましい。
構造式(7)において、ベンゼン環におけるAr11の結合位置は、下記構造式(7a)に示されるように、一般式(6)に示されるピリミジン環との結合位置に対し、メタ位であることが、薄膜の安定性の観点から好ましい。
一般式(8)中のAr12、Ar13としては、フェニル基、ビフェニリル基、ナフチル基、フルオレニル基、インデニル基、ピリジル基、ジベンゾフラニル基、ピリドベンゾフラニル基が好ましい。
一般式(8)中のAr12とAr13は直接、もしくはそれらの基が有する置換基を介しつつ、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。
一般式(8)中のR23~R26において、少なくともひとつが、「芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基」であることが好ましく、この場合の「芳香族炭化水素基」、「芳香族複素環基」、「縮合多環芳香族基」としては、フェニル基、ビフェニリル基、ナフチル基、フルオレニル基、インデニル基、ピリジル基、ジベンゾフラニル基、ピリドベンゾフラニル基が好ましい。
一般式(8)において、R23~R26のいずれかひとつが「芳香族炭化水素基」であって、R23~R26が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成する態様が好ましい。この場合の「芳香族炭化水素基」がフェニル基であって、R23~R26が結合しているベンゼン環と、酸素原子もしくは硫黄原子を介して互いに結合して環を形成する態様、すなわち、R23~R26が結合しているベンゼン環とともにジベンゾフラン環、もしくはジベンゾチオフェン環を形成する態様が特に好ましい。
一般式(8)において、R27~R29のいずれかひとつが「芳香族炭化水素基」であって、R27~R29が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成する態様が好ましい。この場合の「芳香族炭化水素基」がフェニル基であって、R27~R29が結合しているベンゼン環と、酸素原子もしくは硫黄原子を介して互いに結合して環を形成する態様、すなわちジベンゾフラン環、もしくはジベンゾチオフェン環を形成する態様が特に好ましい。
以上のように、一般式(8)で表される縮合環構造を有するアミン誘導体の中で、R23~R29がこれらの基同士で互いに結合して環を形成する態様、または、R23~R29とR23~R29が結合しているベンゼン環とが互いに結合して環を形成する態様として、下記一般式(8a-a)、(8a-b)、(8b-a)、(8b-b)、(8b-c)、(8b-d)、(8c-a)もしくは(8c-b)で表される態様が好ましく用いられる。
そして、R30とR31が、単結合、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、一置換アミノ基などの連結基を介して互いに結合して環を形成する態様が好ましく、単結合を介して互いに結合して環を形成する態様が特に好ましい。
以上のように、一般式(8)で表される縮合環構造を有するアミン誘導体の中で、R30とR31が互いに結合して環を形成する態様として、下記一般式(8a-a1)、(8a-b1)、(8b-a1)、(8b-b1)、(8b-c1)、(8b-d1)、(8c-a1)もしくは(8c-b1)で表される態様が好ましく用いられる。
低駆動電圧、高発光効率、かつ長寿命の有機EL素子を実現することが可能となった。
さらに、特定の(構造を有する)アリールアミン化合物をPドーピングしないで、正孔輸送層の材料に選択することによって、キャリアバランスを精緻化できるように組み合わせ、低駆動電圧であって、高発光効率、かつ長寿命の有機EL素子を実現することができる。
本発明によれば、従来の有機EL素子の低駆動電圧を維持しつつ、発光効率、特に耐久性を改良することができる。
その他、本発明の有機EL素子に用いられる化合物は、カラムクロマトグラフによる精製、シリカゲル、活性炭、活性白土などによる吸着精製、溶媒による再結晶や晶析法などによって精製を行った後、最後に昇華精製法によって精製したものを用いた。
前記一般式(1)で表されるアリールアミン化合物と混合もしくは同時に使用できる、正孔注入・輸送性の材料としては、スターバースト型のトリフェニルアミン誘導体、種々のトリフェニルアミン4量体などの材料;銅フタロシアニンに代表されるポルフィリン化合物;ヘキサシアノアザトリフェニレンのようなアクセプター性の複素環化合物や塗布型の高分子材料、などを用いることができる。これらの材料は蒸着法の他、スピンコート法やインクジェット法などの公知の方法によって薄膜形成を行うことができる。
また、Pドーピングしないものが好適に用いられる。
これらは、単独で成膜してもよいが、他の正孔輸送性の材料とともに混合して成膜した単層として使用してもよく、単独で成膜した層同士、混合して成膜した層同士、または単独で成膜した層と混合して成膜した層の積層構造としてもよい。これらの材料は蒸着法の他、スピンコート法やインクジェット法などの公知の方法によって薄膜形成を行うことができる。
これらの層には、前記一般式(3)で表されるアリールアミン化合物、前記一般式(4)で表されるアリールアミン化合物が好適に用いられ、前記一般式(1)で表されるアリールアミン化合物が特に好ましく用いられる。
また、これらの層の膜厚は、通常用いられる膜厚であれば特に限定するものではないが、例えば、正孔輸送層としては20~100nm、電子阻止層としては5~30nmで用いられる。
反応容器に、(ビフェニル-4-イル)-フェニルアミン39.5g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル32.4g、銅粉0.42g、炭酸カリウム27.8g、3,5-ジ-tert-ブチルサリチル酸1.69g、亜硫酸水素ナトリウム2.09g、ドデシルベンゼン32ml、トルエン50mlを加え、トルエンを留去しながら210℃まで加熱した。30時間撹拌した後冷却し、トルエン50ml、メタノール100mlを加えた。析出する固体をろ過によって採取し、メタノール/水(5/1、v/v)の混合溶液500mlで洗浄した後、1,2-ジクロロベンゼン350mlを加えて加熱し、不溶物をろ過によって除去した。放冷した後、メタノール400mlを加え、析出する粗製物をろ過によって採取し、メタノール500mlを用いた還流洗浄を行うことによって、4,4’’-ビス{(ビフェニル-4-イル)-フェニルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-1)の灰色粉体45.8g(収率91%)を得た。
1H-NMR(CDCl3)で以下の40個の水素のシグナルを検出した。
δ(ppm)=7.68-7.63(4H)、7.62-7.48(12H)、7.45(4H)、7.38-7.10(20H)。
反応容器に、(ビフェニル-4-イル)-4-トリルアミン16.7g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル12.9g、銅粉0.17g、炭酸カリウム11.2g、3,5-ジ-tert-ブチルサリチル酸0.71g、亜硫酸水素ナトリウム0.89g、ドデシルベンゼン20ml、トルエン20mlを加え、トルエンを留去しながら210℃まで加熱し、28時間撹拌した。冷却した後、トルエン150mlを加え、不溶物をろ過によって除いた。メタノール100mlを加え、析出する粗製物をろ過によって採取し、トルエン/メタノールの混合溶媒で再結晶を3回繰り返すことによって、4,4’’-ビス{(ビフェニル-4-イル)-4-トリルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-10)の黄白色粉体12.3g(収率61%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.68-7.62(4H)、7.61-7.41(16H)、7.38-7.08(18H)、2.38(6H)。
反応容器に、(ビフェニル-4-イル)-(フェニル-d5)アミン25.3g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル20.3g、銅粉0.30g、炭酸カリウム17.5g、3,5-ジ-tert-ブチルサリチル酸1.05g、亜硫酸水素ナトリウム1.31g、ドデシルベンゼン20ml、トルエン30mlを加え、トルエンを留去しながら210℃まで加熱した。23時間撹拌した後冷却し、トルエン30ml、メタノール60mlを加えた。析出する固体をろ過によって採取し、メタノール/水(1/5、v/v)の混合溶液180mlで洗浄した後、メタノール90mlで洗浄した。得られた灰色粉体を1,2-ジクロロベンゼン210mlを加えて加熱し、不溶物をろ過によって除去した。放冷した後、メタノール210mlを加え、析出する粗製物をろ過によって採取し、メタノール210mlを用いた還流洗浄を行うことによって、4,4’’-ビス{(ビフェニル-4-イル)-(フェニル-d5)アミノ}-1,1’;4’,1’’-ターフェニル(化合物1-14)の灰色粉体29.3g(収率96%)を得た。
1H-NMR(THF-d8)で以下の30個の水素のシグナルを検出した。
δ(ppm)=7.69(4H)、7.65-7.52(12H)、7.39(4H)、7.28(2H)、7.20-7.14(8H)。
反応容器に、(ナフタレン-1-イル)-フェニルアミン40.0g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル43.7g、銅粉0.53g、炭酸カリウム34.4g、3,5-ジ-tert-ブチルサリチル酸2.08g、亜硫酸水素ナトリウム2.60g、ドデシルベンゼン40ml、キシレン40mlを加え、キシレンを留去しながら210℃まで加熱した。35時間撹拌した後冷却し、トルエン100mlを加え、析出する固体をろ過によって採取した。得られた固体に1,2-ジクロロベンゼン210mlを加えて加熱溶解し、シリカゲル30gを加えた後、不溶物をろ過によって除去した。放冷した後、析出する粗製物をろ過によって採取し、メタノールを用いた還流洗浄を行うことによって、4,4’’-ビス{(ナフタレン-1-イル)-フェニルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-2)の淡黄色粉体21.9g(収率40%)を得た。
1H-NMR(THF-d8)で以下の36個の水素のシグナルを検出した。
δ(ppm)=7.98-7.88(4H)、7.80(2H)、7.60(4H)、7.52-7.40(8H)、7.36(4H)、7.18(4H)、7.08-7.01(8H)、6.93(2H)。
反応容器に、(ナフタレン-2-イル)-フェニルアミン50.0g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル50.0g、tert-ブトキシナトリウム23.9g、キシレン500mlを加え、超音波を照射しながら1時間窒素ガスを通気した。酢酸パラジウム0.47g、トリ-tert-ブチルホスフィンの50%(w/v)トルエン溶液2.96mlを加え、120℃まで加熱し、15時間撹拌した。放冷した後、減圧下で濃縮し、メタノール300mlを加えた。析出する固体をろ過によって採取し、1,2-ジクロロベンゼン300mlを加えて加熱溶解し、シリカゲル140gを加えた後、不溶物をろ過によって除去した。減圧下で濃縮し、1,2-ジクロロベンゼン250mlを用いた再結晶による精製を行った後、メタノールを用いた還流洗浄を行うことによって、4,4’’-ビス{(ナフタレン-2-イル)-フェニルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-6)の白色粉体51.0g(収率74%)を得た。
1H-NMR(THF-d8)で以下の36個の水素のシグナルを検出した。
δ(ppm)=7.77(4H)、7.70(4H)、7.64-7.58(6H)、7.48(2H)、7.40-7.21(10H)、7.21-7.12(8H)、7.04(2H)。
反応容器に、{(ビフェニル-2’,3’,4’,5’,6’-d5)-4-イル}-フェニルアミン24.8g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル19.9g、銅粉0.26g、炭酸カリウム17.2g、3,5-ジ-tert-ブチルサリチル酸2.06g、亜硫酸水素ナトリウム1.30g、ドデシルベンゼン20mlを加え、215℃まで加熱した。21時間撹拌した後冷却し、トルエン30ml、メタノール60mlを加えた。析出する固体をろ過によって採取し、メタノール/水(1/5、v/v)の混合溶液で洗浄した。得られた固体に1,2-ジクロロベンゼン300mlを加えて加熱し、不溶物をろ過によって除去した。放冷した後、メタノール300mlを加え、析出物をろ過によって採取することによって、4,4’’-ビス[{(ビフェニル-2’,3’,4’,5’,6’-d5)-4-イル}-フェニルアミノ]-1,1’;4’,1’’-ターフェニル(化合物1-21)の黄色粉体25.5g(収率85%)を得た。
1H-NMR(THF-d8)で以下の30個の水素のシグナルを検出した。
δ(ppm)=7.69(4H)、7.65-7.52(8H)、7.28(4H)、7.20-7.12(10H)、7.03(4H)。
反応容器に、(ビフェニル-3-イル)-(ビフェニル-4-イル)アミン16.1g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル11.0g、銅粉0.29g、炭酸カリウム9.46g、3,5-ジ-tert-ブチルサリチル酸1.14g、亜硫酸水素ナトリウム0.71g、ドデシルベンゼン22mlを加え、220℃まで加熱した。34時間撹拌した後冷却し、トルエン、ヘプタンを加えた。析出する固体をろ過によって採取し、1,2-ジクロロベンゼン200mlを加えて加熱溶解し、シリカゲル50gを加えた後、不溶物をろ過によって除去した。減圧下濃縮した後、トルエン、アセトンを加えた。析出する固体をろ過によって採取し、1,2-ジクロロメタンを用いた晶析、続いて、アセトンを用いた晶析、さらに、1,2-ジクロロメタンを用いた晶析、メタノールを用いた晶析を行うことによって、4,4’’-ビス{(ビフェニル-3-イル)-(ビフェニル-4-イル)アミノ}-1,1’;4’,1’’-ターフェニル(化合物1-22)の淡黄色粉体25.5g(収率77%)を得た。
1H-NMR(THF-d8)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.71(4H)、7.67-7.50(16H)、7.47(4H)、7.43-7.20(20H)、7.12(4H)。
反応容器に、(フェナントレン-9-イル)-フェニルアミン16.9g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル12.6g、銅粉0.16g、炭酸カリウム10.9g、3,5-ジ-tert-ブチルサリチル酸0.65g、亜硫酸水素ナトリウム0.83g、ドデシルベンゼン13mlを加え、210℃まで加熱した。23時間撹拌した後冷却し、トルエン26ml、メタノール26mlを加えた。析出する固体をろ過によって採取し、メタノール/水(1/5、v/v)の混合溶液120mlで洗浄した。1,2-ジクロロベンゼンを用いた晶析、続いて、メタノールを用いた晶析を行うことによって、4,4’’-ビス{(フェナントレン-9-イル)-フェニルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-3)の白色粉体9.38g(収率47%)を得た。
1H-NMR(THF-d8)で以下の40個の水素のシグナルを検出した。
δ(ppm)=8.88-8.73(4H)、8.09(2H)、7.71(2H)、7.68-7.41(18H)、7.21-7.10(12H)、6.92(2H)。
反応容器に、(ビフェニル-3-イル)-フェニルアミン12.7g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル11.3g、銅粉0.30g、炭酸カリウム9.72g、3,5-ジ-tert-ブチルサリチル酸1.17g、亜硫酸水素ナトリウム0.73g、ドデシルベンゼン23mlを加え、220℃まで加熱した。21時間撹拌した後冷却し、1,2-ジクロロベンゼン250ml、シリカ30gを加えた後、不溶物をろ過によって除去した。減圧下濃縮した後、ヘプタンを加え、析出する固体をろ過によって採取し、1,2-ジクロロベンゼン/ヘプタンの混合溶媒を用いた晶析、1,2-ジクロロベンゼン/メタノールの混合溶媒を用いた晶析を行うことによって、4,4’’-ビス{(ビフェニル-3-イル)-フェニルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-5)の薄褐色粉体10.8g(収率64%)を得た。
1H-NMR(THF-d8)で以下の40個の水素のシグナルを検出した。
δ(ppm)=7.69(4H)、7.60(4H)、7.52(4H)、7.42-7.21(16H)、7.20-7.13(8H)、7.10-7.00(4H)。
反応容器に、(トリフェニレン-2-イル)-フェニルアミン11.9g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル8.55g、tert-ブトキシナトリウム4.09g、キシレン86mlを加え、超音波を照射しながら40分間窒素ガスを通気した。酢酸パラジウム0.08g、トリ-tert-ブチルホスフィンの50%(w/v)トルエン溶液0.55mlを加え、100℃まで加熱した。7時間撹拌した後冷却し、メタノール80mlを加え析出する固体をろ過によって採取した。得られた固体に1,2-ジクロロベンゼン300mlを加えて加熱し、シリカゲル45gを加えた後、不溶物をろ過によって除去した。減圧下濃縮した後、1,2-ジクロロベンゼンを用いた再結晶による精製を行った後、メタノールを用いた還流洗浄を行うことによって、4,4’’-ビス{(トリフェニレン-2-イル)-フェニルアミノ}-1,1’;4’,1’’-ターフェニル(化合物1-23)の薄黄緑色粉体11.4g(収率74%)を得た。
1H-NMR(THF-d8)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.72-8.62(8H)、8.45(2H)、8.36(2H)、7.75(4H)、7.70-7.21(26H)、7.09(2H)。
反応容器に、ジ(ナフタレン-2-イル)アミン12.2g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル9.49g、銅粉0.14g、炭酸カリウム8.2g、3,5-ジ-t-ブチルサリチル酸0.51g、亜硫酸水素ナトリウム0.69g、ドデシルベンゼン15ml、トルエン20mlを加え、トルエンを留去しながら210℃まで加熱した。28時間撹拌した後冷却し、1,2-ジクロロベンゼン20ml、メタノール20mlを加えた。析出する固体をろ過によって採取し、メタノール/水(1/4、v/v)の混合溶液200mlで洗浄した後、1,2-ジクロロベンゼン100mlを加えて加熱溶解し、シリカゲルを加えた後、不溶物をろ過によって除去した。放冷した後、メタノール250mlを加え、析出する固体をろ過によって採取した。1,2-ジクロロベンゼン/メタノールの混合溶媒を用いた晶析、続いて、メタノールを用いた還流洗浄を行うことによって、4,4’’-ビス{ジ(ナフタレン-2-イル)アミノ}-1,1’;4’,1’’-ターフェニル(化合物1-24)の黄白色粉体10.5g(収率70%)を得た。
1H-NMR(THF-d8)で以下の40個の水素のシグナルを検出した。
δ(ppm)=7.82-7.75(6H),7.72(4H)7.68-7.60(8H)、7.56(4H)、7.40-7.30(14H)、7.24(4H)。
反応容器に、{4-(ナフタレン-2-イル)フェニル}-フェニルアミン16.6g、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル11.8g、銅粉0.18g、炭酸カリウム10.5g、3,5-ジ-tert-ブチルサリチル酸0.61g、亜硫酸水素ナトリウム0.83g、ドデシルベンゼン15ml、トルエン20mlを加え、トルエンを留去しながら210℃まで加熱した。19時間撹拌した後冷却し、トルエン20ml、メタノール20mlを加えた。析出する固体をろ過によって採取し、メタノール/水(1/4、v/v)の混合溶液180mlで洗浄した後、さらにメタノール100mlで洗浄した。得られた茶黄色粉体に、1,2-ジクロロベンゼン175mlを加えて加熱し、不溶物をろ過によって除去した。放冷した後、メタノール200mlを加え、析出する固体をろ過によって採取し、1,2-ジクロロベンゼン/メタノールの混合溶媒による晶析、続いて、メタノールを用いた還流洗浄を行うことによって、4,4’’-ビス[{4-(ナフタレン-2-イル)フェニル}-フェニルアミノ]-1,1’;4’,1’’-ターフェニル(化合物1-25)の茶白色粉体11.9g(収率53%)を得た。
1H-NMR(THF-d8)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.10(2H)、7.93-7.78(8H)、7.76-7.70(8H)、7.62(4H)、7.44(4H)、7.30(4H)、7.25-7.16(12H)、7.05(2H)。
反応容器に、(4’-ブロモ-1,1’-ビフェニル-4-イル)-{4-(1-フェニル-インドール-4-イル)フェニル}-フェニルアミン7.25g、{4-(4,4,5,5-テトラメチル-1,3,2-ジオキサボロラン-2-イル)フェニル}-(1,1’-ビフェニル-4-イル)-フェニルアミン5.76g、2M炭酸カリウム水溶液12.3ml、トルエン80ml、エタノール20mlを加え、超音波を照射しながら40分間窒素ガスを通気した。テトラキストリフェニルホスフィンパラジウム0.43gを加えて加熱し、攪拌しながら7時間還流した。放冷後、水50ml、トルエン100mlを加え、不溶物をろ過によって除いた。分液操作によって有機層を採取し、無水硫酸マグネシウムで脱水した後、減圧下で濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(担体:シリカゲル、溶離液:トルエン/ヘプタン)によって精製した後、THFを用いた晶析、続いて、メタノールを用いた晶析を行うことによって、4-{(ビフェニル-4-イル)-フェニルアミノ}-4’’-[{4-(1-フェニル-インドール-4-イル)フェニル}-フェニルアミノ]-1,1’;4’,1’’-ターフェニル(化合物1-26)の薄黄色粉体6.80g(収率67%)を取得した。
1H-NMR(THF-d8)で以下の45個の水素のシグナルを検出した。
δ(ppm)=7.70(4H)、7.68-7.50(16H)、7.42-7.11(23H)、7.05(1H)、6.88(1H)。
窒素置換した反応容器に、3-ブロモヨードベンゼン8.83g、(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミン30.5g、炭酸カリウム13.0g、水30ml、トルエン300ml、エタノール75mlを加え、30分間超音波を照射しながら窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム1.1gを加えて加熱し、80℃で16時間撹拌した。室温まで冷却し、メタノール300mlを加え、析出する固体をろ過によって採取し、1,2-ジクロロベンゼン270mlを加えて加熱溶解した後、シリカゲル16gを加えて30分撹拌した。ろ過によって不溶物を除去した後、メタノール300mlを加えることによって析出する粗製物をろ過によって採取した。粗製物にメタノール200mlを用いた還流洗浄を行うことによって、4,4’-ビス{(ビフェニル-4-イル)-フェニルアミノ}-1,1’:3’,1’’-ターフェニル(化合物1-27)の白色粉体14.3g(収率71%)を得た。
1H-NMR(CDCl3)で以下の40個の水素のシグナルを検出した。
δ(ppm)=7.87(1H)、7.64-7.50(12H)、7.48-7.32(6H)、7.31-6.98(21H)。
窒素置換した反応容器に、1,3-ジブロモベンゼン6.51g、(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミン26.9g、炭酸カリウム11.4g、水50ml、トルエン200ml、エタノール50mlを加え、30分間超音波を照射しながら窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.95gを加えて加熱し、70℃で12時間撹拌した。室温まで冷却し、メタノール200mlを加え、析出する固体をろ過によって採取し、1,2-ジクロロベンゼン400mlを加えて加熱溶解した後、シリカゲル20gを加えて30分撹拌した。ろ過によって不溶物を除去した後、メタノール500mlを加えることによって生成する析出物をろ過によって採取した。析出物に1,2-ジクロロベンゼン100mlを加えて溶解し、トルエン100ml、メタノール100mlを加えることによって析出する粗製物をろ過によって採取した。粗製物にメタノール250mlを用いた還流洗浄を行うことによって、4,4’-ビス{(ビフェニル-4-イル)-(フェニル-d5)アミノ}-1,1’:3’,1’’-ターフェニル(化合物1-28)の白色粉体18.3g(収率91%)を得た。
1H-NMR(CDCl3)で以下の30個の水素のシグナルを検出した。
δ(ppm)=7.87(1H)、7.64-7.32(18H)、7.31-6.98(11H)。
実施例15において(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミンに代えて(ナフタレン-1-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{(ナフタレン-1-イル)-フェニルアミノ}-1,1’:3’,1’’-ターフェニル(化合物1-29)の白色粉体8.8g(収率59%)を得た。
1H-NMR(CDCl3)で以下の36個の水素のシグナルを検出した。
δ(ppm)=7.99(2H)、7.92(2H)、7.81(2H)、7.72(1H)、7.57-6.92(29H)。
実施例15において(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミンに代えて{4-(ジベンゾフラン-4-イル)フェニル}-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス[{4-(ジベンゾフラン-4-イル)フェニル}-フェニルアミノ]-1,1’:3’,1’’-ターフェニル(化合物1-32)の白色粉体6.8g(収率86%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.01(2H)、7.97-7.82(8H)、7.67-7.24(34H)。
窒素置換した反応容器に、4-ブロモ-4’-{(ビフェニル-4-イル)-フェニルアミノ}-ビフェニル16.8g、(ビフェニル-4-イル)-{2-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミン19.0g、炭酸カリウム7.4g、水26ml、トルエン200ml、エタノール50mlを加え、30分間超音波を照射しながら窒素ガスを通気した。テトラキス(トリフェニルホスフィン)パラジウム0.87gを加えて加熱し、攪拌しながら20時間還流した。室温まで冷却し、分液操作によって有機層を採取し、無水硫酸マグネシウムを用いて脱水した後、濃縮することによって粗製物を得た。粗製物をカラムクロマトグラフ(担体:シリカゲル、溶離液:ヘプタン/トルエン)によって精製した後、酢酸エチル/メタノールの混合溶媒を用いた晶析を行うことによって、2,4’’-ビス{(ビフェニル-4-イル)-フェニルアミノ}-1,1’:4’,1’’-ターフェニル(化合物1-50)の白色粉体20.8g(収率82%)を得た。
1H-NMR(CDCl3)で以下の40個の水素のシグナルを検出した。
δ(ppm)=7.61(2H)、7.56-6.83(38H)。
窒素置換した反応容器に、4,4’’-ジブロモ-1,1’:3’,1’’-ターフェニル8.2g、(トリフェニレン-2-イル)-フェニルアミン15.4g、tert-ブトキシナトリウム5.1g、トルエン180mlを加え、30分間超音波を照射しながら窒素ガスを通気した。酢酸パラジウム0.11g、50%(w/v)のトリ-tert-ブチルホスフィンのトルエン溶液0.31mlを加えて加熱し、攪拌しながら5時間還流した。
室温まで冷却し、1,2-ジクロロベンゼンを用いた抽出操作を行った後、シリカゲルを用いたよる吸着精製、続いて、1,2-ジクロロベンゼン/メタノールの混合溶媒を用いた晶析を行うことによって、4,4’’-ビス{(トリフェニレン-2-イル)-フェニルアミノ}-1,1’:3’,1’’-ターフェニル(化合物1-51)の黄白色粉体11.67g(収率64%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.67(4H)、8.57(4H)、8.41(2H)、8.36(2H)7.88(1H)、7.70-7.10(31H)。
実施例19において(トリフェニレン-2-イル)-フェニルアミンに代えて(フェナントレン-9-イル)-フェニルアミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{(フェナントレン-9-イル)-フェニルアミノ}-1,1’:3’,1’’-ターフェニル(化合物1-52)の黄白色粉体8.0g(収率50%)を得た。
1H-NMR(CDCl3)で以下の40個の水素のシグナルを検出した。
δ(ppm)=8.81-8.71(4H)、8.10(2H)、7.83-7.39(20H)、7.29-6.97(14H)。
窒素置換した反応容器に、2-{(ビフェニル-4-イル)-フェニルアミノ}-4’’-ブロモ-1,1’:4’,1’’-ターフェニル12.1g、ビス(ビフェニル-4-イル)アミン8.0g、トリスジベンジリデンアセトンパラジウム0.6g、トリ-tert-ブチルホスフィン0.22g、tert-ブトキシナトリウム6.3gを加えて加熱し、攪拌しながら3時間還流した。室温まで冷却し、メタノール600mlを加え、析出する粗製物をろ過によって採取した。粗製物をトルエンに溶解し、ろ過によって不溶物を除いた後、メタノールを用いた晶析精製を行った。続いて、THF/メタノールの混合溶媒を用いた再結晶を行うことによって、4-{ビス(ビフェニル-4-イル)アミノ}-2’’-{(ビフェニル-4-イル)-フェニルアミノ}-1,1’:4’,1’’-ターフェニル(化合物1-53)の白色粉体15g(収率87%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.62(4H)、7.58-6.91(38H)、6.87(2H)。
実施例15において(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミンに代えて(ナフタレン-1-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{(ナフタレン-1-イル)-(フェニル-d5)アミノ}-1,1’:3’,1’’-ターフェニル(化合物1-54)の白色粉体5.2g(収率30%)を得た。
1H-NMR(CDCl3)で以下の26個の水素のシグナルを検出した。
δ(ppm)=7.99(2H)、7.92(2H)、7.81(2H)、7.72(1H)、7.55-7.36(15H)、7.13-7.07(4H)。
実施例18において(ビフェニル-4-イル)-{2-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンに代えてビス(ビフェニル-4-イル)-{2-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}アミンを用い、同様の条件で反応を行うことによって、2-{ビス(ビフェニル-4-イル)アミノ}-4’’-{(ビフェニル-4-イル)-フェニルアミノ}-1,1’:4’,1’’-ターフェニル(化合物1-56)の白色粉体15.7g(収率94%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.60(2H)、7.56-6.97(42H)。
実施例18において4-ブロモ-4’-{(ビフェニル-4-イル)-フェニルアミノ}-ビフェニルに代えて4-ブロモ-4’-{ビス(ビフェニル-4-イル)アミノ}-ビフェニルを用い、(ビフェニル-4-イル)-{2-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンに代えて2-{ビス(ビフェニル-4-イル)アミノ}フェニルボロン酸を用い、同様の条件で反応を行うことによって、2、4’’-ビス{ビス(ビフェニル-4-イル)アミノ}-1,1’:4’,1’’-ターフェニル(化合物1-57)の白色粉体12g(収率76%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.65-6.98(48H)。
実施例19において(トリフェニレン-2-イル)-フェニルアミンに代えて(ビフェニル-4-イル)-(ナフタレン-1-イル)アミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{(ビフェニル-4-イル)-(ナフタレン-1-イル)アミノ}-1,1’:3’,1’’-ターフェニル(化合物1-59)の白色粉体6.4g(収率36%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.02(2H)、7.94(2H)、7.84(2H)、7.76(1H)7.62-7.38(27H)、7.33(2H)、7.19-7.13(8H)。
実施例19において(トリフェニレン-2-イル)-フェニルアミンに代えて(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-1,1’:3’,1’’-ターフェニル(化合物1-60)の白色粉体14.6g(収率80%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.84(1H)、7.70-7.03(35H)、1.48(12H)。
実施例18において4-ブロモ-4’-{(ビフェニル-4-イル)-フェニルアミノ}-ビフェニルに代えて4-ブロモ-4’-{(ナフタレン-1-イル)-フェニルアミノ}-ビフェニルを用い、(ビフェニル-4-イル)-{2-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンに代えて2-{ビス(ビフェニル-4-イル)アミノ}フェニルボロン酸を用い、同様の条件で反応を行うことによって、2-{ビス(ビフェニル-4-イル)アミノ}-4’’-{(ナフタレン-1-イル)-フェニルアミノ}-1,1’:4’,1’’-ターフェニル(化合物1-62)の白色粉体12.8g(収率75%)を得た。
1H-NMR(CDCl3)で以下の42個の水素のシグナルを検出した。
δ(ppm)=7.99(2H)、7.93(2H)、7.81(2H)、7.57-6.96(36H)。
実施例18において4-ブロモ-4’-{(ビフェニル-4-イル)-フェニルアミノ}-ビフェニルに代えて4-ブロモ-4’-{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-ビフェニルを用い、同様の条件で反応を行うことによって、2-{(ビフェニル-4-イル)-フェニルアミノ}-4’’-{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-1,1’:4’,1’’-ターフェニル(化合物1-63)の白色粉体11.7g(収率73%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.68(1H)、7.64-6.84(37H)、1.48(6H)。
実施例19において、4,4’’-ジブロモ-1,1’:3’,1’’-ターフェニルに代えて4,4’’-ジブロモ-1,1’:2’,1’’-ターフェニルを用い、(トリフェニレン-2-イル)-フェニルアミンに代えて(ビフェニル-4-イル)-(ナフタレン-1-イル)アミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{(ビフェニル-4-イル)-(ナフタレン-1-イル)アミノ}-1,1’:2’,1’’-ターフェニル(化合物1-67)の白色粉体5.0g(収率30%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.93-7.84(4H)、7.79(2H)、7.60-7.26(24H)、7.25-6.92(14H)
実施例19において、4,4’’-ジブロモ-1,1’:3’,1’’-ターフェニルに代えて4,4’’-ジブロモ-1,1’:2’,1’’-ターフェニルを用い、(トリフェニレン-2-イル)-フェニルアミンに代えて{4-(ナフタレン-1-イル)フェニル}-フェニルアミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス[{4-(ナフタレン-1-イル)フェニル}-フェニルアミノ]-1,1’:2’,1’’-ターフェニル(化合物1-68)の白色粉体7.3g(収率43%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.01(2H)、7.91(2H)、7.84(2H)、7.53-6.98(38H)
実施例14において、3-ブロモヨードベンゼンに代えて1,3-ジヨードベンゼンを用い、(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンに代えて2-[{4-(ナフタレン-1-イル)フェニル}-フェニルアミノ]-フェニルボロン酸を用い、同様の条件で反応を行うことによって、2,2’’-ビス[{4-(ナフタレン-1-イル)フェニル}-フェニルアミノ]-1,1’:3’,1’’-ターフェニル(化合物1-69)の白色粉体7.3g(収率43%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=7.94-6.85(44H)。
実施例19において、(トリフェニレン-2-イル)-フェニルアミンに代えて{4-(ナフタレン-1-イル)フェニル}-フェニルアミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス[{4-(ナフタレン-1-イル)フェニル}-フェニルアミノ]-1,1’:3’,1’’-ターフェニル(化合物1-71)の白色粉体16.7g(収率79%)を得た。
1H-NMR(CDCl3)で以下の44個の水素のシグナルを検出した。
δ(ppm)=8.08(2H)、7.94(2H)、7.90-7.80(3H)、7.65-7.00(37H)。
実施例15において、1,3-ジブロモベンゼンに代えて1,4-ジブロモベンゼンを用い、(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミンに代えて2-{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-フェニルボロン酸を用い、同様の条件で反応を行うことによって、2,2’’-ビス{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-1,1’:4’,1’’-ターフェニル(化合物1-75)の白色粉体13.7g(収率76%)を得た。
1H-NMR(THF-d8)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.53(2H)、7.35-6.81(30H)、6.76(2H)、6.67(2H)、1.29(12H)。
実施例15において、1,3-ジブロモベンゼンに代えて1,4-ジブロモベンゼンを用い、(ビフェニル-4-イル)-{4-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-(フェニル-d5)アミンに代えて2-{ビス(ビフェニル-4-イル)アミノ)-フェニルボロン酸を用い、同様の条件で反応を行うことによって、2,2’’-ビス{ビス(ビフェニル-4-イル)アミノ}-1,1’:4’,1’’-ターフェニル(化合物1-76)の白色粉体15.7g(収率78%)を得た。
1H-NMR(THF-d8)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.51-7.45(8H)、7.33-7.18(28H)、7.00(4H)、6.90-6.82(8H)。
実施例18において、4-ブロモ-4’-{(ビフェニル-4-イル)-フェニルアミノ}-ビフェニルに代えて4-ブロモ-2’-{4-(ナフタレン-1-イル)フェニル}-フェニルアミノ}-ビフェニルを用い、(ビフェニル-4-イル)-{2-(4,4,5,5-テトラメチル-[1,3,2]ジオキサボラン-2-イル)フェニル}-フェニルアミンに代えて2-{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-フェニルボロン酸を用い、同様の条件で反応を行うことによって、2-{(9,9-ジメチル-9H-フルオレン-2-イル)-フェニルアミノ}-2’’-[{4-(ナフタレン-1-イル)フェニル}-フェニルアミノ]-1,1’:4’,1’’-ターフェニル(化合物1-81)の白色粉体7.3g(収率48%)を得た。
1H-NMR(THF-d8)で以下の46個の水素のシグナルを検出した。
δ(ppm)=7.89-7.76(3H)、7.55-6.69(37H)、1.29(6H)。
窒素置換した反応容器に、4,4’’-ジヨード-1,1’;4’,1’’-ターフェニル13.0g、N-フェニル-N-(2-フェニル-ビフェニル-4-イル)アミン20.0g、銅粉0.18g、炭酸カリウム11.3g、3,5-ジ-tert-ブチルサリチル酸0.7g、亜硫酸水素ナトリウム0.86g、ドデシルベンゼン30mlを加えて加熱し、210℃で24時間撹拌した。冷却し、キシレン30ml、メタノール60mlを加えた後、ろ過により固体を採取した。この固体にトルエン250ml、シリカゲル20gを加え、90℃まで加熱しながら撹拌した後、熱時ろ過を行うことによって不溶物を除去した。濃縮した後、酢酸エチル、メタノールを加えることによって析出する粗製物を採取し、クロロベンゼンを用いた再結晶、メタノールを用いた還流洗浄を行うことによって、4,4’’-ビス{N-フェニル-N-(2-フェニル-ビフェニル-4-イル)アミノ}-1,1’;4’,1’’-ターフェニル(化合物1-103)の白色粉体16.9g(収率72%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.68(4H)、7.62-7.55(4H)、7.39-7.06(40H)。
実施例19において、4,4’’-ジブロモ-1,1’:3’,1’’-ターフェニルに代えて4,4’’-ジブロモ-1,1’;2’,1’’-ターフェニルを用い、(トリフェニレン-2-イル)-フェニルアミンに代えて、N-フェニル-N-(2-フェニル-ビフェニル-4-イル)アミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{N-フェニル-N-(2-フェニル-ビフェニル-4-イル)アミノ}-1,1’;2’,1’’-ターフェニル(化合物1-104)の白色粉体4.3g(収率42%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.50-7.39(4H)、7.31-6.97(44H)。
実施例19において、(トリフェニレン-2-イル)-フェニルアミンに代えて、N-フェニル-N-(2-フェニル-ビフェニル-4-イル)アミンを用い、同様の条件で反応を行うことによって、4,4’’-ビス{N-フェニル-N-(2-フェニル-ビフェニル-4-イル)アミノ}-1,1’;3’,1’’-ターフェニル(化合物1-105)の白色粉体7.7g(収率53%)を得た。
1H-NMR(CDCl3)で以下の48個の水素のシグナルを検出した。
δ(ppm)=7.81(2H)、7.61-7.48(14H)、7.39-7.06(32H)。
融点 ガラス転移点
実施例1の化合物 263℃ 111℃
実施例2の化合物 210℃ 113℃
実施例3の化合物 265℃ 111℃
実施例4の化合物 279℃ 107℃
実施例5の化合物 266℃ 104℃
実施例6の化合物 263℃ 111℃
実施例7の化合物 262℃ 117℃
実施例8の化合物 303℃ 149℃
実施例10の化合物 365℃ 163℃
実施例11の化合物 289℃ 138℃
実施例13の化合物 観測されず 125℃
実施例14の化合物 252℃ 108℃
実施例15の化合物 252℃ 108℃
実施例16の化合物 観測されず 106℃
実施例17の化合物 観測されず 135℃
実施例18の化合物 観測されず 107℃
実施例19の化合物 323℃ 159℃
実施例20の化合物 290℃ 146℃
実施例21の化合物 観測されず 119℃
実施例22の化合物 観測されず 106℃
実施例23の化合物 観測されず 118℃
実施例24の化合物 観測されず 133℃
実施例25の化合物 観測されず 136℃
実施例26の化合物 286℃ 124℃
実施例27の化合物 観測されず 117℃
実施例28の化合物 218℃ 114℃
実施例29の化合物 観測されず 127℃
実施例31の化合物 観測されず 110℃
実施例32の化合物 観測されず 122℃
実施例33の化合物 269℃ 117℃
実施例34の化合物 277℃ 122℃
実施例35の化合物 観測されず 117℃
実施例36の化合物 249℃ 124℃
実施例37の化合物 観測されず 115℃
実施例38の化合物 観測されず 122℃
仕事関数
実施例1の化合物 5.65eV
実施例3の化合物 5.65eV
実施例4の化合物 5.67eV
実施例5の化合物 5.66eV
実施例6の化合物 5.69eV
実施例7の化合物 5.63eV
実施例8の化合物 5.70eV
実施例9の化合物 5.72eV
実施例10の化合物 5.62eV
実施例11の化合物 5.61eV
実施例12の化合物 5.62eV
実施例13の化合物 5.67eV
実施例14の化合物 5.75eV
実施例15の化合物 5.75eV
実施例16の化合物 5.79eV
実施例17の化合物 5.68eV
実施例18の化合物 5.76eV
実施例19の化合物 5.70eV
実施例20の化合物 5.79eV
実施例21の化合物 5.71eV
実施例22の化合物 5.79eV
実施例23の化合物 5.72eV
実施例24の化合物 5.70eV
実施例25の化合物 5.71eV
実施例26の化合物 5.65eV
実施例27の化合物 5.70eV
実施例28の化合物 5.67eV
実施例29の化合物 5.69eV
実施例30の化合物 5.75eV
実施例31の化合物 5.84eV
実施例32の化合物 5.76eV
実施例33の化合物 5.72eV
実施例34の化合物 5.67eV
実施例35の化合物 5.76eV
実施例36の化合物 5.67eV
実施例37の化合物 5.75eV
実施例38の化合物 5.76eV
窒素置換した反応容器に5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)5.0g、ビス{4-(tert-ブチル)フェニル}アミン6.0g、パラジウムアセテート0.08g、tert-ブトキシナトリウム3.4g、トリ-tert-ブチルホスフィン0.07g、トルエン60mlを加えて加熱し、2時間還流撹拌した。室温まで冷却し、ジクロロメタン、水を加えた後、分液操作を行うことによって有機層を採取した。有機層を濃縮した後、カラムクロマトグラフによる精製を行うことによって、N5’,N5’,N9’,N9’-テトラキス{4-(tert-ブチル)フェニル}スピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)-5’,9’-ジアミン(化合物8-1)の粉体3.1g(収率36%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、2,7-ジブロモスピロ(ジベンゾ[5,6:7,8]フルオレノ[4,3-b]ベンゾフラン-5,9’-フルオレン)を用い、同様の条件で反応を行うことによって、N2,N2,N7,N7-テトラキス{4-(tert-ブチル)フェニル}スピロ(ジベンゾ[5,6:7,8]フルオレノ[4,3-b]ベンゾフラン-5,9’-フルオレン)-2,7-ジアミン(化合物8-2)の粉体2.5g(収率31%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5,9-ジブロモスピロ(ベンゾ[5,6]フルオレノ[4,3-b]ベンゾフラン-7,9’-フルオレン)を用い、同様の条件で反応を行うことによって、N5,N5,N9,N9-テトラキス{4-(tert-ブチル)フェニル}スピロ(ベンゾ[5,6]フルオレノ[4,3-b]ベンゾフラン-7,9’-フルオレン)-5,9-ジアミン(化合物8-3)の粉体3.0g(収率36%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、6’,10’-ジブロモスピロ(フルオレン-9,8’-フルオレノ[3,4-b]ベンゾフラン)を用い、同様の条件で反応を行うことによって、N6’,N6’,N10’,N10’-テトラキス{4-(tert-ブチル)フェニル}スピロ(フルオレン-9,8’-フルオレノ[3,4-b]ベンゾフラン)-6’,10’-ジアミン(化合物8-4)の粉体2.5g(収率34%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5,9-ジブロモスピロ(フルオレノ[4,3-b]ベンゾフラン-7,9’-キサンテン)を用い、同様の条件で反応を行うことによって、N5,N5,N9,N9-テトラキス{4-(tert-ブチル)フェニル}スピロ(フルオレノ[4,3-b]ベンゾフラン-7,9’-キサンテン)-5,9-ジアミン(化合物8-5)の粉体2.4g(収率28%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5’,9’-ジブロモ-2-フルオロスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)を用い、ビス{4-(tert-ブチル)フェニル}アミンに代えて、(ビフェニル-4-イル)-{4-(tert-ブチル)フェニル}アミンを用い、同様の条件で反応を行うことによって、N5’,N9’-ビス(ビフェニル-4-イル)-N5’,N9’-ビス{4-(tert-ブチル)フェニル}-2-フルオロスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)-5’,9’-ジアミン(化合物8-6)の粉体2.4g(収率28%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5,9-ジブロモスピロ(ベンゾ[5,6]フルオレノ[4,3-b]ベンゾフラン-7,9’-フルオレン)を用い、ビス{4-(tert-ブチル)フェニル}アミンに代えて、{4-(tert-ブチル)フェニル}-{4-(トリメチルシリル)フェニル}アミンを用い、同様の条件で反応を行うことによって、N5,N9-ビス{4-(tert-ブチル)フェニル}-N5,N9-ビス{4-(トリメチルシリル)フェニル}スピロ(ベンゾ[5,6]フルオレノ[4,3-b]ベンゾフラン-7,9’-フルオレン)-5,9-ジアミン(化合物8-7)の粉体3.0g(収率35%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾチオフェン)を用い、ビス{4-(tert-ブチル)フェニル}アミンに代えて、{4-(tert-ブチル)フェニル}-{4-(トリメチルシリル)フェニル}アミンを用い、同様の条件で反応を行うことによって、N5’,N9’-ビス{4-(tert-ブチル)フェニル}-N5’,N9’-ビス{4-(トリメチルシリル)フェニル}スピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾチオフェン)-5’,9’-ジアミン(化合物8-8)の粉体3.2g(収率37%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5,9-ジブロモスピロ(ベンゾ[4’,5’]チエノ[2’,3’:5,6]フルオレノ[4,3-b]ベンゾフラン-7,9’-フルオレン)を用い、ビス{4-(tert-ブチル)フェニル}アミンに代えて、{4-(tert-ブチル)フェニル}-(ビフェニル-4-イル)アミンを用い、同様の条件で反応を行うことによって、N5,N9-ビス(ビフェニル-4-イル)-N5,N9-ビス{4-(tert-ブチル)フェニル}スピロ(ベンゾ[4’,5’]チエノ[2’,3’:5,6]フルオレノ[4,3-b]ベンゾフラン-7,9’-フルオレン)-5,9-ジアミン(化合物8-9)の粉体2.8g(収率34%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、5’,9’-ジブロモ-12’,12’-ジメチル-12’H-スピロ(フルオレン-9,7’-インデノ[1,2-a]フルオレン)を用い、同様の条件で反応を行うことによって、N5’,N5’,N9’,N9’-テトラキス{4-(tert-ブチル)フェニル}-12’,12’-ジメチル-12’H-スピロ(フルオレン-9,7’-インデノ[1,2-a]フルオレン)-5’,9’-ジアミン(化合物8-10)の粉体1.8g(収率49%)を得た。
実施例41において、5’,9’-ジブロモスピロ(フルオレン-9,7’-フルオレノ[4,3-b]ベンゾフラン)に代えて、6’,10’-ジブロモ-5’-メチル-5’H-スピロ(フルオレン-9,8’-インデノ[2,1-c]カルバゾール)を用い、ビス{4-(tert-ブチル)フェニル}アミンに代えて、{4-(tert-ブチル)フェニル}-(ビフェニル-4-イル)アミンを用い、同様の条件で反応を行うことによって、N6’,N10’-ビス(ビフェニル-4-イル)-N6’,N10’-ビス{4-(tert-ブチル)フェニル}-5’-メチル-5’H-スピロ(フルオレン-9,8’-インデノ[2,1-c]カルバゾール)-6’,10’-ジアミン(化合物8-11)の粉体2.3g(収率41%)を得た。
比較のために、実施例52において、正孔注入層3の材料として実施例1の化合物(1-1)に代えて下記構造式の化合物HTM-1を用い、前記構造式の電子アクセプター(Acceptor-1)と下記構造式の化合物HTM-1を、蒸着速度比がAcceptor-1:HTM-1=3:97となる蒸着速度で二元蒸着を行い、膜厚30nmとなるように形成し、正孔輸送層4の材料として実施例1の化合物(1-1)に代えて下記構造式の化合物HTM-1を用い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例53において、正孔注入層3の材料として実施例1の化合物(1-1)に代えて前記構造式の化合物HTM-1を用い、前記構造式の電子アクセプター(Acceptor-1)と前記構造式の化合物HTM-1を、蒸着速度比がAcceptor-1:HTM-1=3:97となる蒸着速度で二元蒸着を行い、膜厚30nmとなるように形成し、正孔輸送層4の材料として実施例1の化合物(1-1)に代えて前記構造式の化合物HTM-1を用い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例54において、正孔注入層3の材料として実施例1の化合物(1-1)に代えて前記構造式の化合物HTM-1を用い、前記構造式の電子アクセプター(Acceptor-1)と前記構造式の化合物HTM-1を、蒸着速度比がAcceptor-1:HTM-1=3:97となる蒸着速度で二元蒸着を行い、膜厚30nmとなるように形成し、正孔輸送層4の材料として実施例1の化合物(1-1)に代えて前記構造式の化合物HTM-1を用い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例55において、正孔注入層3の材料として実施例1の化合物(1-1)に代えて前記構造式の化合物HTM-1を用い、前記構造式の電子アクセプター(Acceptor-1)と前記構造式の化合物HTM-1を、蒸着速度比がAcceptor-1:HTM-1=3:97となる蒸着速度で二元蒸着を行い、膜厚30nmとなるように形成し、正孔輸送層4の材料として実施例1の化合物(1-1)に代えて前記構造式の化合物HTM-1を用い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例53において、正孔輸送層4の材料として実施例1の化合物(1-1)に代えて前記構造式の電子アクセプター(Acceptor-1)と実施例1の化合物(1-1)を用い、前記構造式の電子アクセプター(Acceptor-1)と実施例1の化合物(1-1)を、蒸着速度比がAcceptor-1:化合物(1-1)=3:97となる蒸着速度で二元蒸着を行い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例55において、正孔輸送層4の材料として実施例1の化合物(1-1)に代えて前記構造式の電子アクセプター(Acceptor-1)と実施例1の化合物(1-1)を用い、前記構造式の電子アクセプター(Acceptor-1)と実施例1の化合物(1-1)を、蒸着速度比がAcceptor-1:化合物(1-1)=3:97となる蒸着速度で二元蒸着を行い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例57において、正孔輸送層4の材料として実施例4の化合物(1-2)に代えて前記構造式の電子アクセプター(Acceptor-1)と実施例4の化合物(1-2)を用い、前記構造式の電子アクセプター(Acceptor-1)と実施例4の化合物(1-2)を、蒸着速度比がAcceptor-1:化合物(1-2)=3:97となる蒸着速度で二元蒸着を行い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
比較のために、実施例59において、正孔輸送層4の材料として実施例4の化合物(1-2)に代えて前記構造式の電子アクセプター(Acceptor-1)と実施例4の化合物(1-2)を用い、前記構造式の電子アクセプター(Acceptor-1)と実施例4の化合物(1-2)を、蒸着速度比がAcceptor-1:化合物(1-2)=3:97となる蒸着速度で二元蒸着を行い、膜厚40nmとなるように形成した以外は同様の条件で有機EL素子を作製した。作製した有機EL素子について、大気中、常温で特性測定を行った。作製した有機EL素子に直流電圧を印加したときの発光特性の測定結果を表1にまとめて示した。
2 透明陽極
3 正孔注入層
4 正孔輸送層
5 発光層
6 電子輸送層
7 電子注入層
8 陰極
Claims (14)
- 前記発光層に隣接する層は電子アクセプターを含有しないことを特徴とする請求項1記載の有機エレクトロルミネッセンス素子。
- 前記電子アクセプターが、トリスブロモフェニルアミンヘキサクロルアンチモン、テトラシアノキノンジメタン(TCNQ)、2,3,5,6-テトラフルオロ-テトラシアノ-1,4-ベンゾキノンジメタン(F4TCNQ)、ラジアレン誘導体から選ばれる電子アクセプターである、請求項1または2に記載の有機エレクトロルミネッセンス素子。
- 前記正孔輸送層が、分子中にトリフェニルアミン構造を2個~6個、単結合またはヘテロ原子を含まない2価基で連結した構造を有するアリールアミン化合物を含有する、請求項1~4のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 前記分子中にトリフェニルアミン構造を2個~6個、単結合またはヘテロ原子を含まない2価基で連結した構造を有するアリールアミン化合物が、下記一般式(3)で表されるアリールアミン化合物であることを特徴とする、請求項5記載の有機エレクトロルミネッセンス素子。
(式中、R1~R6は重水素原子、フッ素原子、塩素原子、シアノ基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、または置換もしくは無置換のアリールオキシ基を表す。r1~r6は同一でも異なってもよく、r1、r2、r5、r6は0~5の整数を表し、r3、r4は0~4の整数を表す。r1、r2、r5、r6が2~5の整数である場合、または、r3、r4が2~4の整数である場合、同一のベンゼン環に複数個結合するR1~R6は相互に同一でも異なってもよく、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。L1は2価の連結基を表す。) - 前記分子中にトリフェニルアミン構造を2個~6個、単結合またはヘテロ原子を含まない2価基で連結した構造を有するアリールアミン化合物が、下記一般式(4)で表されるアリールアミン化合物であることを特徴とする、請求項5記載の有機エレクトロルミネッセンス素子。
(式中、R7~R18は重水素原子、フッ素原子、塩素原子、シアノ基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、または置換もしくは無置換のアリールオキシ基を表す。r7~r18は同一でも異なってもよく、r7、r8、r11、r14、r17、r18は0~5の整数を表し、r9、r10、r12、r13、r15、r16は0~4の整数を表す。r7、r8、r11、r14、r17、r18が2~5の整数である場合、または、r9、r10、r12、r13、r15、r16が2~4の整数である場合、同一のベンゼン環に複数個結合するR7~R18は相互に同一でも異なってもよく、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。L2、L3、L4は同一でも異なってもよく、2価の連結基、もしくは単結合を表す。) - 前記電子輸送層が、下記一般式(5)で表されるアントラセン環構造を有する化合物を含有することを特徴とする、請求項1~7のいずれか一項に記載の有機エレクトロルミネッセンス素子。
(式中、A1は置換もしくは無置換の芳香族炭化水素の2価基、置換もしくは無置換の芳香族複素環の2価基、置換もしくは無置換の縮合多環芳香族の2価基、または単結合を表し、Bは置換もしくは無置換の芳香族複素環基を表し、Cは置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基を表し、Dは互いに同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基を表し、p、qは、pとqの和が9となる関係を維持しつつ、pは7または8を表し、qは1または2を表す。) - 前記電子輸送層が、下記一般式(6)で表されるピリミジン環構造を有する化合物を含有することを特徴とする、請求項1~7のいずれか一項に記載の有機エレクトロルミネッセンス素子。
(式中、Ar8は、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基を表し、Ar9、Ar10は同一でも異なっていてもよく、水素原子、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基を表し、Aは、下記構造式(7)で示される1価基を表す。ここで、Ar9とAr10は同時に水素原子となることはないものとする。)
(式中、Ar11は、置換もしくは無置換の芳香族複素環基を表し、R19~R22は、同一でも異なってもよく水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、トリフルオロメチル基、炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基を表し、R19~R22とAr11が単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成していてもよい。) - 前記発光層が、青色発光性ドーパントを含有することを特徴とする、請求項1~9のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 前記発光層が、ピレン誘導体である青色発光性ドーパントを含有することを特徴とする、請求項10記載の有機エレクトロルミネッセンス素子。
- 前記青色発光性ドーパントが、下記一般式(8)で表される縮合環構造を有するアミン誘導体である発光ドーパントを含有することを特徴とする、請求項10記載の有機エレクトロルミネッセンス素子。
(式中、A2は置換もしくは無置換の芳香族炭化水素の2価基、置換もしくは無置換の芳香族複素環の2価基、置換もしくは無置換の縮合多環芳香族の2価基、または単結合を表し、Ar12とAr13は相互に同一でも異なってもよく、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、または置換もしくは無置換の縮合多環芳香族基であって、単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよい。R23~R26は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、置換もしくは無置換のアリールオキシ基、または芳香族炭化水素基、芳香族複素環基もしくは縮合多環芳香族基から選ばれる基によって置換されたジ置換アミノ基であって、それぞれの基同士で単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、R23~R26が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、または一置換アミノ基を介して互いに結合して環を形成してもよい。R27~R29は相互に同一でも異なってもよく、水素原子、重水素原子、フッ素原子、塩素原子、シアノ基、ニトロ基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキルオキシ基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキルオキシ基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、または置換もしくは無置換のアリールオキシ基であって、それぞれの基同士で単結合、置換もしくは無置換のメチレン基、酸素原子または硫黄原子を介して互いに結合して環を形成してもよく、R27~R29が結合しているベンゼン環と、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、または一置換アミノ基を介して互いに結合して環を形成してもよい。R30とR31は相互に同一でも異なってもよく、置換基を有していてもよい炭素原子数1ないし6の直鎖状もしくは分岐状のアルキル基、置換基を有していてもよい炭素原子数5ないし10のシクロアルキル基、置換基を有していてもよい炭素原子数2ないし6の直鎖状もしくは分岐状のアルケニル基、置換もしくは無置換の芳香族炭化水素基、置換もしくは無置換の芳香族複素環基、置換もしくは無置換の縮合多環芳香族基、または置換もしくは無置換のアリールオキシ基であって、それぞれの基同士で単結合、置換もしくは無置換のメチレン基、酸素原子、硫黄原子、または一置換アミノ基を介して互いに結合して環を形成してもよい。) - 前記発光層が、アントラセン誘導体を含有することを特徴とする、請求項1~12のいずれか一項に記載の有機エレクトロルミネッセンス素子。
- 前記発光層が、アントラセン誘導体であるホスト材料を含有することを特徴とする、請求項13記載の有機エレクトロルミネッセンス素子。
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US20170346015A1 (en) | 2017-11-30 |
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