WO2014042006A1 - Nouveau dérivé thiéno-indole et élément électroluminescent organique utilisant ledit dérivé - Google Patents
Nouveau dérivé thiéno-indole et élément électroluminescent organique utilisant ledit dérivé Download PDFInfo
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- WO2014042006A1 WO2014042006A1 PCT/JP2013/072963 JP2013072963W WO2014042006A1 WO 2014042006 A1 WO2014042006 A1 WO 2014042006A1 JP 2013072963 W JP2013072963 W JP 2013072963W WO 2014042006 A1 WO2014042006 A1 WO 2014042006A1
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- WIPO (PCT)
- Prior art keywords
- group
- thienoindole
- derivative
- general formula
- carbon atoms
- Prior art date
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- KWQMJXZUGBNSOY-UHFFFAOYSA-N 1h-thieno[2,3-g]indole Chemical class C1=C2SC=CC2=C2NC=CC2=C1 KWQMJXZUGBNSOY-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 230000005525 hole transport Effects 0.000 claims abstract description 43
- 238000002347 injection Methods 0.000 claims abstract description 33
- 239000007924 injection Substances 0.000 claims abstract description 33
- 230000000903 blocking effect Effects 0.000 claims abstract description 32
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims abstract description 31
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 125
- 125000004432 carbon atom Chemical group C* 0.000 claims description 38
- 125000001424 substituent group Chemical group 0.000 claims description 28
- 125000006615 aromatic heterocyclic group Chemical group 0.000 claims description 27
- 239000012044 organic layer Substances 0.000 claims description 16
- 125000000217 alkyl group Chemical group 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 14
- 238000005401 electroluminescence Methods 0.000 claims description 13
- 125000003342 alkenyl group Chemical group 0.000 claims description 12
- 125000004434 sulfur atom Chemical group 0.000 claims description 12
- 125000003545 alkoxy group Chemical group 0.000 claims description 10
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 claims description 10
- 125000004104 aryloxy group Chemical group 0.000 claims description 9
- 125000000000 cycloalkoxy group Chemical group 0.000 claims description 9
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 9
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 9
- 229910052801 chlorine Inorganic materials 0.000 claims description 7
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 7
- 125000004093 cyano group Chemical group *C#N 0.000 claims description 7
- 229910052805 deuterium Inorganic materials 0.000 claims description 7
- 125000004431 deuterium atom Chemical group 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 125000001153 fluoro group Chemical group F* 0.000 claims description 7
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 7
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 125000004429 atom Chemical group 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 52
- 150000001875 compounds Chemical class 0.000 abstract description 51
- 239000010409 thin film Substances 0.000 abstract description 18
- -1 aromatic amine compound Chemical class 0.000 description 45
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 15
- 125000003118 aryl group Chemical group 0.000 description 12
- 239000000758 substrate Substances 0.000 description 12
- 229940125773 compound 10 Drugs 0.000 description 11
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 230000009477 glass transition Effects 0.000 description 7
- 238000005160 1H NMR spectroscopy Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- WGFNXGPBPIJYLI-UHFFFAOYSA-N 2,6-difluoro-3-[(3-fluorophenyl)sulfonylamino]-n-(3-methoxy-1h-pyrazolo[3,4-b]pyridin-5-yl)benzamide Chemical compound C1=C2C(OC)=NNC2=NC=C1NC(=O)C(C=1F)=C(F)C=CC=1NS(=O)(=O)C1=CC=CC(F)=C1 WGFNXGPBPIJYLI-UHFFFAOYSA-N 0.000 description 5
- 229940126062 Compound A Drugs 0.000 description 5
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 125000005259 triarylamine group Chemical class 0.000 description 5
- UJOBWOGCFQCDNV-UHFFFAOYSA-N 9H-carbazole Chemical compound C1=CC=C2C3=CC=CC=C3NC2=C1 UJOBWOGCFQCDNV-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- LNUFLCYMSVYYNW-ZPJMAFJPSA-N [(2r,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[(2r,3r,4s,5r,6r)-6-[[(3s,5s,8r,9s,10s,13r,14s,17r)-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-3-yl]oxy]-4,5-disulfo Chemical compound O([C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1[C@@H](COS(O)(=O)=O)O[C@H]([C@@H]([C@H]1OS(O)(=O)=O)OS(O)(=O)=O)O[C@@H]1C[C@@H]2CC[C@H]3[C@@H]4CC[C@@H]([C@]4(CC[C@@H]3[C@@]2(C)CC1)C)[C@H](C)CCCC(C)C)[C@H]1O[C@H](COS(O)(=O)=O)[C@@H](OS(O)(=O)=O)[C@H](OS(O)(=O)=O)[C@H]1OS(O)(=O)=O LNUFLCYMSVYYNW-ZPJMAFJPSA-N 0.000 description 4
- 150000004982 aromatic amines Chemical class 0.000 description 4
- 125000001164 benzothiazolyl group Chemical group S1C(=NC2=C1C=CC=C2)* 0.000 description 4
- 125000004196 benzothienyl group Chemical group S1C(=CC2=C1C=CC=C2)* 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 150000001716 carbazoles Chemical group 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 125000004988 dibenzothienyl group Chemical group C1(=CC=CC=2SC3=C(C21)C=CC=C3)* 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 4
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 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 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 125000001544 thienyl group Chemical group 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- 238000005481 NMR spectroscopy Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 150000004945 aromatic hydrocarbons Chemical group 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 125000000499 benzofuranyl group Chemical group O1C(=CC2=C1C=CC=C2)* 0.000 description 3
- 125000004541 benzoxazolyl group Chemical group O1C(=NC2=C1C=CC=C2)* 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- 125000002541 furyl group Chemical group 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 150000004322 quinolinols Chemical class 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical compound C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 description 2
- VVCMGAUPZIKYTH-VGHSCWAPSA-N 2-acetyloxybenzoic acid;[(2s,3r)-4-(dimethylamino)-3-methyl-1,2-diphenylbutan-2-yl] propanoate;1,3,7-trimethylpurine-2,6-dione Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O.CN1C(=O)N(C)C(=O)C2=C1N=CN2C.C([C@](OC(=O)CC)([C@H](C)CN(C)C)C=1C=CC=CC=1)C1=CC=CC=C1 VVCMGAUPZIKYTH-VGHSCWAPSA-N 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 2
- LZPWAYBEOJRFAX-UHFFFAOYSA-N 4,4,5,5-tetramethyl-1,3,2$l^{2}-dioxaborolane Chemical compound CC1(C)O[B]OC1(C)C LZPWAYBEOJRFAX-UHFFFAOYSA-N 0.000 description 2
- VAOFDVUBRSYAGX-UHFFFAOYSA-N 4-(9,9-dimethylfluoren-2-yl)-2-(9-phenylcarbazol-3-yl)thieno[3,2-b]indole Chemical compound CC1(C2=CC=CC=C2C3=C1C=C(C=C3)N4C5=CC=CC=C5C6=C4C=C(S6)C7=CC8=C(C=C7)N(C9=CC=CC=C98)C1=CC=CC=C1)C VAOFDVUBRSYAGX-UHFFFAOYSA-N 0.000 description 2
- AWXGSYPUMWKTBR-UHFFFAOYSA-N 4-carbazol-9-yl-n,n-bis(4-carbazol-9-ylphenyl)aniline Chemical compound C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(N(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 AWXGSYPUMWKTBR-UHFFFAOYSA-N 0.000 description 2
- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 2
- VFUDMQLBKNMONU-UHFFFAOYSA-N 9-[4-(4-carbazol-9-ylphenyl)phenyl]carbazole Chemical group C12=CC=CC=C2C2=CC=CC=C2N1C1=CC=C(C=2C=CC(=CC=2)N2C3=CC=CC=C3C3=CC=CC=C32)C=C1 VFUDMQLBKNMONU-UHFFFAOYSA-N 0.000 description 2
- JQUCWIWWWKZNCS-LESHARBVSA-N C(C1=CC=CC=C1)(=O)NC=1SC[C@H]2[C@@](N1)(CO[C@H](C2)C)C=2SC=C(N2)NC(=O)C2=NC=C(C=C2)OC(F)F Chemical compound C(C1=CC=CC=C1)(=O)NC=1SC[C@H]2[C@@](N1)(CO[C@H](C2)C)C=2SC=C(N2)NC(=O)C2=NC=C(C=C2)OC(F)F JQUCWIWWWKZNCS-LESHARBVSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-WFGJKAKNSA-N Dimethyl sulfoxide Chemical compound [2H]C([2H])([2H])S(=O)C([2H])([2H])[2H] IAZDPXIOMUYVGZ-WFGJKAKNSA-N 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 2
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000006069 Suzuki reaction reaction Methods 0.000 description 2
- 102100028692 T-cell leukemia translocation-altered gene protein Human genes 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- HXGDTGSAIMULJN-UHFFFAOYSA-N acenaphthylene Chemical compound C1=CC(C=C2)=C3C2=CC=CC3=C1 HXGDTGSAIMULJN-UHFFFAOYSA-N 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- 125000003609 aryl vinyl group Chemical group 0.000 description 2
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 2
- IPWKHHSGDUIRAH-UHFFFAOYSA-N bis(pinacolato)diboron Chemical compound O1C(C)(C)C(C)(C)OB1B1OC(C)(C)C(C)(C)O1 IPWKHHSGDUIRAH-UHFFFAOYSA-N 0.000 description 2
- UFVXQDWNSAGPHN-UHFFFAOYSA-K bis[(2-methylquinolin-8-yl)oxy]-(4-phenylphenoxy)alumane Chemical compound [Al+3].C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC=C([O-])C2=NC(C)=CC=C21.C1=CC([O-])=CC=C1C1=CC=CC=C1 UFVXQDWNSAGPHN-UHFFFAOYSA-K 0.000 description 2
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- XJHCXCQVJFPJIK-UHFFFAOYSA-M caesium fluoride Chemical compound [F-].[Cs+] XJHCXCQVJFPJIK-UHFFFAOYSA-M 0.000 description 2
- 125000004623 carbolinyl group Chemical group 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- 238000006880 cross-coupling reaction Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 2
- IYYZUPMFVPLQIF-UHFFFAOYSA-N dibenzothiophene Chemical compound C1=CC=C2C3=CC=CC=C3SC2=C1 IYYZUPMFVPLQIF-UHFFFAOYSA-N 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 125000003914 fluoranthenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC=C4C1=C23)* 0.000 description 2
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
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- PQNFLJBBNBOBRQ-UHFFFAOYSA-N indane Chemical compound C1=CC=C2CCCC2=C1 PQNFLJBBNBOBRQ-UHFFFAOYSA-N 0.000 description 2
- 125000003454 indenyl group Chemical group C1(C=CC2=CC=CC=C12)* 0.000 description 2
- 125000002249 indol-2-yl group Chemical group [H]C1=C([H])C([H])=C2N([H])C([*])=C([H])C2=C1[H] 0.000 description 2
- 125000001041 indolyl group Chemical group 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 2
- 125000005956 isoquinolyl group Chemical group 0.000 description 2
- IBHBKWKFFTZAHE-UHFFFAOYSA-N n-[4-[4-(n-naphthalen-1-ylanilino)phenyl]phenyl]-n-phenylnaphthalen-1-amine Chemical compound C1=CC=CC=C1N(C=1C2=CC=CC=C2C=CC=1)C1=CC=C(C=2C=CC(=CC=2)N(C=2C=CC=CC=2)C=2C3=CC=CC=C3C=CC=2)C=C1 IBHBKWKFFTZAHE-UHFFFAOYSA-N 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
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- 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 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000001624 naphthyl group Chemical group 0.000 description 2
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
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- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
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- 125000005561 phenanthryl group Chemical group 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
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- SJCKRGFTWFGHGZ-UHFFFAOYSA-N magnesium silver Chemical compound [Mg].[Ag] SJCKRGFTWFGHGZ-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- 125000001298 n-hexoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004923 naphthylmethyl group Chemical group C1(=CC=CC2=CC=CC=C12)C* 0.000 description 1
- 125000005186 naphthyloxy group Chemical group C1(=CC=CC2=CC=CC=C12)O* 0.000 description 1
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N o-biphenylenemethane Natural products C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 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
- 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
- 238000009832 plasma treatment Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 125000003367 polycyclic group Chemical group 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 150000003220 pyrenes Chemical class 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
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 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
- 238000000926 separation method Methods 0.000 description 1
- 150000003967 siloles Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229960002317 succinimide Drugs 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
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 150000001651 triphenylamine derivatives Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
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- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
- C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
- C07D495/04—Ortho-condensed systems
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- H10K50/15—Hole transporting layers
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Definitions
- the present invention relates to a novel compound (thienoindole derivative) suitable for an organic electroluminescence element which is a self-luminous element suitable for various display devices and an organic electroluminescence element comprising an organic layer containing the compound.
- organic electroluminescence elements (hereinafter sometimes referred to as organic EL elements) are self-luminous elements, they are brighter and more visible than liquid crystal elements, and can be clearly displayed. I came.
- This laminated structure element is constituted by laminating a phosphor capable of transporting electrons and an aromatic amine compound capable of transporting holes, and both charges are transferred to the phosphor layer.
- high luminance of 1000 cd / m 2 or more can be obtained at a voltage of 10 V or less.
- the light emitting layer can also be prepared by doping a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- a charge transporting compound generally called a host material with a phosphor or a phosphorescent light emitter.
- the light injected from both electrodes is recombined in the light emitting layer to obtain light emission.
- the probability of recombination of holes and electrons is improved by increasing the hole injection property and the electron blocking property of blocking electrons injected from the cathode, and further excitons generated in the light emitting layer.
- 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
- Tg glass transition point
- Non-patent document 2 Non-patent document 2
- the aromatic amine derivatives described in Patent Document 1 and Patent Document 2 there are those having an excellent mobility of hole mobility of 10 ⁇ 3 cm 2 / Vs or more, but the electron blocking property. Insufficient amount of electrons pass through the light-emitting layer, and improvement in luminous efficiency cannot be expected.For higher efficiency, the electron blocking property is higher, and the thin film is more stable and heat resistant. High materials were demanded.
- Patent Documents 3 and 4 As compounds having improved characteristics such as heat resistance and hole injection properties, in Patent Documents 3 and 4, an arylamine compound A having a substituted thienoindole structure and an arylamine compound B having a substituted carbazole structure represented by the following formulas: Has been proposed.
- Patent Document 5 discloses an arylamine compound C having a substituted thienoindole structure represented by the following formula, and has been proposed for use as an organic transistor due to its mobility and stability.
- JP-A-8-48656 Japanese Patent No. 3194657 JP 2010-205815 A WO2008 / 62636 JP 2010-205982 A
- the object of the present invention can be suitably used as a material for producing a high-efficiency, high-durability organic electroluminescence device, has excellent hole injection / transport performance, and has an electronic device capability.
- it is to provide a novel organic compound having high stability in a thin film state and further excellent in heat resistance.
- Another object of the present invention is to provide an organic electroluminescence device comprising an organic layer containing the above organic compound.
- the aromatic tertiary amine structure has a high hole injection / transport capability
- the thienoindole ring structure has an electron blocking property
- such a partial structure has Focusing on the good heat resistance and thin film stability, various compounds having a thienoindole ring structure are designed and chemically synthesized, and various organic electroluminescence devices are prototyped using the compounds. As a result of earnestly evaluating the characteristics, it was confirmed that high efficiency and excellent durability were obtained, and the present invention was completed.
- a thienoindole derivative represented by the following general formula (1) is provided.
- Ar 1 represents an aromatic hydrocarbon group or an aromatic heterocyclic group
- R 1 to R 4 are each a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 5 to 10 carbon atoms, carbon
- R 1 to R 3 may be bonded to each other via a single bond, an optionally substituted methylene group, an oxygen atom or a sulfur atom to form a ring
- X 1 and X 2 are a hydrogen atom, a de
- a 1 represents a divalent aromatic hydrocarbon group, a divalent aromatic heterocyclic group or a single bond
- Ar 2 and Ar 3 each represent an aromatic hydrocarbon group or an aromatic heterocyclic group
- Ar 2 and Ar 3 are a single bond, a methylene group which may have a substituent, an oxygen atom
- they may be bonded to each other via a sulfur atom to form a ring
- a 1 and Ar 2 have a single bond or a substituent.
- a 1 and Ar 2 may be bonded to each other via a methylene group, an oxygen atom or a sulfur atom which may be formed to form a ring.
- the organic electroluminescence device having a pair of electrodes and at least one organic layer sandwiched therebetween, At least one layer of the organic layer contains the thienoindole derivative, and an organic electroluminescence device is provided.
- the organic EL device of the present invention has, for example, a hole transport layer, an electron blocking layer, a hole injection layer, or a light emitting layer as the organic layer containing the thienoindole derivative.
- the thienoindole derivative represented by the general formula (1) described above is a novel compound, and has a structure in which an aromatic tertiary amino group (disubstituted aromatic amino group) is introduced into the thienoindole ring. It has the following characteristics.
- the thienoindole derivative of the present invention is useful as a hole transporting substance used in an organic EL device, and since the thin film state is safe, it is particularly used as an organic layer provided in the organic EL device.
- the following characteristics can be imparted to the EL element.
- an organic EL device in which a hole injection layer and / or a hole transport layer is formed using the thienoindole derivative of the present invention has a high hole injection / mobility, a high electron blocking property, and an electron Because of its high stability against light, it is possible to confine excitons generated in the light emitting layer, further improve the probability of recombination of holes and electrons, obtain high luminous efficiency, and lower the driving voltage. In addition, durability can be improved.
- the driving voltage is low while having high luminous efficiency due to excellent electron blocking ability and excellent hole transportability, Current resistance is improved, and the maximum light emission luminance is improved.
- the thienoindole derivative of the present invention has excellent hole transport properties and a wide band gap as compared with conventional materials, and therefore can be used as a host material for the light emitting layer.
- a fluorescent light-emitting body or phosphorescent light-emitting body called a dopant By supporting a fluorescent light-emitting body or phosphorescent light-emitting body called a dopant and using it as a light-emitting layer, the driving voltage of the organic EL element can be lowered and the light emission efficiency can be improved.
- those in which A 1 and Ar 2 in the structural formula (2) form a ring for example, Compound 18 described later
- Examples 3 and 4 described later are described in Examples 3 and 4 described later.
- the glass transition point is high, the thin film stability is excellent, the work function is also large, and the hole transport ability is particularly good.
- the thienoindole derivative of the present invention is extremely useful as a constituent material of a hole injection layer, a hole transport layer, an electron blocking layer or a light emitting layer of an organic EL device, has excellent electron blocking ability, and has a thin film state. It is stable and excellent in heat resistance, and can improve the light emission efficiency and power efficiency of the organic EL element, lower the practical drive voltage, lower the light emission start voltage, and increase the durability.
- FIG. 1 is a 1 H-NMR chart of the compound of Example 1 (Compound 10).
- FIG. 2 is a 1 H-NMR chart of the compound of Example 2 (Compound 18).
- FIG. The figure which shows an example of the layer structure of an organic EL element.
- the thienoindole derivative of the present invention is represented by the following general formula (1), and an aromatic tertiary amino group (—NAr 2 Ar 3 ) represented by the structural formula (2) described later on the thienoindole ring. ) Has a structure in which at least one is bonded.
- Ar 1 bonded to the nitrogen atom of the thienoindole ring represents an aromatic hydrocarbon group or an aromatic heterocyclic group.
- Such an aromatic hydrocarbon group or aromatic heterocyclic group may have a monocyclic structure or a condensed polycyclic structure.
- aromatic groups include phenyl group, biphenylyl group, terphenylyl group, naphthyl group, anthryl group, phenanthryl group, fluorenyl group, indenyl group, pyrenyl group, perylenyl group, fluoranthenyl group, triphenylenyl group, pyridyl group.
- the aromatic heterocyclic group includes a sulfur-containing aromatic heterocyclic group such as thienyl group, benzothienyl group, benzothiazolyl group, dibenzothienyl group; furyl group, benzofuranyl group, benzoxazolyl And oxygen-containing aromatic heterocyclic groups such as a dibenzofuranyl group.
- the above aromatic group may have a substituent.
- substituents 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-butyl.
- a straight-chain or branched alkyl group having 1 to 6 carbon atoms such as a 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 propyloxy group; an alkenyl group such as vinyl group or allyl group; an aryloxy group such as phenyloxy group or tolyloxy group; a benzyloxy group;
- Arylalkyloxy groups such as phenethyloxy group; phenyl group, biphenylyl group, terphenylyl group, Aromatic hydrocarbon groups such as butyl, anthracenyl, phenanthryl, fluorenyl, indenyl, pyrenyl, perylenyl, fluorant
- R 1 to R 4 are each a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, an alkyl group having 1 to 6 carbon atoms, or the number of carbon atoms.
- an alkyl group having 1 to 6 carbon atoms a cycloalkyl group having 5 to 10 carbon atoms, an alkenyl group having 2 to 6 carbon atoms, and an alkyloxy group having 1 to 6 carbon atoms
- Specific examples of the cycloalkyloxy group having 5 to 10 carbon atoms include the following.
- the above alkyl group, alkenyl group, and alkyloxy group may be linear or branched.
- An alkyl group 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 and the like.
- An alkenyl group Vinyl group, allyl group, isopropenyl group, 2-butenyl group and the like.
- An alkyloxy group Methyloxy group, ethyloxy group, n-propyloxy group, isopropyloxy group, n-butyloxy group, tert-butyloxy group, n- Pentyloxy group, n-hexyloxy group, cyclopentyloxy group and the like.
- the alkyl group, cycloalkyl group, alkenyl group, alkyloxy group and cycloalkyloxy group described above may further have a substituent.
- the substituent is the same as the substituent which the aromatic group represented by Ar 1 may have (excluding the alkyl group, arylvinyl group and acyl group).
- the aromatic hydrocarbon group and aromatic heterocyclic group in R 1 to R 4 are the same groups as the substituents exemplified for Ar 1 described above, and among the aromatic heterocyclic groups, a thienyl group, a benzothienyl group are included. Sulfur-containing aromatic heterocyclic groups such as a group, benzothiazolyl group and dibenzothienyl group are preferred.
- the aromatic hydrocarbon group and aromatic heterocyclic group represented by R 1 to R 4 may further have a substituent.
- the substituent in addition to the substituent that the aromatic group represented by Ar 1 may have, a trifluoromethyl group; an aralkyl group such as a benzyl group, a naphthylmethyl group, and a phenethyl group; a dimethylamino group; A dialkylamino group such as a diethylamino group; a disubstituted amino group substituted with an aromatic hydrocarbon group such as a diphenylamino group or a dinaphthylamino group; a diaralkylamino group such as a dibenzylamino group or a diphenethylamino group; Disubstituted amino groups substituted with aromatic heterocyclic groups such as pyridylamino groups and dithienylamino groups; Dialkenylamino groups such as diallylamino groups;
- Examples of the aryloxy group in R 1 to R 4 include phenyloxy group, biphenylyloxy group, terphenylyloxy group, naphthyloxy group, anthryloxy group, phenanthryloxy group, fluorenyloxy group, index Examples thereof include a nyloxy group, a pyrenyloxy group, and a perylenyloxy group. These aryloxy groups may also have a substituent, and examples of the substituent include the same substituents as the aromatic group represented by Ar 1 .
- R 1 to R 4 , R 1 to R 3 and the substituents thereof are bonded via a single bond, a methylene group (which may have a substituent such as a methyl group), an oxygen atom or a sulfur atom. They may combine with each other to form a ring.
- X 1 and X 2 are each a hydrogen atom, a deuterium atom, a fluorine atom, a chlorine atom, a cyano group, a nitro group, an alkyl group having 1 to 6 carbon atoms, or the number of carbon atoms
- a group A 1 is a divalent aromatic hydrocarbon group or a divalent aromatic heterocyclic group (a group formed by removing two hydrogen atoms from an aromatic hydrocarbon or an aromatic heterocyclic ring). Or represents a single bond.
- the following rings can be illustrated as specific examples of the ring structure of the aromatic hydrocarbon ring and aromatic heterocyclic ring that the above divalent group has.
- Aromatic heterocycles Pyridine, pyrimidine, triazine, pyrrole, furan, thiophene, Quinoline, isoquinoline, benzofuran, benzothiophene, indoline, carbazole, carboline, benzoxazole, benzothiazole, Quinoxaline, benzimidazole, pyrazole, dibenzofuran, dibenzothiophene, naphthyridine, phenanthroline, acridinine.
- a divalent aromatic hydrocarbon group is preferable, and a divalent aromatic hydrocarbon group having a benzene ring is particularly preferable.
- the divalent aromatic hydrocarbon group and aromatic heterocyclic group represented by A 1 may further have a substituent, and the substituent that Ar 1 described above may have as the substituent.
- the above divalent aromatic hydrocarbon group is bonded to the group Ar 2 described later via a methylene group, oxygen atom, sulfur atom or single bond which may have a substituent such as an alkyl group. May form a ring.
- those in which a divalent aromatic hydrocarbon group is bonded to the group Ar 2 to form a ring are excellent in thin film stability and exhibit particularly excellent hole transport ability.
- a typical example of such a ring is a carbazole ring.
- Ar 2 and Ar 3 represent an aromatic hydrocarbon group and an aromatic heterocyclic group.
- aromatic groups aromatic hydrocarbon groups and aromatic heterocyclic groups
- Ar 2 and Ar 3 are bonded to each other through a methylene group, an oxygen atom, a sulfur atom or a single bond, which may have a substituent such as an alkyl group, and form a ring together with the nitrogen atom of the amino group. It may be formed.
- a 1 and Ar 2 exist as groups independent of each other, when A 1 is a divalent aromatic hydrocarbon group, A 1 and Ar 2 are a single bond, a methylene group, oxygen It can also be bonded to each other via an atom or sulfur atom to form a ring.
- the thienoindole derivative of the present invention represented by the above general formula (1) has an aromatic tertiary amino structure (—NAr 2 Ar 3 ) derived from the group X 1 or X 2.
- —NAr 2 Ar 3 aromatic tertiary amino structure
- group X 2 has a structure represented by the structural formula (2) (A type)
- group X 1 is represented by the structural formula (2).
- Group (B type) and groups X 1 and X 2 both have a structure represented by structural formula (2) (C type). .
- Type A thienoindole derivatives This type of compound is represented by the following general formula (1-1). Where Ar 1 , R 1 to R 4 , X 1 , A 1 , Ar 2 and Ar 3 are as described in the general formula (1) and the structural formula (2) (provided that in X 1 , The group represented by Structural Formula (2) is excluded).
- A-type thienoindole derivatives represented by the above general formula (1-1) those represented by the following general formula (1a), that is, the 2-position of the thienoindole ring (next to the sulfur atom) In which a group having an aromatic tertiary amino structure (—NAr 2 Ar 3 ) is bonded.
- Ar 1 to Ar 3 , R 1 to R 4 , A 1 and X 1 are defined by the general formula (1-1) ).
- A-type thienoindole derivatives in which A 1 and Ar 2 are bonded to form a ring are thin films. It is particularly suitable in terms of stability and hole transport capability.
- B type thienoindole derivatives This type of compound is represented by the following general formula (1-2). Where Ar 1 , R 1 to R 4 , X 2 , A 1 , Ar 2 and Ar 3 are as described in the general formula (1) and the structural formula (2) (provided that, in X 2 , The group represented by Structural Formula (2) is excluded).
- thienoindole derivatives represented by the above general formula (1-2) a compound represented by the following general formula (1b), that is, an aromatic tertiary amino structure (- Those having a group having NAr 1 Ar 2 ) are preferred.
- Ar 1 to Ar 3 , R 1 to R 4 , A 1 and X 2 are defined by the general formula (1-2) ).
- those in which A 1 and Ar 2 are bonded to form a ring have thin film stability and hole transport ability. This is particularly preferable.
- both of the groups X 1 and X 2 are groups represented by the structural formula (2) (groups having an aromatic tertiary amino structure). ).
- Ar 1 to Ar 3 , R 1 to R 4 and A 1 are as described in the general formula (1) and the structural formula (2).
- the plurality of A 1 , Ar 2 , and Ar 3 may be the same or different.
- the group having an aromatic tertiary amino structure (—NAr 2 Ar 3 ) is the 2-position of the thienoindole ring.
- a carbon atom adjacent to the sulfur atom and a structure bonded to the 7-position specifically, a thienoindole derivative represented by the following general formula (1c) is preferable.
- Ar 1 to Ar 3 , R 1 to R 4 and A 1 are as described in the general formula (1-3).
- those in which A 1 and Ar 2 are bonded to form a ring are thin film stability and hole transport capability. And is particularly suitable.
- the thienoindole derivative of the present invention is a novel compound and can be synthesized, for example, as follows. First, a thienoindole having an aryl group introduced into the 4-position nitrogen atom and having groups R 1 to R 4 corresponding to the general formula (1) is used as a starting material, and this thienoindole is converted to bromine or N-bromo. was brominated by like succinimide, to synthesize a bromo substituted compound of bromine is introduced into a predetermined position (a position to be bonded to the group X1 or X 2).
- a bromo substituted compound of bromine is introduced into a predetermined position (a position to be bonded to the group X1 or X 2).
- a predetermined position a position to be bonded to the group X1 or X 2
- boronic acids or boronic esters synthesized by the reaction of halogen-substituted triarylamines with pinacolborane, bis (pinacolato) diboron, etc. (for example, J. Org. Chem., 60, 7508 (1995)).
- boronic acid or boronic ester By subjecting this boronic acid or boronic ester to a bromo-substituted thienoindole as described above, a cross-coupling reaction such as Suzuki coupling (see, for example, Chem. Rev., 95, 2457 (1995)).
- Suzuki coupling see, for example, Chem. Rev., 95, 2457 (1995)
- a boronic acid or a boronic acid ester corresponding to the thienoindole derivative of the general formula (1) is synthesized.
- the thienoindole derivative of the present invention can also be synthesized by reacting boronic acid or a boronic acid ester with a halogen-substituted product of triarylamine by a cross-coupling reaction such as Suzuki coupling.
- these compounds can be purified by column chromatography, adsorption purification using silica gel, activated carbon, activated clay, etc., recrystallization using a solvent, crystallization methods, and the like.
- the compound is identified by NMR analysis.
- thienoindole derivatives Specific examples of preferable compounds among the thienoindole derivatives represented by the general formula (1) described above are shown below, but the present invention is not limited to these compounds.
- the above-described thienoindole derivative of the present invention has a glass transition point (Tg) and a melting point higher than those of conventionally known hole transport materials, can form a thin film excellent in heat resistance, and stably maintains the thin film state. be able to.
- the electron blocking ability is high.
- the A type exhibits the most excellent performance as a material for an organic EL device.
- the organic EL element provided with the organic layer formed using the thienoindole derivative of the present invention described above has a structure shown in FIG. 3, for example. That is, a transparent anode 2, a hole injection layer 3, a hole transport layer 4, a light emitting layer 5, an electron transport layer 6, an electron injection layer on a glass substrate 1 (a transparent substrate such as a transparent resin substrate may be used). 7 and a cathode 8 are provided.
- the organic EL element to which the thienoindole derivative of the present invention is applied is not limited to the above layer structure, and an electron blocking layer or a light emitting layer 5 is provided between the hole transport layer 4 and the light emitting layer 5.
- a hole blocking layer or the like can be provided between the electron transport layer 6 and the electron transport layer 6. Further, a simple layer structure in which the electron injection layer 7 and the hole injection layer 3 are omitted can be obtained. For example, in the above multilayer structure, some layers can be omitted. For example, a simple layer structure in which the anode 2, the hole transport layer 3, the light emitting layer 5, the electron transport layer 6, and the cathode 8 are provided on the substrate 1 can be used.
- the thienoindole derivative of the present invention has an organic layer (for example, a hole injection layer 3, a hole transport layer 4, an electron blocking layer not shown, or a light emitting layer) provided between the anode 2 and the cathode 8. It is suitably used as a forming material of 5).
- an organic layer for example, a hole injection layer 3, a hole transport layer 4, an electron blocking layer not shown, or a light emitting layer
- the transparent anode 2 may be formed of a known electrode material, and an electrode material having a large work function such as ITO or gold is formed on the substrate 1 (transparent substrate such as a glass substrate). It is formed by vapor deposition.
- the hole injection layer 3 provided on the transparent anode 2 can be formed using the above-described thienoindole derivative of the present invention, or may be formed using a conventionally known material, for example, the following materials. it can. Porphyrin compounds represented by copper phthalocyanine; Starburst type triphenylamine derivatives; Materials such as various triphenylamine tetramers; Acceptor heterocyclic compounds such as hexacyanoazatriphenylene; Coating type polymer materials such as poly (3,4-ethylenedioxythiophene) (PEDOT), poly (styrene sulfonate) (PSS) and the like.
- PEDOT poly (3,4-ethylenedioxythiophene)
- PSS poly (styrene sulfonate)
- the layer (thin film) using the above materials can be formed by a known method such as a spin coating method or an ink jet method in addition to the vapor deposition method.
- the hole transport layer 4 provided on the hole injection layer 3 can also be formed by using the above-described thienoindole derivative of the present invention, and a conventionally known hole transport material as described below. It can also be formed using.
- Benzidine derivatives such as N, N′-diphenyl-N, N′-di (m-tolyl) benzidine (hereinafter abbreviated as TPD); N, N′-diphenyl-N, N′-di ( ⁇ -naphthyl) benzidine (hereinafter abbreviated as NPD); N, N, N ′, N′-tetrabiphenylylbenzidine; Amine-based derivative 1,1-bis [4- (di-4-tolylamino) phenyl] cyclohexane (hereinafter abbreviated as TAPC); Various triphenylamine trimers and tetramers; The above-mentioned coating type polymer material that is also used as a
- Such a compound for the hole transport layer may be formed by itself, but may be formed by mixing two or more kinds.
- a multilayer film in which a plurality of layers are formed using one or more of the above-described compounds and such layers are stacked can be used as a hole transport layer.
- a positive hole injection / transport layer can be formed by coating using polymeric materials, such as PEDOT. it can.
- the hole transport layer 4 (the same applies to the hole injection layer 3), it is possible to use a material which is usually used for the layer and further P-doped with trisbromophenylamine hexachloroantimony or the like. Further, the hole transport layer 4 (or the hole injection layer 3) can be formed using a polymer compound having a TPD basic skeleton.
- an electron blocking layer (not shown) (which can be provided between the light emitting layer 5 and the hole transport layer 3) can be formed using the thienoindole derivative of the present invention having an electron blocking action. Also, it can be formed using a known electron blocking compound such as a carbazole derivative or a compound having a triphenylsilyl group and a triarylamine structure. Specific examples of the compound having a carbazole derivative and a triarylamine structure are as follows.
- TCTA 9,9-bis [4- (carbazol-9-yl) phenyl] Fluorene
- mCP 1,3-bis (carbazol-9-yl) benzene
- Ad-Cz 2,2-bis (4-carbazol-9-ylphenyl) adamantane
- the electron blocking layer is formed by using one or more of the thienoindole compounds of the present invention and the above-mentioned known hole transport materials alone, or one or more of these hole transport materials. It is also possible to form a plurality of layers by using a multilayer film in which such layers are stacked as an electron blocking layer.
- the light-emitting layer 5 of the organic EL element in addition to metal complexes of quinolinol derivatives such as Alq 3 , various metal complexes such as zinc, beryllium, and aluminum, anthracene derivatives, bisstyrylbenzene derivatives, pyrene derivatives, oxazole derivatives, poly A light-emitting material such as a paraphenylene vinylene derivative can be used.
- the light emitting layer 5 can also be comprised with a host material and a dopant material.
- a host material in this case, a thiazole derivative, a benzimidazole derivative, a polydialkylfluorene derivative, or the like can be used in addition to the above light-emitting material, in addition to the thienoindole derivative of the present invention.
- the dopant material quinacridone, coumarin, rubrene, perylene and derivatives thereof, benzopyran derivatives, rhodamine derivatives, aminostyryl derivatives, and the like can be used.
- Such a light-emitting layer 5 can also have a single-layer configuration using one or more of the light-emitting materials, or a multilayer structure in which a plurality of layers are stacked.
- the light emitting layer 5 can also be formed using a phosphorescent light emitting material as the light emitting material.
- a phosphorescent material a phosphorescent material of a metal complex such as iridium or platinum can be used.
- 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)
- the material is used by doping into a hole injecting / transporting host material or an electron transporting host material.
- Examples of the hole injection / transport host material include thienoindole derivatives of the present invention, carbazole derivatives such as 4,4′-di (N-carbazolyl) biphenyl (hereinafter abbreviated as CBP), TCTA, and mCP. Can be used.
- CBP 4,4′-di (N-carbazolyl) biphenyl
- TCTA 4,4′-di (N-carbazolyl) biphenyl
- mCP mCP.
- UGH2 p-bis (triphenylsilyl) benzene
- TPBI 1-phenyl-1H-benzimidazole
- the host material with a phosphorescent light emitting material by co-evaporation in the range of 1 to 30 weight percent with respect to the entire light emitting layer in order to avoid concentration quenching.
- Non-Patent Document 1 a material that emits delayed fluorescence, such as a CDCB derivative (for example, PIC-TRZ, CC2TA, PXZ-TRZ, 4CzIPN) as disclosed in Non-Patent Document 1 described above, can be used as the light emitting material. is there.
- a CDCB derivative for example, PIC-TRZ, CC2TA, PXZ-TRZ, 4CzIPN
- the hole blocking layer (not shown in FIG. 3) that can be provided between the light emitting layer 5 and the electron transport layer 6 can be formed using a compound having a known hole blocking action.
- known compounds having such hole blocking action include phenanthroline derivatives such as bathocuproin (hereinafter abbreviated as BCP), aluminum (III) bis (2-methyl-8-quinolinato) -4-phenylphenol
- BCP bathocuproin
- BAlq metal complexes of quinolinol derivatives
- various rare earth complexes, triazole derivatives, triazine derivatives, oxadiazole derivatives, and the like can be given.
- These materials can also be used for forming the electron transport layer 6 described below, and the hole blocking layer and the electron transport layer 6 can be used in combination.
- Such a hole blocking layer can also have a single layer or multilayer structure, and each layer is formed using one or more of the compounds having the hole blocking action described above.
- the electron transport layer 6 is an electron transport compound known per se, for example, metal complexes of quinolinol derivatives including Alq 3 and BAlq, various metal complexes, triazole derivatives, triazine derivatives, oxadiazole derivatives, thiadiazole Derivatives, carbodiimide derivatives, quinoxaline derivatives, phenanthroline derivatives, silole derivatives and the like are used.
- the electron transport layer 6 can also have a single layer or multilayer structure, and each layer is formed using one or more of the electron transport compounds described above.
- the electron injection layer 7 is also known per se, for example, an alkali metal salt such as lithium fluoride or cesium fluoride, an alkaline earth metal salt such as magnesium fluoride, or a metal oxide such as aluminum oxide. Can be formed.
- an alkali metal salt such as lithium fluoride or 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.
- the organic EL device in which at least one of the organic layers (for example, the hole injection layer 3, the hole transport layer 4, the electron blocking layer or the light emitting layer 5) is formed using the thienoindole derivative of the present invention has a luminous efficiency and It has high power efficiency, low practical driving voltage, low light emission starting voltage, and extremely excellent durability.
- the organic layer was collected by allowing to cool to room temperature and performing a liquid separation operation, followed by dehydration with anhydrous magnesium sulfate and concentration under reduced pressure to obtain a crude product.
- the crude product was purified by column chromatography (carrier: silica gel, eluent: heptane / toluene) and then repeated crystallization using a mixed solvent of toluene / methanol to give 3- ⁇ 4- (9,9- 15.3 g (yield 76%) of yellowish white powder of dimethyl-9H-fluoren-2-yl) thieno [3,2-b] indol-2-yl ⁇ -9-phenylcarbazole (Compound 18) was obtained. .
- Example 3> Measurement of glass transition temperature
- the melting point and glass transition point were determined with a high-sensitivity differential scanning calorimeter (manufactured by Bruker AXS, DSC3100S). The results were as follows. Melting point Glass transition point Compound of Example 1 264 ° C 130 ° C Compound of Example 2 242 ° C 129 ° C From this, the thienoindole derivative has a glass transition point of 100 ° C. or higher, which indicates that the thin film state is stable.
- Example 4 Using the thienoindole derivative obtained in Examples 1 and 2, a deposited film having a film thickness of 100 nm was prepared on an ITO substrate, and the work was performed with an ionization potential measuring apparatus (Sumitomo Heavy Industries, Ltd., PYS-202). The function was measured. Work function Compound of Example 1 5.55 eV Compound of Example 2 5.72 eV From the above results, the thienoindole derivative of the present invention shows a favorable energy level as compared with a work function of 5.54 eV possessed by general hole transport materials such as NPD and TPD. It can be seen that it has a hole transport capability.
- Example 5 (Characteristic evaluation of organic EL elements) An organic EL device having the structure shown in FIG. 3 was prepared, comprising a hole transport layer formed using the thienoindole derivative (Compound 10) obtained in Example 1.
- the glass substrate 1 on which ITO having a thickness of 150 nm was formed was washed with an organic solvent, and then the surface was washed by oxygen plasma treatment. Thereafter, the glass substrate with the ITO electrode is mounted in a vacuum vapor deposition machine, and the pressure is reduced to 0.001 Pa or less. In this state, a hole having a thickness of 20 nm is injected so as to cover the transparent anode 2 using the compound 63 having the following structural formula. Layer 3 was formed.
- the thienoindole derivative (compound 10) obtained in Example 1 was deposited to form a hole transport layer 4 having a thickness of 40 nm.
- a 30 nm light emitting layer 5 was formed.
- Alq 3 was used to form an electron transport layer 6 having a thickness of 30 nm on the light emitting layer 5. Further, lithium fluoride was used to form an electron injection layer 7 having a thickness of 0.5 nm on the electron transport layer 6. Finally, aluminum was vapor-deposited to a thickness of 150 nm to form the cathode 8 to obtain an organic EL element having the structure shown in FIG.
- Table 1 summarizes the measurement results of the light emission characteristics of the organic EL device produced as described above when a DC voltage was applied in the atmosphere at room temperature.
- Example 3 ⁇ Comparative Example 3> Instead of the thienoindole derivative of Example 1 (Compound 10), an organic EL device was produced in the same manner as in Example 5 except that the hole transport layer 4 having a film thickness of 40 nm was formed using a compound 66 having the following structural formula. The device was fabricated, and the obtained organic EL device was measured for light emission characteristics in the same manner as in Example 5. The results are also shown in Table 1.
- the driving voltage when a current density of 10 mA / cm 2 was passed was 5.18 V for an organic EL element using Compound A and 5.62 V for an organic EL element using Compound B.
- the organic EL device using the compound of Example 1 has a low voltage of 4.78 V.
- the organic EL element using Compound A is 5.20 lm / W
- the organic EL element using Compound B is 5.06 lm / W
- the organic EL element using Compound 66 is 5.06 lm / W.
- the organic EL device using the compound of Example 1 (Compound 10) was greatly improved to 6.06 lm / W.
- the organic EL device using the thienoindole derivative of the present invention is more efficient than the organic EL devices using the compounds A and B and the compound 66, which are known materials.
- the organic EL devices using the compounds A and B and the compound 66 which are known materials.
- the organic EL device using the compounds A and B and the compound 66 has a higher emission starting voltage than the organic EL device using the thienoindole derivative (compound 10) of the present invention.
- the compound having a thienoindole derivative of the present invention is excellent as a compound for an organic EL device because it has a high hole transport capability, an excellent electron blocking capability, and a stable thin film state.
- an organic EL device using the compound, high luminous efficiency and power efficiency can be obtained, practical driving voltage can be lowered, and durability can be improved. For example, it has become possible to develop home appliances and lighting.
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Abstract
L'invention concerne un dérivé thiéno-indole représenté par la formule générale (1). Dans la formule générale (1), Ar1 représente un groupe hydrocarboné aromatique, au moins l'un parmi X1 et X2 représente un groupe ayant une structure amino tertiaire aromatique et les autres groupes peuvent représenter des atomes d'hydrogène. Ce composé a, en connexion avec une structure amino tertiaire aromatique étant introduite dans la structure de noyau thiéno-indole, (A) des bonnes caractéristiques d'injection de trous, (B) une mobilité de trous élevée, (C) une excellente capacité de blocage d'électrons, (D) un état de film mince stable et (E) une excellente résistance thermique ; et est utile comme matière de transport de trous à utiliser dans des éléments électroluminescents organiques.
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JP2010205982A (ja) * | 2009-03-04 | 2010-09-16 | Mitsui Chemicals Inc | 有機トランジスタ |
JP2010205815A (ja) * | 2009-03-02 | 2010-09-16 | Konica Minolta Holdings Inc | 有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子、表示装置及び照明装置 |
JP2010270084A (ja) * | 2009-05-25 | 2010-12-02 | Idemitsu Kosan Co Ltd | インドール誘導体及びそれを用いた有機薄膜太陽電池 |
WO2012035934A1 (fr) * | 2010-09-13 | 2012-03-22 | 新日鐵化学株式会社 | Élément électroluminescent organique |
KR20120081539A (ko) * | 2011-01-11 | 2012-07-19 | (주)씨에스엘쏠라 | 유기발광화합물 및 이를 이용한 유기 광소자 |
WO2012115394A2 (fr) * | 2011-02-24 | 2012-08-30 | 덕산하이메탈(주) | Composé, dispositif électronique organique utilisant celui-ci et dispositif électronique associé |
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JP2010205815A (ja) * | 2009-03-02 | 2010-09-16 | Konica Minolta Holdings Inc | 有機エレクトロルミネッセンス素子材料、有機エレクトロルミネッセンス素子、表示装置及び照明装置 |
JP2010205982A (ja) * | 2009-03-04 | 2010-09-16 | Mitsui Chemicals Inc | 有機トランジスタ |
JP2010270084A (ja) * | 2009-05-25 | 2010-12-02 | Idemitsu Kosan Co Ltd | インドール誘導体及びそれを用いた有機薄膜太陽電池 |
WO2012035934A1 (fr) * | 2010-09-13 | 2012-03-22 | 新日鐵化学株式会社 | Élément électroluminescent organique |
KR20120081539A (ko) * | 2011-01-11 | 2012-07-19 | (주)씨에스엘쏠라 | 유기발광화합물 및 이를 이용한 유기 광소자 |
WO2012115394A2 (fr) * | 2011-02-24 | 2012-08-30 | 덕산하이메탈(주) | Composé, dispositif électronique organique utilisant celui-ci et dispositif électronique associé |
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US10388888B2 (en) | 2014-12-29 | 2019-08-20 | University Court Of The University Of St Andrews | Light emitting electrochemical cells and compounds |
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