CN115353532B - Metal complex and application thereof in photoelectric device - Google Patents
Metal complex and application thereof in photoelectric device Download PDFInfo
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- CN115353532B CN115353532B CN202211159191.7A CN202211159191A CN115353532B CN 115353532 B CN115353532 B CN 115353532B CN 202211159191 A CN202211159191 A CN 202211159191A CN 115353532 B CN115353532 B CN 115353532B
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- 150000004696 coordination complex Chemical class 0.000 title claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 92
- 150000001875 compounds Chemical class 0.000 claims description 49
- 239000000203 mixture Substances 0.000 claims description 35
- 125000004432 carbon atom Chemical group C* 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 29
- 239000007924 injection Substances 0.000 claims description 29
- 125000000217 alkyl group Chemical group 0.000 claims description 27
- 230000000903 blocking effect Effects 0.000 claims description 19
- 125000004429 atom Chemical group 0.000 claims description 17
- 239000002346 layers by function Substances 0.000 claims description 15
- 230000005525 hole transport Effects 0.000 claims description 14
- 239000003960 organic solvent Substances 0.000 claims description 14
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- -1 iridium metal complex Chemical class 0.000 abstract description 100
- 229910052741 iridium Inorganic materials 0.000 abstract description 5
- FZICDBOJOMQACG-UHFFFAOYSA-N benzo[h]isoquinoline Chemical group C1=NC=C2C3=CC=CC=C3C=CC2=C1 FZICDBOJOMQACG-UHFFFAOYSA-N 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 81
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 58
- 125000006413 ring segment Chemical group 0.000 description 47
- 238000006243 chemical reaction Methods 0.000 description 41
- 125000003118 aryl group Chemical group 0.000 description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 34
- 230000015572 biosynthetic process Effects 0.000 description 31
- 238000003786 synthesis reaction Methods 0.000 description 31
- 125000001072 heteroaryl group Chemical group 0.000 description 26
- 238000005086 pumping Methods 0.000 description 23
- 239000002904 solvent Substances 0.000 description 23
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 21
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 20
- 229910052757 nitrogen Inorganic materials 0.000 description 20
- 238000010438 heat treatment Methods 0.000 description 19
- 238000005303 weighing Methods 0.000 description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- 239000004698 Polyethylene Substances 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 125000001424 substituent group Chemical group 0.000 description 16
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 15
- 239000000243 solution Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 13
- 239000012043 crude product Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000003480 eluent Substances 0.000 description 11
- 239000000976 ink Substances 0.000 description 11
- 229910001873 dinitrogen Inorganic materials 0.000 description 10
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 10
- 239000003208 petroleum Substances 0.000 description 10
- 238000007639 printing Methods 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
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- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 9
- 125000004093 cyano group Chemical group *C#N 0.000 description 9
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- ABRVLXLNVJHDRQ-UHFFFAOYSA-N [2-pyridin-3-yl-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound FC(C1=CC(=CC(=N1)C=1C=NC=CC=1)CN)(F)F ABRVLXLNVJHDRQ-UHFFFAOYSA-N 0.000 description 7
- 238000004821 distillation Methods 0.000 description 7
- 125000002462 isocyano group Chemical group *[N+]#[C-] 0.000 description 7
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 7
- 125000006165 cyclic alkyl group Chemical group 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 5
- 238000004440 column chromatography Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 239000012065 filter cake Substances 0.000 description 5
- 125000000623 heterocyclic group Chemical group 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 125000004433 nitrogen atom Chemical group N* 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- QRUBYZBWAOOHSV-UHFFFAOYSA-M silver trifluoromethanesulfonate Chemical compound [Ag+].[O-]S(=O)(=O)C(F)(F)F QRUBYZBWAOOHSV-UHFFFAOYSA-M 0.000 description 5
- MJRFDVWKTFJAPF-UHFFFAOYSA-K trichloroiridium;hydrate Chemical compound O.Cl[Ir](Cl)Cl MJRFDVWKTFJAPF-UHFFFAOYSA-K 0.000 description 5
- IMRWILPUOVGIMU-UHFFFAOYSA-N 2-bromopyridine Chemical compound BrC1=CC=CC=N1 IMRWILPUOVGIMU-UHFFFAOYSA-N 0.000 description 4
- XFJBGINZIMNZBW-CRAIPNDOSA-N 5-chloro-2-[4-[(1r,2s)-2-[2-(5-methylsulfonylpyridin-2-yl)oxyethyl]cyclopropyl]piperidin-1-yl]pyrimidine Chemical compound N1=CC(S(=O)(=O)C)=CC=C1OCC[C@H]1[C@@H](C2CCN(CC2)C=2N=CC(Cl)=CN=2)C1 XFJBGINZIMNZBW-CRAIPNDOSA-N 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 4
- 125000005161 aryl oxy carbonyl group Chemical group 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 125000002485 formyl group Chemical group [H]C(*)=O 0.000 description 4
- 125000005067 haloformyl group Chemical group 0.000 description 4
- 238000004770 highest occupied molecular orbital Methods 0.000 description 4
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 4
- 238000007641 inkjet printing Methods 0.000 description 4
- 238000002386 leaching Methods 0.000 description 4
- 239000012074 organic phase Substances 0.000 description 4
- 125000004430 oxygen atom Chemical group O* 0.000 description 4
- HFPZCAJZSCWRBC-UHFFFAOYSA-N p-cymene Chemical compound CC(C)C1=CC=C(C)C=C1 HFPZCAJZSCWRBC-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
- 239000002994 raw material Substances 0.000 description 4
- 125000000876 trifluoromethoxy group Chemical group FC(F)(F)O* 0.000 description 4
- GHYOCDFICYLMRF-UTIIJYGPSA-N (2S,3R)-N-[(2S)-3-(cyclopenten-1-yl)-1-[(2R)-2-methyloxiran-2-yl]-1-oxopropan-2-yl]-3-hydroxy-3-(4-methoxyphenyl)-2-[[(2S)-2-[(2-morpholin-4-ylacetyl)amino]propanoyl]amino]propanamide Chemical compound C1(=CCCC1)C[C@@H](C(=O)[C@@]1(OC1)C)NC([C@H]([C@@H](C1=CC=C(C=C1)OC)O)NC([C@H](C)NC(CN1CCOCC1)=O)=O)=O GHYOCDFICYLMRF-UTIIJYGPSA-N 0.000 description 3
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical compound ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YSUIQYOGTINQIN-UZFYAQMZSA-N 2-amino-9-[(1S,6R,8R,9S,10R,15R,17R,18R)-8-(6-aminopurin-9-yl)-9,18-difluoro-3,12-dihydroxy-3,12-bis(sulfanylidene)-2,4,7,11,13,16-hexaoxa-3lambda5,12lambda5-diphosphatricyclo[13.2.1.06,10]octadecan-17-yl]-1H-purin-6-one Chemical compound NC1=NC2=C(N=CN2[C@@H]2O[C@@H]3COP(S)(=O)O[C@@H]4[C@@H](COP(S)(=O)O[C@@H]2[C@@H]3F)O[C@H]([C@H]4F)N2C=NC3=C2N=CN=C3N)C(=O)N1 YSUIQYOGTINQIN-UZFYAQMZSA-N 0.000 description 3
- WYFCZWSWFGJODV-MIANJLSGSA-N 4-[[(1s)-2-[(e)-3-[3-chloro-2-fluoro-6-(tetrazol-1-yl)phenyl]prop-2-enoyl]-5-(4-methyl-2-oxopiperazin-1-yl)-3,4-dihydro-1h-isoquinoline-1-carbonyl]amino]benzoic acid Chemical compound O=C1CN(C)CCN1C1=CC=CC2=C1CCN(C(=O)\C=C\C=1C(=CC=C(Cl)C=1F)N1N=NN=C1)[C@@H]2C(=O)NC1=CC=C(C(O)=O)C=C1 WYFCZWSWFGJODV-MIANJLSGSA-N 0.000 description 3
- RSIWALKZYXPAGW-NSHDSACASA-N 6-(3-fluorophenyl)-3-methyl-7-[(1s)-1-(7h-purin-6-ylamino)ethyl]-[1,3]thiazolo[3,2-a]pyrimidin-5-one Chemical compound C=1([C@@H](NC=2C=3N=CNC=3N=CN=2)C)N=C2SC=C(C)N2C(=O)C=1C1=CC=CC(F)=C1 RSIWALKZYXPAGW-NSHDSACASA-N 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 125000003277 amino group Chemical group 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 239000010405 anode material Substances 0.000 description 3
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- 238000009835 boiling Methods 0.000 description 3
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- 238000012512 characterization method Methods 0.000 description 3
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- 230000005669 field effect Effects 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- MILUBEOXRNEUHS-UHFFFAOYSA-N iridium(3+) Chemical compound [Ir+3] MILUBEOXRNEUHS-UHFFFAOYSA-N 0.000 description 3
- 150000002540 isothiocyanates Chemical class 0.000 description 3
- 239000005453 ketone based solvent Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 125000006574 non-aromatic ring group Chemical group 0.000 description 3
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- NNWHUJCUHAELCL-SNAWJCMRSA-N trans-isomethyleugenol Chemical compound COC1=CC=C(\C=C\C)C=C1OC NNWHUJCUHAELCL-SNAWJCMRSA-N 0.000 description 3
- BFIMMTCNYPIMRN-UHFFFAOYSA-N 1,2,3,5-tetramethylbenzene Chemical compound CC1=CC(C)=C(C)C(C)=C1 BFIMMTCNYPIMRN-UHFFFAOYSA-N 0.000 description 2
- AGIQIOSHSMJYJP-UHFFFAOYSA-N 1,2,4-Trimethoxybenzene Chemical compound COC1=CC=C(OC)C(OC)=C1 AGIQIOSHSMJYJP-UHFFFAOYSA-N 0.000 description 2
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- ZEEBGORNQSEQBE-UHFFFAOYSA-N [2-(3-phenylphenoxy)-6-(trifluoromethyl)pyridin-4-yl]methanamine Chemical compound C1(=CC(=CC=C1)OC1=NC(=CC(=C1)CN)C(F)(F)F)C1=CC=CC=C1 ZEEBGORNQSEQBE-UHFFFAOYSA-N 0.000 description 2
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- WZJYKHNJTSNBHV-UHFFFAOYSA-N benzo[h]quinoline Chemical compound C1=CN=C2C3=CC=CC=C3C=CC2=C1 WZJYKHNJTSNBHV-UHFFFAOYSA-N 0.000 description 2
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- OCKPCBLVNKHBMX-UHFFFAOYSA-N butylbenzene Chemical compound CCCCC1=CC=CC=C1 OCKPCBLVNKHBMX-UHFFFAOYSA-N 0.000 description 2
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 description 2
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- HHNHBFLGXIUXCM-GFCCVEGCSA-N cyclohexylbenzene Chemical compound [CH]1CCCC[C@@H]1C1=CC=CC=C1 HHNHBFLGXIUXCM-GFCCVEGCSA-N 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- ZAJNGDIORYACQU-UHFFFAOYSA-N decan-2-one Chemical compound CCCCCCCCC(C)=O ZAJNGDIORYACQU-UHFFFAOYSA-N 0.000 description 2
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- 125000004494 ethyl ester group Chemical group 0.000 description 1
- 238000007647 flexography Methods 0.000 description 1
- 150000002219 fluoranthenes Chemical class 0.000 description 1
- YLQWCDOCJODRMT-UHFFFAOYSA-N fluoren-9-one Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C2=C1 YLQWCDOCJODRMT-UHFFFAOYSA-N 0.000 description 1
- RMBPEFMHABBEKP-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2C3=C[CH]C=CC3=CC2=C1 RMBPEFMHABBEKP-UHFFFAOYSA-N 0.000 description 1
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 1
- 150000002240 furans Chemical class 0.000 description 1
- 125000002541 furyl group Chemical group 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002883 imidazolyl group Chemical group 0.000 description 1
- 125000001041 indolyl group Chemical group 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- UEEXRMUCXBPYOV-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1.C1=CC=CC=C1C1=CC=CC=N1 UEEXRMUCXBPYOV-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 229940100554 isononyl isononanoate Drugs 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000002183 isoquinolinyl group Chemical group C1(=NC=CC2=CC=CC=C12)* 0.000 description 1
- ZBKFYXZXZJPWNQ-UHFFFAOYSA-N isothiocyanate group Chemical group [N-]=C=S ZBKFYXZXZJPWNQ-UHFFFAOYSA-N 0.000 description 1
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- 238000007644 letterpress printing Methods 0.000 description 1
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- FSPSELPMWGWDRY-UHFFFAOYSA-N m-Methylacetophenone Chemical compound CC(=O)C1=CC=CC(C)=C1 FSPSELPMWGWDRY-UHFFFAOYSA-N 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000002950 monocyclic group Chemical group 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- DYFFAVRFJWYYQO-UHFFFAOYSA-N n-methyl-n-phenylaniline Chemical compound C=1C=CC=CC=1N(C)C1=CC=CC=C1 DYFFAVRFJWYYQO-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 150000002790 naphthalenes Chemical class 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- YCBSHDKATAPNIA-UHFFFAOYSA-N non-3-ene Chemical compound CCCCCC=CCC YCBSHDKATAPNIA-UHFFFAOYSA-N 0.000 description 1
- KPADFPAILITQBG-UHFFFAOYSA-N non-4-ene Chemical compound CCCCC=CCCC KPADFPAILITQBG-UHFFFAOYSA-N 0.000 description 1
- 229940078552 o-xylene Drugs 0.000 description 1
- KSCKTBJJRVPGKM-UHFFFAOYSA-N octan-1-olate;titanium(4+) Chemical compound [Ti+4].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-].CCCCCCCC[O-] KSCKTBJJRVPGKM-UHFFFAOYSA-N 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 229960003540 oxyquinoline Drugs 0.000 description 1
- 238000007649 pad printing Methods 0.000 description 1
- 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 1
- 235000012736 patent blue V Nutrition 0.000 description 1
- 150000002964 pentacenes Chemical class 0.000 description 1
- FVDOBFPYBSDRKH-UHFFFAOYSA-N perylene-3,4,9,10-tetracarboxylic acid Chemical compound C=12C3=CC=C(C(O)=O)C2=C(C(O)=O)C=CC=1C1=CC=C(C(O)=O)C2=C1C3=CC=C2C(=O)O FVDOBFPYBSDRKH-UHFFFAOYSA-N 0.000 description 1
- 150000002987 phenanthrenes Chemical class 0.000 description 1
- 125000004934 phenanthridinyl group Chemical group C1(=CC=CC2=NC=C3C=CC=CC3=C12)* 0.000 description 1
- 150000005041 phenanthrolines Chemical class 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- MTZWHHIREPJPTG-UHFFFAOYSA-N phorone Chemical compound CC(C)=CC(=O)C=C(C)C MTZWHHIREPJPTG-UHFFFAOYSA-N 0.000 description 1
- 229930193351 phorone Natural products 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 210000002706 plastid Anatomy 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- KRIOVPPHQSLHCZ-UHFFFAOYSA-N propiophenone Chemical compound CCC(=O)C1=CC=CC=C1 KRIOVPPHQSLHCZ-UHFFFAOYSA-N 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 150000003220 pyrenes Chemical class 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- 125000002098 pyridazinyl group Chemical group 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 description 1
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010020 roller printing Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000007764 slot die coating Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 150000003440 styrenes Chemical class 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229940042055 systemic antimycotics triazole derivative Drugs 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
- 125000001935 tetracenyl group Chemical group C1(=CC=CC2=CC3=CC4=CC=CC=C4C=C3C=C12)* 0.000 description 1
- IBBLKSWSCDAPIF-UHFFFAOYSA-N thiopyran Chemical compound S1C=CC=C=C1 IBBLKSWSCDAPIF-UHFFFAOYSA-N 0.000 description 1
- RUVINXPYWBROJD-ONEGZZNKSA-N trans-anethole Chemical compound COC1=CC=C(\C=C\C)C=C1 RUVINXPYWBROJD-ONEGZZNKSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 125000003960 triphenylenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3C3=CC=CC=C3C12)* 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0033—Iridium compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to a metal complex and application thereof in photoelectric devices. The iridium metal complex provided by the invention contains a benzisoquinoline group in the structure, and when the iridium metal complex is used as a guest material in a light-emitting layer of an organic electronic device, the light-emitting efficiency of the device can be improved, and the service life of the device can be prolonged.
Description
Technical Field
The invention relates to the field of organic photoelectric materials, in particular to a metal complex and application thereof in photoelectric devices.
Background
Organic Light Emitting Diodes (OLEDs), which are carrier double injection type light emitting devices, are also known as organic electroluminescent devices. At a certain driving voltage, electrons are injected from the cathode, holes are injected from the anode, and then both meet at the organic light emitting layer and recombine to form excitons (i.e., hole-electron pairs). The excitons release energy, return to the ground state in the form of a radiative transition, and fluoresce or phosphorescence. In order to increase the luminous efficiency of organic light emitting diodes, various fluorescent and phosphorescent based luminescent material systems have been developed. The organic light emitting diode using the fluorescent material has high reliability, but the internal electroluminescent quantum efficiency thereof is limited to 25% under the excitation of an electric field. In contrast, since the branching ratio of the singlet excited state and the triplet excited state of excitons is 1:3, the organic light emitting diode using the phosphorescent material can achieve almost 100% internal light emission quantum efficiency. The existing luminescent layer material mostly adopts a host-guest doping mode, and a metal complex is formed by doping heavy metal centers, so that spin orbit coupling can be improved, intersystem crossing is easy to occur under electric field excitation, and triplet excitation is effectively obtained.
Complexes based on iridium (III) are a class of materials widely used in high efficiency OLEDs, with higher efficiency and stability. Baldo et al report high quantum efficiency OLEDs using fac-tris (2-phenylpyridine) iridium (III) [ Ir (ppy) 3 ] as the phosphorescent light-emitting material, 4'-N, N' -dicarbazole-biphenyl (4, 4'-N, N' -diarbazole-biphenyl) (CBP) as the host material (appl. Phys. Lett.1999,75,4). Sky blue complex iridium (III) bis [2- (4 ',6' -difluorophenyl) pyridine-N, C2] -picolinate (FIrpic) is another well known phosphorescent dopant material that exhibits extremely high photoluminescence quantum efficiencies of about 60% in solution and almost 100% in solid films when doped into high triplet energy matrices (appl. Phys. Lett.2001,79,2082). Although iridium (III) systems based on 2-phenylpyridine and its derivatives have been used in large amounts for the preparation of OLEDs, device performance, especially lifetime, still needs to be improved.
Disclosure of Invention
The invention aims to provide a novel iridium-based metal complex which is used as a guest material in a light-emitting layer of an organic electronic device, and the service life of the device is prolonged.
In order to achieve the purpose of the invention, the technical solution provided is as follows:
A metal complex, which is shown in a general formula (I):
Wherein:
L is independently selected from monovalent anionic organic ligands for each occurrence;
m is selected from 1, 2 or 3;
X is independently selected from CR 2 or N for each occurrence;
each occurrence of R 1、R2 is independently selected from: -H, -D, a linear alkyl group having 1 to 10C atoms, a branched or cyclic alkyl group having 3 to 10C atoms, a silyl group, a cyano group, an isocyano group, a hydroxyl group, a nitro group, an amine group, -CF 3, -Cl, -Br, -F, -I, a substituted or unsubstituted aromatic group having 6 to 30 ring atoms, a substituted or unsubstituted heteroaromatic group having 6 to 30 ring atoms, or a combination of these groups;
n is selected from 0,1, 2,3, 4, 5, 6 or 7.
Further, the present invention provides a mixture comprising the above metal complex and at least another organic functional material, wherein the at least another organic functional material is selected from a hole injecting material, a hole transporting material, an electron injecting material, an electron blocking material, a hole blocking material, a light emitting guest material, a light emitting host material or an organic dye.
The invention also provides a composition comprising the metal complex or the mixture of the metal complex and at least one organic solvent.
The invention also provides an organic electronic device, which comprises at least one functional layer, wherein the functional layer comprises the metal complex or the mixture or is prepared from the composition.
Further, the organic electronic device is selected from the group consisting of an Organic Light Emitting Diode (OLED), an organic photovoltaic cell (OPV), an organic light emitting cell (OLEEC), an Organic Field Effect Transistor (OFET), an organic laser, an organic spintronic device, an organic sensor, and an organic plasmon emitting diode.
Compared with the prior art, the invention has the remarkable advantages that: the iridium metal complex provided by the invention contains a benzisoquinoline group in the structure to improve the charge transmission in an organic electronic device, so that the luminous efficiency of the device is improved, and the service life of the device is prolonged.
Detailed Description
The technical solutions of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to upper and lower in the actual use or operational state of the device. In addition, in the description of the present application, the term "comprising" means "including but not limited to," the term "plurality" means "two or more," and the term "and/or" includes any and all combinations of one or more of the associated listed items. Various embodiments of the application may exist in a range of forms; it should be understood that the description in a range format is merely for convenience and brevity and should not be construed as a rigid limitation on the scope of the application; it is therefore to be understood that the range description has specifically disclosed all possible sub-ranges and individual values within that range. For example, it should be considered that a description of a range from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as1, 2,3, 4,5, and 6, wherever applicable. In addition, whenever a numerical range is referred to herein, it is meant to include any reference number (fractional or integer) within the indicated range.
The term "and/or," "and/or," as used herein, includes any one of two or more of the listed items in relation to each other, as well as any and all combinations of the listed items in relation to each other, including any two of the listed items in relation to each other, any more of the listed items in relation to each other, or all combinations of the listed items in relation to each other. It should be noted that, when at least three items are connected by a combination of at least two conjunctions selected from the group consisting of "and/or", "and/or", it should be understood that, in the present application, the technical solutions include technical solutions that all use "logical and" connection, and also include technical solutions that all use "logical or" connection. For example, "a and/or B" includes three parallel schemes A, B and a+b. For another example, the technical schemes of "a, and/or B, and/or C, and/or D" include any one of A, B, C, D (i.e., the technical schemes of all "logical or" connections), also include any and all combinations of A, B, C, D, i.e., the combinations of any two or three of A, B, C, D, and also include four combinations of A, B, C, D (i.e., the technical schemes of all "logical and" connections).
In the present invention, aromatic groups and aromatic ring systems have the same meaning and can be interchanged.
In the present invention, the heteroaromatic groups, heteroaromatic groups and heteroaromatic ring systems have the same meaning and can be interchanged.
In the present invention, the "heteroatom" is a non-carbon atom, and may be an N atom, an O atom, an S atom, or the like.
In the present invention, "substituted" means that one or more hydrogen atoms in the substituted group are substituted with the substituent.
In the present invention, "monosubstituted" means substituted with one substituent, "disubstituted" means substituted with two substituents, "trisubstituted" means substituted with three substituents, "tetrasubstituted" means substituted with four substituents, "pentasubstituted" means substituted with five substituents.
In the present invention, the same substituent may be independently selected from different groups when it appears multiple times. If the general formula contains a plurality of R, R can be independently selected from different groups.
In the present invention, "substituted or unsubstituted" means that the defined group may or may not be substituted. When a defined group is substituted, it is understood that the defined group may be substituted with one or more substituents R selected from, but not limited to: deuterium, cyano, isocyano, nitro or halogen, alkyl containing 1 to 20C atoms, heterocyclyl containing 3 to 20 ring atoms, aromatic containing 6 to 20 ring atoms, heteroaromatic containing 5 to 20 ring atoms, -NR' R ", silane, carbonyl, alkoxycarbonyl, aryloxycarbonyl, carbamoyl, haloformyl, formyl, isocyanate, thiocyanate, isothiocyanate, hydroxyl, trifluoromethyl, and which may be further substituted with substituents acceptable in the art; it is understood that R 'and R "in-NR' R" are each independently selected from, but not limited to: H. deuterium atoms, cyano groups, isocyano groups, nitro groups or halogen groups, alkyl groups containing 1 to 10C atoms, heterocyclic groups containing 3 to 20 ring atoms, aromatic groups containing 6 to 20 ring atoms, heteroaromatic groups containing 5 to 20 ring atoms. Preferably, R is selected from, but not limited to: deuterium atoms, cyano groups, isocyano groups, nitro groups or halogen groups, alkyl groups containing 1 to 10C atoms, heterocyclic groups containing 3 to 10 ring atoms, aromatic groups containing 6 to 20 ring atoms, heteroaromatic groups containing 5 to 20 ring atoms, silane groups, carbonyl groups, alkoxycarbonyl groups, aryloxycarbonyl groups, carbamoyl groups, haloformyl groups, formyl groups, isocyanate groups, thiocyanate groups, isothiocyanate groups, hydroxyl groups, trifluoromethyl groups, and which may be further substituted with substituents acceptable in the art.
In the present invention, the "number of ring atoms" means the number of atoms among atoms constituting the ring itself of a structural compound (for example, a monocyclic compound, a condensed ring compound, a crosslinked compound, a carbocyclic compound, a heterocyclic compound) in which atoms are bonded to form a ring. When the ring is substituted with a substituent, the atoms contained in the substituent are not included in the ring-forming atoms. The same applies to the "number of ring atoms" described below, unless otherwise specified. For example, the number of ring atoms of the benzene ring is 6, the number of ring atoms of the naphthalene ring is 10, and the number of ring atoms of the thienyl group is 5.
"Aryl or aromatic group" refers to an aromatic hydrocarbon group derived from an aromatic ring compound by removal of one hydrogen atom, which may be a monocyclic aryl group, or a fused ring aryl group, or a polycyclic aryl group, at least one of which is an aromatic ring system for a polycyclic species. For example, "substituted or unsubstituted aryl group having 6 to 40 ring atoms" means an aryl group having 6 to 40 ring atoms, preferably a substituted or unsubstituted aryl group having 6 to 30 ring atoms, more preferably a substituted or unsubstituted aryl group having 6 to 18 ring atoms, particularly preferably a substituted or unsubstituted aryl group having 6 to 14 ring atoms, and the aryl group is optionally further substituted; suitable examples include, but are not limited to: phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, fluoranthryl, triphenylenyl, pyrenyl, perylenyl, tetracenyl, fluorenyl, perylenyl, acenaphthylenyl and derivatives thereof. It will be appreciated that a plurality of aryl groups may also be interrupted by short non-aromatic units (e.g. <10% of non-H atoms, such as C, N or O atoms), such as acenaphthene, fluorene, or 9, 9-diaryl fluorene, triarylamine, diaryl ether systems in particular should also be included in the definition of aryl groups.
"Heteroaryl or heteroaromatic group" means that at least one carbon atom is replaced by a non-carbon atom on the basis of an aryl group, which may be an N atom, an O atom, an S atom, or the like. For example, "substituted or unsubstituted heteroaryl having 5 to 40 ring atoms" refers to heteroaryl having 5 to 40 ring atoms, preferably substituted or unsubstituted heteroaryl having 6 to 30 ring atoms, more preferably substituted or unsubstituted heteroaryl having 6 to 18 ring atoms, particularly preferably substituted or unsubstituted heteroaryl having 6 to 14 ring atoms, and the heteroaryl is optionally further substituted, suitable examples include, but are not limited to: thienyl, furyl, pyrrolyl, diazolyl, triazolyl, imidazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolinyl, isoquinolinyl, quinazolinyl, quinoxalinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, benzothienyl, benzofuranyl, indolyl, pyrroloimidazolyl, pyrrolopyrrolyl, thienopyrrolyl, thienothiophenoyl, furopyrrolyl, furofuranyl, thienofuranyl, benzisoxazolyl, benzisothiazolyl, benzimidazolyl, phthalazinyl, phenanthridinyl, primary pyridyl, quinazolinonyl, dibenzothienyl, dibenzofuranyl, carbazolyl, and derivatives thereof.
In the present invention, "alkyl" may denote a linear, branched and/or cyclic alkyl group. The carbon number of the alkyl group may be 1 to 50, 1 to 30, 1 to 20, 1 to 10, or 1 to 6. The phrase containing the term, for example, "C 1-C 9 alkyl" refers to an alkyl group containing 1 to 9 carbon atoms, which at each occurrence may be, independently of one another, C 1 alkyl, C 2 alkyl, C 3 alkyl, C 4 alkyl, C 5 alkyl, C 6 alkyl, C 7 alkyl, C 8 alkyl, or C 9 alkyl. Non-limiting examples of alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, isobutyl, 2-ethylbutyl, 3-dimethylbutyl, n-pentyl, isopentyl, neopentyl, tert-pentyl, cyclopentyl, 1-methylpentyl, 3-methylpentyl, 2-ethylpentyl, 4-methyl-2-pentyl, n-hexyl, 1-methylhexyl, 2-ethylhexyl, 2-butylhexyl, cyclohexyl, 4-methylcyclohexyl, 4-tert-butylcyclohexyl, n-heptyl, 1-methylheptyl, 2-dimethylheptyl, 2-ethylheptyl, 2-butylheptyl, n-octyl, tert-octyl, 2-ethyloctyl, 2-butyloctyl, 2-hexyloctyl, 3, 7-dimethyloctyl, cyclooctyl, n-nonyl, n-decyl, adamantyl, 2-ethyldecyl, 2-butyldecyl, 2-hexyldecyl, 2-octyldecyl, n-undecyl, n-dodecyl, 2-ethyldodecyl, 2-butyldodecyl, 2-hexyldodecyl, 2-octyldodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl, 2-ethylhexadecyl, 2-butylhexadecyl, 2-hexylhexadecyl, 2-octylhexadecyl, n-heptadecyl, n-octadecyl, n-nonadecyl, n-eicosyl, 2-ethyl eicosanyl, 2-butyl eicosanyl, 2-hexyl eicosanyl, 2-octyl eicosanyl, n-heneicosyl, n-docosyl, n-tricosyl, n-tetracosyl, n-pentacosyl, n-hexacosyl, n-heptacosyl, n-octacosyl, n-nonacosyl, n-triacontyl, and the like.
The term "alkoxy" refers to a group of the structure "-O-alkyl", i.e. an alkyl group as defined above is attached to other groups via an oxygen atom. Phrases containing this term, suitable examples include, but are not limited to: methoxy (-O-CH 3 or-OMe), ethoxy (-O-CH 2CH3 or-OEt), and t-butoxy (-O-C (CH 3)3 or-OtBu).
In the present invention "×" associated with a single bond represents a linking or fusing site;
in the present invention, when no linking site is specified in the group, an optionally-ligatable site in the group is represented as a linking site;
in the present invention, when the same group contains a plurality of substituents of the same symbol, each substituent may be the same or different from each other, for example The 6R groups on the benzene ring may be the same or different from each other.
In the present invention, a single bond to which a substituent is attached extends through the corresponding ring, meaning that the substituent may be attached to an optional position on the ring, e.gR in (C) is connected with any substitutable site of benzene ring.
As used in the present invention, "a combination thereof", "any combination thereof", "a combination of groups", "a combination", and the like include all suitable combinations of any two or more of the listed groups.
In the present invention, "further", "still further", "particularly" and the like are used for descriptive purposes to indicate differences in content but should not be construed as limiting the scope of the invention.
In the present invention, "optional" means optional or not, that is, means any one selected from two parallel schemes of "with" or "without". If multiple "alternatives" occur in a technical solution, if no particular description exists and there is no contradiction or mutual constraint, then each "alternative" is independent.
In the invention, the technical characteristics described in an open mode comprise a closed technical scheme composed of the listed characteristics and also comprise an open technical scheme comprising the listed characteristics.
A metal complex, which is shown in a general formula (I):
Wherein;
L is independently selected from monovalent anionic organic ligands for each occurrence;
m is selected from 1, 2 or 3;
X is independently selected from CR 2 or N for each occurrence;
each occurrence of R 1、R2 is independently selected from: -H, -D, a linear alkyl group having 1 to 10C atoms, a branched or cyclic alkyl group having 3 to 10C atoms, a silyl group, a cyano group, an isocyano group, a hydroxyl group, a nitro group, an amine group, -CF 3, -Cl, -Br, -F, -I, a substituted or unsubstituted aromatic group having 6 to 30 ring atoms, a substituted or unsubstituted heteroaromatic group having 6 to 30 ring atoms, or a combination of these groups;
n is selected from 0,1, 2,3, 4, 5, 6 or 7.
In one embodiment, each occurrence of R 1、R2, each independently selected from-H, -D, straight chain alkyl having 1 to 6C atoms, branched or cyclic alkyl having 3 to 10C atoms, silyl, cyano, isocyano, hydroxy, nitro, amino, -CF 3, -Cl, -Br, -F, -I, or the following groups:
Wherein: each occurrence of X 1 is independently selected from CR 3 or N;
Each occurrence of R 3 is independently selected from: -H, -D, a linear alkyl group having 1 to 10C atoms, a branched or cyclic alkyl group having 3 to 10C atoms, a silyl group, a cyano group, an isocyano group, a hydroxyl group, a nitro group, an amine group, -CF 3, -Cl, -Br, -F, -I, a substituted or unsubstituted aromatic group having 6 to 30 ring atoms, a substituted or unsubstituted heteroaromatic group having 6 to 30 ring atoms, or a combination of these groups;
* Representing the ligation site.
In one embodiment, L is selected from monovalent anionic bidentate organic ligands; further, L is selected from the following structures:
ar 1、Ar2 is independently selected from a substituted or unsubstituted aromatic group having 6 to 40 ring atoms, a substituted or unsubstituted heteroaromatic group having 5 to 40 ring atoms, or a substituted or unsubstituted non-aromatic ring system having 5 to 40 ring atoms;
each time R 4、R5 is present, independently selected from the group consisting of-H, -D, straight chain alkyl having 1-20 carbon atoms, branched or cyclic alkyl having 3-20 carbon atoms, straight chain alkoxy having 1-20 carbon atoms, straight chain thioalkoxy having 1-20 carbon atoms, branched or cyclic alkoxy having 3-20 carbon atoms, branched or cyclic thioalkoxy having 3-20 carbon atoms, silyl, keto having 1-20 carbon atoms, alkenyl having 2-20 carbon atoms, alkoxycarbonyl having 2-20 carbon atoms, aryloxycarbonyl having 7-20 carbon atoms, cyano, carbamoyl, haloformyl, formyl, isocyano, isocyanate, thiocyanate, isothiocyanate, hydroxy, nitro, -CF 3、-OCF3, -Cl, -Br, -F, substituted or unsubstituted aromatic groups having 6-30 ring atoms, substituted or unsubstituted heteroaromatic groups having 5-30 ring atoms, or a combination of these groups;
r 4、R5 is cyclic or acyclic with respect to one another;
* Representing the ligation site.
In one embodiment, ar 1、Ar2 is independently selected from a substituted or unsubstituted aromatic group having 6-20 ring atoms, a substituted or unsubstituted heteroaromatic group having 5-20 ring atoms, or a substituted or unsubstituted non-aromatic ring system having 5-20 ring atoms for each occurrence.
In one embodiment, ar 1、Ar2 is independently selected from a substituted or unsubstituted aromatic group having 6-15 ring atoms, a substituted or unsubstituted heteroaromatic group having 6-15 ring atoms, or a substituted or unsubstituted non-aromatic ring system having 6-15 ring atoms for each occurrence.
In a particular embodiment, ar 1、Ar2 is independently selected from any one of the following groups:
Wherein:
v is independently selected from CR 6 or N for each occurrence;
W is independently selected from CR 7R8、NR7、O、S、S=O、SO2、PR7、BR7 or SiR 7R8 for each occurrence;
Each time R 6、R7、R8 is present, independently selected from the group consisting of-H, -D, straight chain alkyl having 1-20 carbon atoms, branched or cyclic alkyl having 3-20 carbon atoms, straight chain alkoxy having 1-20 carbon atoms, straight chain thioalkoxy having 1-20 carbon atoms, branched or cyclic alkoxy having 3-20 carbon atoms, branched or cyclic thioalkoxy having 3-20 carbon atoms, silyl, keto having 1-20 carbon atoms, alkenyl having 2-20 carbon atoms, alkoxycarbonyl having 2-20 carbon atoms, aryloxycarbonyl having 7-20 carbon atoms, cyano, carbamoyl, haloformyl, formyl, isocyano, isocyanate, thiocyanate, isothiocyanate, hydroxy, nitro, -CF 3、-OCF3, -Cl, -Br, -F, substituted or unsubstituted aromatic groups having 6-30 ring atoms, substituted or unsubstituted heteroaromatic groups having 5-30 ring atoms, or a combination of these groups.
When V is a linking site, V is selected from C or N atoms; when W is a linking site, W is selected from the group consisting of N atoms.
In one embodiment, ar 1 is selected from the following groups:
Wherein: # represents the site of attachment of Ar 1 to Ar 2; * Represents the site of attachment of Ar 1 to metallic Ir;
q1 is selected from C or N.
In one embodiment, ar 2 is selected from the following groups:
Wherein: # represents the site of attachment of Ar 1 to Ar 2; * Represents the site of attachment of Ar 2 to metallic Ir;
Q2 is selected from C or N.
In one embodiment of the present invention, in one embodiment,Selected from any one of the following general structures (A-1) to (A-11):
Wherein: q1 and Q2 are selected from C or N, and Q1 and Q2 are different from each other.
In one specific embodiment of the present invention,Selected from any one of the following general structures (B-1) to (B-22):
Wherein: n 1 is independently selected from 0, 1,2, 3, or 4;
n 2 is independently selected from 0, 1,2, 3,4, 5, 6, 7, or 8;
n 3 is independently selected from 0,1,2, 3, 4, 5, or 6;
n4 is independently selected from 0,1, 2,3, 4, 5, 6 or 7.
In one embodiment, each occurrence of R 6、R7、R8, independently selected from-H, -D, a straight chain alkyl group having 1-10 carbon atoms, a branched or cyclic alkyl group having 3-10 carbon atoms, a silyl group, a cyano group, an isocyano group, an isocyanate, a thiocyanate, a hydroxyl group, a nitro group, -CF 3、-OCF3, -Cl, -Br, -F, a substituted or unsubstituted aromatic group having 6-15 ring atoms, a substituted or unsubstituted heteroaromatic group having 5-15 ring atoms, or a combination of these groups.
In one embodiment, R 6、R7、R8 is independently selected from-H, -D, a straight chain alkyl group having 1-10 carbon atoms, a branched or cyclic alkyl group having 3-10 carbon atoms, cyano, nitro, CF 3、-OCF3, -Cl, -Br, -F, a substituted or unsubstituted aromatic group having 6-10 ring atoms, a substituted or unsubstituted heteroaromatic group having 6-10 ring atoms, or a combination of such groups.
The metal complexes according to the present invention include, but are not limited to, the following structures:
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In one embodiment, a metal complex of the present application can be used as an organic functional material in a functional layer of an organic electronic device, particularly an OLED device. The organic functional material may be, but is not limited to, a Hole Injection Material (HIM), a Hole Transport Material (HTM), an Electron Transport Material (ETM), an Electron Injection Material (EIM), an Electron Blocking Material (EBM), a Hole Blocking Material (HBM), a light emitting guest material (Gust Emitter), a light emitting host material (Host Emitter), and an organic dye.
In one embodiment, the metal complex of the present application is used in a light emitting layer, and preferably, the metal complex provided by the present application is used as a guest material of the light emitting layer in the light emitting layer.
The application further provides a mixture comprising at least one metal complex as described above and at least one further organic functional material. The another organic functional material is selected from the group consisting of a hole injecting material, a hole transporting material, an electron injecting material, an electron blocking material, a hole blocking material, a light emitting guest material, a light emitting host material, and an organic dye. Wherein the luminophore is selected from singlet luminophores (fluorescent luminophores) or triplet luminophores (phosphorescent luminophores) grade organic thermal excitation delayed fluorescence material (TADF material). The details of the various organic functional materials are described in WO2010135519A1, US20090134784A1 and WO2011110277A1, the entire contents of which 3 patent documents are hereby incorporated by reference. It is understood that the other organic functional material may be a small molecule organic material and a high polymer material.
In an embodiment, the further organic functional material is selected from a host material. Wherein the weight percentage of a metal complex in the mixture is more than 0 and less than or equal to 25wt%, preferably more than 0 and less than or equal to 15wt%, more preferably more than 0 and less than or equal to 5wt%, and most preferably more than 0 and less than or equal to 2wt%.
The application also relates to a composition comprising at least one metal complex or mixture as described above, and at least one organic solvent.
The organic solvent is at least one selected from aromatic or heteroaromatic based solvents, ester based solvents, aromatic ketone based solvents, aromatic ether based solvents, aliphatic ketones, aliphatic ethers, alicyclic compounds, olefin compounds, boric acid ester compounds and phosphoric acid ester compounds.
In at least one embodiment, the organic solvent is selected from aromatic or heteroaromatic based solvents in the composition.
The aromatic or heteroaromatic based solvent may be selected from, but is not limited to, p-diisopropylbenzene, pentylbenzene, tetrahydronaphthalene, cyclohexylbenzene, chloronaphthalene, 1, 4-dimethylnaphthalene, 3-isopropylbiphenyl, p-methylisopropylbenzene, dipentylbenzene, tripentylbenzene, pentyltoluenes, o-diethylbenzene, m-diethylbenzene, p-diethylbenzene, 1,2,3, 4-tetramethylbenzene, 1,2,3, 5-tetramethylbenzene, 1,2,4, 5-tetramethylbenzene, butylbenzene, dodecylbenzene, dihexylbenzene, dibutylbenzene, p-diisopropylbenzene, cyclohexylbenzene, benzylbutylbenzene, dimethylnaphthalene, 3-isopropylbiphenyl, p-methylisopropylbenzene, 1-methylnaphthalene, 1,2, 4-trichlorobenzene, 4-difluorodiphenylmethane, 1, 2-dimethoxy-4- (1-propenyl) benzene, diphenylmethane, 2-phenylpyridine, 3-phenylpyridine, N-methyldiphenylamine, 4-isopropylbiphenyl, α -dichlorodiphenylmethane, 4- (3-phenylpropylpyridine, 1, 3-dimethylquinoline, 2-dimethylquinoline, and at least one of the ethyl esters of furan.
The ester-based solvent may be selected from, but is not limited to, alkyl octanoates, alkyl sebacates, alkyl stearates, alkyl benzoates, alkyl phenylacetates, alkyl cinnamates, alkyl oxalates, alkyl maleates, alkyl lactones, alkyl oleates, and the like. At least one of octyl octanoate, diethyl sebacate, diallyl phthalate and isononyl isononanoate is particularly preferable.
The aromatic ketone-based solvent may be selected from, but is not limited to, 1-tetralone, 2- (phenylepoxy) tetralone, 6- (methoxy) tetralone, acetophenone, propiophenone, benzophenone, and derivatives thereof. Among them, the derivative may be selected from, but not limited to, at least one of 4-methylacetophenone, 3-methylacetophenone, 2-methylacetophenone, 4-methylpropophenone, 3-methylpropophenone, and 2-methylpropophenone, as an example.
The aromatic ether-based solvent may be selected from, but is not limited to, at least one of 3-phenoxytoluene, butoxybenzene, p-anisaldehyde dimethyl acetal, tetrahydro-2-phenoxy-2H-pyran, 1, 2-dimethoxy-4- (1-propenyl) benzene, 1, 4-benzodioxane, 1, 3-dipropylbenzene, 2, 5-dimethoxytoluene, 4-ethylben-ther, 1, 3-dipropoxybenzene, 1,2, 4-trimethoxybenzene, 4- (1-propenyl) -1, 2-dimethoxybenzene, 1, 3-dimethoxybenzene, glycidyl phenyl ether, dibenzyl ether, 4-t-butyl anisole, trans-p-propenyl anisole, 1, 2-dimethoxybenzene, 1-methoxynaphthalene, diphenyl ether, 2-phenoxymethyl ether, 2-phenoxytetrahydrofuran and ethyl-2-naphthyl ether.
The aliphatic ketone-based solvent may be selected from, but is not limited to, 2-nonene, 3-nonene, 5-nonene, 2-decanone, 2, 5-hexanedione, 2,6, 8-trimethyl-4-nonene, fenchyl ketone, phorone, isophorone, di-n-amyl ketone, and the like; or aliphatic ethers such as at least one of amyl ether, hexyl ether, dioctyl ether, ethylene glycol dibutyl ether, diethylene glycol diethyl ether, diethylene glycol butyl methyl ether, diethylene glycol dibutyl ether, triethylene glycol dimethyl ether, triethylene glycol ethyl methyl ether, triethylene glycol butyl methyl ether, tripropylene glycol dimethyl ether and tetraethylene glycol dimethyl ether.
It is understood that the organic solvents may be used alone or as a mixed solvent of two or more organic solvents.
In one embodiment, the composition of the present application comprises at least one metal complex or mixture as described above, and at least one organic solvent, and may further comprise another organic solvent.
The other organic solvent may be selected from, but is not limited to, at least one of methanol, ethanol, 2-methoxyethanol, dichloromethane, chloroform, chlorobenzene, o-dichlorobenzene, tetrahydrofuran, anisole, morpholine, toluene, o-xylene, m-xylene, p-xylene, 1,4 dioxane, acetone, methyl ethyl ketone, 1,2 dichloroethane, 3-phenoxytoluene, 1-trichloroethane, 1, 2-tetrachloroethane, ethyl acetate, butyl acetate, dimethylformamide, dimethylacetamide, dimethylsulfoxide (DMSO), tetrahydronaphthalene, decalin, and indene.
In one embodiment, an organic solvent suitable for the present application is a solvent having Hansen (Hansen) solubility parameters within the following ranges:
δd (dispersion force) is in the range of 17.0MPa 1/2-23.2MPa1/2, especially in the range of 18.5MPa 1/2-21.0MPa1/2;
δp (polar force) is in the range of 0.2MPa 1/2-12.5MPa1/2, in particular in the range of 2.0MPa 1/2-6.0MPa1/2;
δh (hydrogen bonding force) is in the range of 0.9MPa 1/2-14.2MPa1/2, especially in the range of 2.0MPa 1/2-6.0MPa1/2.
In one embodiment, the organic solvent is selected with consideration of boiling point in the composition according to the present application. In at least some embodiments, the organic solvent has a boiling point of ∈deg.C or greater; preferably not less than 180 ℃; preferably not less than 200 ℃; more preferably not less than 250 ℃; the optimal temperature is more than or equal to 300 ℃. Boiling points in these ranges are beneficial in preventing nozzle clogging of inkjet printheads.
It is understood that the organic solvent may be evaporated from the solvent system to form a film comprising the organic compound.
In one embodiment, the composition is a solution. In still other embodiments, the composition is a suspension. The solution or suspension may additionally include additives for adjusting viscosity, adjusting film forming properties, improving adhesion, etc. The additive may be selected from at least one of, but not limited to, a surface active compound, a lubricant, a wetting agent, a dispersing agent, a hydrophobizing agent, and a binder.
The composition may also be referred to as an ink.
When used in the printing process, the viscosity and surface tension of the ink are important parameters. The surface tension parameters of a suitable ink are suitable for a particular substrate and a particular printing method.
In one embodiment, the ink according to the application has a surface tension at the operating temperature or at 25 ℃ in the range of about 19dyne/cm to 50dyne/cm; more preferably 22dyne/cm to 35dyne/cm; preferably from 25dyne/cm to 33dyne/cm.
In one embodiment, the ink according to the present application has a viscosity in the range of 1cps to 100cps at the working temperature or 25 ℃; preferably 1cps to 50cps; more preferably 1.5cps to 20cps; and preferably from 4.0cps to 20cps.
It will be appreciated that inks having the surface tension and viscosity described above will facilitate inkjet printing.
It will be appreciated that the viscosity of the ink may be adjusted by different methods, such as by appropriate solvent selection and concentration of functional material in the ink. The inks comprising the organic compounds according to the application can be conveniently adjusted to the printing process used in the printing ink in the appropriate range. The compositions according to the application comprise organic compounds or mixtures in a mass percentage of 0.01% to 15% by weight, preferably 0.1% to 10% by weight, more preferably 0.2% to 5% by weight, most preferably 0.25% to 3% by weight.
The application also relates to the use of said composition as a coating or printing ink in the preparation of an organic electronic device. In one embodiment, the composition is used in the preparation of organic electronic devices by a print or coating preparation method. The printing or coating may be prepared by, but is not limited to, ink jet printing, gravure printing, spray printing, letterpress printing, screen printing, dip coating, spin coating, doctor blade coating, roll printing, twist roller printing, offset printing, flexography, rotary printing, spray coating, brush coating, pad printing, slot die coating, and the like. Preferred are gravure printing, inkjet printing and inkjet printing.
The application also relates to the use of a metal complex, mixture or composition as described above in an organic electronic device. In one embodiment, the present application provides an organic electronic device including at least one functional layer. The functional layer comprises at least one metal complex or mixture as described above, or the functional layer is prepared from the composition as described above.
Further, the organic electronic device includes a cathode, an anode, and at least one functional layer. The functional layer comprises at least one iridium metal complex or mixture as described above or is prepared from the composition as described above.
The functional layer may be, but is not limited to, a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), a light emitting layer, an electron blocking layer, an Electron Injection Layer (EIL), an Electron Transport Layer (ETL), or a hole blocking layer. Preferably, the functional layer is a light emitting layer. The luminescent layer comprises at least one metal complex or mixture as described above, or is prepared from the composition as described above.
In one embodiment, the light-emitting layer includes a light-emitting host material and a light-emitting guest material, and the light-emitting guest material is a metal complex or a mixture thereof. Further, the light-emitting layer guest material accounts for 25% or more of the host material in mass ratio; further, the light-emitting layer guest material accounts for 15% or more of the host material in mass ratio; further, the light-emitting layer guest material accounts for 5% or more of the host material by mass.
The organic electronic device may be, but is not limited to, an Organic Light Emitting Diode (OLED), an organic photovoltaic cell (OPV), an organic light emitting cell (OLEEC), an Organic Field Effect Transistor (OFET), an organic laser, an organic spintronic device, an organic sensor, an organic plasmon emitting diode (Organic Plasmon Emitting Diode), and the like. Organic electroluminescent devices such as OLEDs, oleccs, organic light emitting field effect transistors, etc. are particularly preferred. Further particularly preferred are OLEDs.
The substrate may be transparent or opaque. A transparent substrate may be used to fabricate a transparent light emitting device. See, for example, bulovic et al Nature 1996,380, p29, and Gu et al, appl. Phys. Lett.1996,68, p2606. The substrate may also be rigid or elastic. In one embodiment, the substrate is plastic, metal, semiconductor wafer, or glass. Preferably, the substrate has a smooth surface, and a substrate free of surface defects is a particularly desirable choice. In a preferred embodiment, the substrate is flexible, optionally in the form of a polymer film or plastic, having a glass transition temperature Tg of 150℃or higher, preferably over 200℃and more preferably over 250℃and most preferably over 300 ℃. Examples of suitable flexible substrates are poly (ethylene terephthalate) (PET) and polyethylene glycol (2, 6-naphthalene) (PEN).
The anode is an electrode that injects holes, and the anode can easily inject holes into a hole injection layer, or a hole transport layer, or a light emitting layer. The anode may comprise a conductive metal, conductive metal oxide, or conductive polymer. In one embodiment, the absolute value of the difference between the work function of the anode and the HOMO level or valence band level of the emitter in the light emitting layer or of the p-type semiconductor material as HIL or HTL or Electron Blocking Layer (EBL) is less than 0.5eV, preferably less than 0.3eV, most preferably less than 0.2eV. Examples of anode materials include, but are not limited to: al, cu, au, ag, mg, fe, co, ni, mn, pd, pt, ITO, aluminum doped zinc oxide (AZO), and the like. Other suitable anode materials are known and can be readily selected for use by one of ordinary skill in the art. The anode material may be deposited using any suitable technique, such as a suitable physical vapor deposition method including radio frequency magnetron sputtering, vacuum thermal evaporation, electron beam (e-beam), and the like. In certain embodiments, the anode is patterned. Patterned ITO conductive substrates are commercially available and can be used to prepare devices according to the present application.
The cathode is an electrode injecting electrons, and the cathode can easily inject electrons into an electron injection layer, or an electron transport layer, or a light emitting layer. The cathode may comprise a conductive metal or conductive metal oxide. In one embodiment, the absolute value of the difference between the work function of the cathode and the LUMO or conduction band level of the light-emitting body in the light-emitting layer or of the n-type semiconductor material as an Electron Injection Layer (EIL) or Electron Transport Layer (ETL) or Hole Blocking Layer (HBL) is less than 0.5eV, preferably less than 0.3eV, and most preferably less than 0.2eV. In principle, all materials that can be used as cathodes of the organic electronic devices are possible as cathode materials of the organic electronic devices of the application. Examples of cathode materials include, but are not limited to: al, au, ag, ca, ba, mg, liF/Al, mgAg alloy, baF2/Al, cu, fe, co, ni, mn, pd, pt, ITO, etc. The cathode material may be deposited using any suitable technique, such as a suitable physical vapor deposition method including radio frequency magnetron sputtering, vacuum thermal evaporation, electron beam (e-beam), and the like.
The OLED may further include other functional layers such as a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Blocking Layer (EBL), an Electron Injection Layer (EIL), an Electron Transport Layer (ETL), a Hole Blocking Layer (HBL). Materials suitable for use in these functional layers are described in detail above and in WO2010135519A1, US20090134784A1 and WO2011110277A1, the entire contents of which 3 patent documents are hereby incorporated by reference.
The hole injection layer may facilitate injection of holes from the anode to the hole transport layer, thereby reducing the voltage required to inject holes. The hole injection material is a material that can efficiently receive injected holes from the positive electrode, and it is preferable that the Highest Occupied Molecular Orbital (HOMO) of the hole injection material is between the work function of the positive electrode material and the HOMO of the hole transport layer material. Common hole injection materials include, but are not limited to: metalloporphyrins, oligothiophenes, arylamine-based organic materials, hexanitrile hexaazabenzophenanthrene-based organic materials, and the like.
The hole transport layer may be used to smoothly receive holes injected from the anode or the hole injection layer and transfer the holes to the light emitting layer. Common hole transport materials include, but are not limited to: aromatic amine compounds, styrene compounds, butadiene compounds, conductive polymers, block copolymers having both conjugated and non-conjugated moieties, and the like, but are not limited thereto.
The electron blocking layer may be disposed between the hole transport layer and the light emitting layer to block electrons from being transported from the light emitting layer to the hole transport layer, thereby confining holes in the light emitting layer to improve light emitting efficiency. Common electron blocking layer materials include, but are not limited to: triarylamine organic compounds, metazole compounds, or materials known in the art.
The host material for the light-emitting layer includes a condensed ring aromatic ring derivative or a heterocyclic ring-containing compound, or the like. Specifically, examples of the condensed ring aromatic ring derivative include anthracene derivatives, pyrene derivatives, naphthalene derivatives, benzophenanthrene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, and the like, and examples of the heterocyclic ring-containing compound include carbazole derivatives, dibenzofuran derivatives, ladder-type furan compounds, pyrimidine derivatives, triazine derivatives, and the like, but are not limited thereto.
In an embodiment, the host material for the light emitting layer is selected from co-host materials, preferably co-host materials are selected from benzophenanthrene derivatives and triazine derivatives.
The electron transport layer may be used to smoothly transport electrons to the light emitting layer. The electron transport material is selected from materials having high electron mobility, which can efficiently receive electrons injected from the negative electrode or the electron injection layer. Specific examples thereof may include, but are not limited to: at least one of Al complexes of 8-hydroxyquinoline, complexes comprising Alq3, organic radical compounds, hydroxyflavone-metal complexes, lithium 8-hydroxyquinoline (LiQ), ETM and benzimidazole-based compounds.
The electron injection layer can promote electron injection from the negative electrode and reduce the voltage required for electron injection. Specific examples thereof include, but are not limited to: fluorenone, anthraquinone dimethane, diphenoquinone, thiopyran dioxide, oxazole, diazole, triazole, imidazole, perylene tetracarboxylic acid, fluorenylidene methane, anthrone and the like, and derivatives thereof, metal complex compounds, nitrogen-containing 5-membered ring derivatives, tmPyPB and the like.
The hole blocking layer may block holes from reaching the electron transport layer, thereby confining electrons in the light emitting layer to improve light emitting efficiency. Specific examples thereof include, but are not limited to, diazole derivatives or triazole derivatives, phenanthroline derivatives, BCP, aluminum complexes, and the like.
The organic electronic device has a luminescence wavelength of between 300 and 1000nm, preferably between 350 and 900nm, more preferably between 640 and 650 nm.
In one embodiment, the organic electronic device of the present application is a solution-type organic electronic device, and one or more functional layers thereof are prepared by printing; further, the solution-type organic electronic device is a solution-type OLED.
The application also relates to the use of an organic electronic device according to the application in various electronic devices, which may be, but are not limited to, display devices, lighting devices, light sources, sensors, etc.
The application also relates to an electronic device comprising said electronic device. The electronic device may be, but is not limited to, a display device, a lighting device, a light source, a sensor, and the like.
The present application will now be described in more detail by way of the following examples, which are intended to be illustrative of the application and not limiting thereof. The present application is not limited to the following examples.
The specific embodiment is as follows:
example 1: synthesis of Compound 1
Synthesis of Compound 1-1:
Accurately weighing compound A (16.7 g,100 mmol), 2-bromopyridine (15.8 g,100 mmol) tris (dibenzylideneacetone) dipalladium (1.73 g,3 mmol), sodium tert-butoxide (19.2 g,200 mmol) sequentially adding into a 1000mL three-neck flask, adding about 450mL of anhydrous toluene, pumping and filling nitrogen three times, then dropwise adding tri-tert-butylphosphine (plastid ratio of 10%12 mL) into a reaction system, and then heating to 100 ℃ for reaction for 6 hours. After the raw materials are completely reacted, cooling to room temperature, adding water for dilution, extracting with ethyl acetate for three times, combining organic phases, drying with anhydrous sodium sulfate, decompressing and distilling to remove redundant solvent, and recrystallizing the crude product with toluene/methanol. About 14.7g of compound 1-1 was obtained in yield: 60.2%. Ms 245.31
Synthesis of Compounds 1-2:
Accurately weighing compound 1-1 (14.6 g,60 mmol) and adding into a 500mL three-necked flask, adding iridium trichloride monohydrate (3.8 g12 mmol), adding 200mL of ethylene glycol diethyl ether, pumping nitrogen gas three times, heating to 120 ℃ for reaction for 12 hours, cooling the reaction solution to room temperature, pumping filtration, leaching the filter cake with petroleum ether several times, and obtaining about 13g of crude product of compound 1-2. Yield: 90 percent of
Synthesis of Compounds 1-3:
accurately weighing compound 1-2 (13 g,9 mmol) silver triflate (4.6 g,18 mmol), adding into a 250mL three-neck flask, adding 80mL dichloromethane and 40mL methanol, pumping nitrogen three times, and heating to 60 ℃ for reaction for 12 hours. And cooling to room temperature after the reaction is finished, removing redundant solvent by reduced pressure distillation, washing the crude product with water and then washing with petroleum ether for three times. The solids were spun-dried to give crude 1-3 about 10.3g. Yield: 69%
Synthesis of Compound 1:
Accurately weighing the compounds 1-3 (9 g,11 mmol), sequentially adding the compounds 1-1 (2.7 g,11 mmol) into a 250mL three-neck flask, adding 100mL of dichloromethane and 40mL of ethanol, pumping and charging nitrogen three times, heating to 60 ℃ for reaction overnight, and distilling under reduced pressure to remove redundant solvent after the reaction is finished, wherein the eluent is PE (PE: DCM=3:1) (volume ratio) to obtain about 4.3g of the compound 1, and the yield: 42.3%. Ms 924.11
Example 2: synthesis of Compound 7
Synthesis of Compound 7:
Accurately weighing compounds 1-3 (9 g,11 mmol), sequentially adding 2-phenylpyridine (1.7 g,11 mmol) into a 250mL three-neck flask, adding 100mL of dichloromethane and 40mL of ethanol, pumping and charging nitrogen three times, heating to 60 ℃ for reaction overnight, removing redundant solvent by reduced pressure distillation after the reaction is finished, and obtaining about 3.3g of compound 7 by adopting a eluent of PE (polyethylene) DCM=3:1 (volume ratio), wherein the yield is: 36.0%. Ms 834.01
Example 3: synthesis of Compound 12
Synthesis of Compound 3-1:
the compound 1-naphthalene boric acid (17.2 g,100 mmol), 2-bromopyridine (15.8 g,100 mmol), and tetrakis triphenylphosphine palladium (3.5 g,3 mmol) were weighed accurately, potassium carbonate (27.6 g,200 mmol) was added sequentially to a 1000mL three-necked flask, toluene was added in an amount of about 400mL, water was added in an amount of 80mL, and after three times of nitrogen filling was performed, the temperature was raised to 90℃for reaction for 6 hours. Cooling to room temperature after the raw materials react completely, adding water for dilution, separating liquid, removing ethyl acetate for three times, drying the combined organic phase anhydrous sodium sulfate, and distilling under reduced pressure to remove redundant solvent, wherein the silica gel is subjected to column chromatography, and the eluent is PE, wherein EA=10: 1 (volume ratio) gives compound 3-1 about 15.6g, yield: 76%. Ms 206.36 Synthesis of Compound 12:
Accurately weighing 1-3 (9 g,11 mmol) of a compound, 3-1 (2.3 g,11 mmol) and sequentially adding the compound into a 250mL three-necked flask, adding 100mL of dichloromethane and 40mL of ethanol, pumping and charging nitrogen three times, heating to 60 ℃ for reaction overnight, and distilling under reduced pressure to remove redundant solvent after the reaction is finished, wherein the eluent is PE (polyethylene) DCM=3:1 (volume ratio) to obtain about 3.6g of a compound 12, and the yield: 38.7%. Ms 884.12
Example 4: synthesis of Compound 26
Synthesis of Compound 4-1:
Accurately weighing compound A (25.4 g,100 mmol), 2-bromopyridine (15.8 g,100 mmol), and tetraphenylphosphine palladium (3.5 g,3 mmol), adding potassium carbonate (27.6 g,200 mmol) into a 1000mL three-necked flask in sequence, adding about 500mL of toluene and 100mL of water, pumping nitrogen three times, and heating to 90 ℃ for reaction for 6 hours. Cooling to room temperature after the raw materials react completely, adding water for dilution, separating liquid, removing ethyl acetate for three times, drying the combined organic phase anhydrous sodium sulfate, and distilling under reduced pressure to remove redundant solvent, wherein the silica gel is subjected to column chromatography, and the eluent is PE, wherein EA=10: 1 gives compound 4-1 about 21.6g, yield: 75.2%. Ms 288.43
Synthesis of Compound 26:
accurately weighing 1-3 (9 g,11 mmol) of compound, 4-1 (3.2 g,11 mmol) and sequentially adding into a 250mL three-neck flask, adding 100mL of dichloromethane and 40mL of ethanol, pumping nitrogen gas three times, heating to 60 ℃ for reaction overnight, removing redundant solvent by reduced pressure distillation after the reaction is finished, and performing silica gel sample mixing column chromatography, wherein the eluent is PE (PE: DCM=3:1) to obtain about 4.1g of compound 26, and the yield: 38.6.ms 966.16
Example 5: synthesis of Compound 55
Synthesis of Compound 5-1:
accurately weighing compound 2-phenylpyridine (15.5 g,100 mmol) and adding into a 500mL three-necked flask, adding iridium trichloride monohydrate (9.5 g,30 mmol), adding 200mL of ethylene glycol diethyl ether, pumping nitrogen gas three times, heating to 120 ℃ for reaction for 12 hours, cooling the reaction solution to room temperature, pumping filtration, leaching a filter cake with petroleum ether for several times, and obtaining a crude product of the compound 5-1 of about 15.1g. Yield: 93.2%
Synthesis of Compound 5-2:
Accurately weighing compound 5-1 (15 g,14 mmol) silver triflate (3.6 g,14 mmol), adding into a 250mL three-neck flask, adding 100mL of dichloromethane and 40mL of methanol, pumping nitrogen three times, and heating to 60 ℃ for reaction for 12 hours. And cooling to room temperature after the reaction is finished, removing redundant solvent by reduced pressure distillation, washing the crude product with water and then washing with petroleum ether for three times. The solids were spun-dried to give crude product 5-2 about 11.3g. Yield: 72.4%
Synthesis of Compound 55:
Accurately weighing compound 5-2 (11.3 g,11 mmol), sequentially adding compound 1-1 (2.7 g,11 mmol) into a 250mL three-neck flask, adding dichloromethane 100mL, ethanol 40mL, pumping nitrogen gas three times, heating to 60 ℃ for reaction overnight, and distilling under reduced pressure to remove redundant solvent after the reaction is finished, wherein the eluent is PE (PE: DCM=3:1) to obtain compound 55 of about 3.3g, and the yield: 40.2%. Ms 744.90
Example 6: synthesis of Compound 58
Synthesis of Compound 6-1:
The benzoquinoline (17.9 g,100 mmol) was accurately weighed and added into a 500mL three-necked flask, iridium trichloride monohydrate (9.5 g,30 mmol) was added, 200mL of ethylene glycol diethyl ether was added, nitrogen was pumped in three times, the temperature was raised to 120 ℃ for reaction for 12 hours, the reaction solution was cooled to room temperature and then filtered by suction, and the filter cake was rinsed several times with petroleum ether to obtain about 15.1g of crude product of the compound 6-1. Yield: 86%
Synthesis of Compound 6-2:
accurately weighing compound 6-1 (15 g,13 mmol) silver triflate (3.3 g,13 mmol), adding into a 250mL three-neck flask, adding 100mL of dichloromethane and 40mL of methanol, pumping nitrogen three times, and heating to 60 ℃ for reaction for 12 hours. And cooling to room temperature after the reaction is finished, removing redundant solvent by reduced pressure distillation, washing the crude product with water and then washing with petroleum ether for three times. The solids were spun-dried to give crude product 6-2 about 11.5g. Yield: 63.3%
Synthesis of Compound 58:
Accurately weighing compound 6-2 (11.5 g,11 mmol), sequentially adding compound 1-1 (2.7 g,11 mmol) into a 250mL three-neck flask, adding dichloromethane 100mL, ethanol 40mL, pumping nitrogen gas three times, heating to 60 ℃ for reaction overnight, and distilling under reduced pressure to remove redundant solvent after the reaction is finished, wherein the eluent is PE (PE: DCM=3:1) to obtain compound 58 with the yield of about 3.6 g: 41.2%. Ms 792.93
Example 7: synthesis of Compound 60
Synthesis of Compound 7-1:
accurately weighing compound 3-1 (20.5 g,100 mmol) and adding into a 500mL three-necked flask, adding iridium trichloride monohydrate (9.5 g,30 mmol), adding 300mL of ethylene glycol diethyl ether, pumping nitrogen gas three times, heating to 120 ℃ for reaction for 12 hours, cooling the reaction solution to room temperature, pumping filtration, leaching the filter cake with petroleum ether for several times, and obtaining about 16.2g of crude product of compound 7-1. Yield: 84.8%
Synthesis of Compound 7-2:
Accurately weighing compound 7-1 (16.2 g,13 mmol) silver triflate (3.3 g,13 mmol), adding into a 250mL three-neck flask, adding 100mL of dichloromethane, 40mL of methanol, pumping nitrogen gas three times, and heating to 60 ℃ for reaction for 12 hours. And cooling to room temperature after the reaction is finished, removing redundant solvent by reduced pressure distillation, washing the crude product with water and then washing with petroleum ether for three times. The solid was spun-dried to give crude 7-2 about 13.3g. Yield: 68.1%
Synthesis of Compound 58:
Accurately weighing compound 7-2 (13.3 g,18 mmol), sequentially adding compound 1-1 (4.4 g,18 mmol) into a 250mL three-neck flask, adding 100mL of dichloromethane and 40mL of ethanol, pumping nitrogen gas three times, heating to 60 ℃ for reaction overnight, and distilling under reduced pressure to remove redundant solvent after the reaction is finished, wherein the eluent is PE (PE: DCM=3:1) to obtain compound 60 with the yield of about 5.6 g: 37.2%. Ms 845.12
Example 8: synthesis of Compound 67
Synthesis of Compound 8-1:
The compound dibenzofuran-4-boronic acid (21.2 g,100 mmol), 2-bromopyridine (15.8 g,100 mmol), tetraphenylphosphine palladium (3.5 g,3 mmol), and potassium carbonate (27.6 g,200 mmol) were weighed into a 1000mL three-necked flask, toluene was added in an amount of about 400mL, water was added in an amount of 80mL, and after three nitrogen-charging cycles, the temperature was raised to 90℃for reaction for 6 hours. Cooling to room temperature after the raw materials react completely, adding water for dilution, separating liquid, removing ethyl acetate for three times, drying the combined organic phase anhydrous sodium sulfate, and distilling under reduced pressure to remove redundant solvent, wherein the silica gel is subjected to column chromatography, and the eluent is PE, wherein EA=10: 1 gives compound 8-1 about 21.1g, yield: 86%. MS 246.41
Synthesis of Compound 8-2:
Accurately weighing compound 8-1 (21 g,86 mmol) and adding into a 500mL three-neck flask, adding iridium trichloride monohydrate (9.5 g,30 mmol), adding 300mL of ethylene glycol diethyl ether, pumping nitrogen gas three times, heating to 120 ℃ for reaction for 12 hours, cooling the reaction solution to room temperature, pumping filtration, and leaching the filter cake with petroleum ether several times to obtain a crude product of compound 8-2 of about 18.3g. Yield: 85.1%
Synthesis of Compound 8-3:
Accurately weighing compound 8-2 (18.3 g,13 mmol) silver triflate (3.3 g,13 mmol), adding into a 250mL three-neck flask, adding 100mL of dichloromethane, 40mL of methanol, pumping nitrogen gas three times, and heating to 60 ℃ for reaction for 12 hours. And cooling to room temperature after the reaction is finished, removing redundant solvent by reduced pressure distillation, washing the crude product with water and then washing with petroleum ether for three times. The solids were spun-dried to give crude 8-3 about 15.9g. Yield: 73.6%
Synthesis of Compound 67:
Accurately weighing compound 8-3 (15.9 g,19 mmol), sequentially adding compound 1-1 (4.7 g,18 mmol) into a 500mL three-neck flask, adding 150mL of dichloromethane and 60mL of ethanol, pumping in nitrogen three times, heating to 60 ℃ for reaction overnight, and after the reaction is finished, distilling under reduced pressure to remove redundant solvent, performing silica gel sample mixing column chromatography, wherein the eluent is PE: DCM=3:1 to obtain compound 67 of about 6.7g, and the yield: 38.1%. Ms 925.16
Preparation and characterization of OLED devices
OLED device structure
The structure of the device is as follows: ITO/HIL (30 nm)/HTL (60 nm)/EBL (10 nm)/EML (40 nm)/ETL (30 nm)/EIL (1 nm)/cathode (100 nm).
Wherein the EML consists of H-Host, E-Host and metal complex, wherein the mass ratio of the H-Host to the E-Host is 6:4, and the doping amount of the metal complex is 10% (w/w) of the total mass of the H-Host and the E-Host. The light emitting layer guest material uses the metal complex (1) or (7) or (12) or (26) or (55) or (58) or (60) or (67) or REF of the embodiment of the present invention. ETL consists of LiQ (8-hydroxyquinoline-lithium) doped with 40% (w/w) ETM.
The OLED device used the following material structure:
Ref synthesis is described in US20070078264A1.
Preparation of OLED device
1) The ITO conductive glass anode layer was cleaned, then ultrasonically cleaned with deionized water, acetone, isopropanol for 15 minutes, and then treated in a plasma cleaner for 5 minutes to increase the work function of the electrode.
2) On the ITO anode layer, a hole injection layer material HIM is evaporated by a vacuum evaporation method, and the thickness is 30nm.
3) On the hole injection layer, a hole transport material HTM was vapor deposited by vacuum vapor deposition to a thickness of 60nm.
4) On the hole transport layer, an electron blocking material EBM was vapor deposited by vacuum vapor deposition to a thickness of 10nm.
5) And evaporating a luminescent layer material on the electron blocking layer by a vacuum evaporation mode, wherein the thickness of the luminescent layer material is 40nm.
6) An electron transport material was deposited on the light-emitting layer by vacuum deposition to a thickness of 30nm.
7) And vacuum evaporating an electron injection layer Liq on the electron transport layer, wherein the thickness of the electron injection layer Liq is 1nm.
8) And vacuum evaporating a cathode Al layer with the thickness of 100nm on the electron injection layer.
9) Encapsulation the device was encapsulated with an ultraviolet curable resin in a nitrogen glove box.
Wherein: the evaporation rates of the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer and the electron injection layer are as followsThe evaporation rate of the cathode layer is/>The high vacuum was 1X 10 -6 mbar.
Characterization of OLED devices
The current-voltage-luminance (JVL) characteristics of the OLED devices 1 to 8 and OLED-REF are characterized by a characterization apparatus while recording important parameters such as external quantum efficiency and device lifetime. Lt95@1000nits is the time at constant current at which the luminance drops from an initial luminance of 1000nits to 95% of the initial luminance. The relative parameters of the OLED device are shown in the following table:
As can be seen from the above table data, compared with the device made of the OLED-REF metal complex, the external quantum efficiency and the device lifetime of the OLED device are both significantly improved by using the metal complex material provided by the invention as the doping material of the EML (light emitting layer).
The reason for the beneficial effect is inferred to be that the structure of the metal complex provided by the invention contains a benzoisoquinoline group to replace, so that charge transmission in the device is assisted, and the charge can be effectively used, thereby improving the luminous efficiency of the device, reducing the starting voltage and prolonging the service life of the device.
If the invention is further optimized, such as optimizing the structure of the device and optimizing the combination of the HTM, the ETM and the main material, the performance, particularly the efficiency, the driving voltage and the service life of the device are further improved.
The technical features of the above-described embodiments and examples may be combined in any suitable manner, and for brevity of description, all of the possible combinations of the technical features of the above-described embodiments and examples are not described, however, as long as there is no contradiction between the combinations of the technical features, they should be considered to be within the scope described in the present specification.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (7)
1. A metal complex characterized in that: as shown in the general formula (I):
Wherein;
l is independently selected from the following structures for each occurrence:
Selected from the following general structures:
Wherein:
R 6 is independently selected from-H, -D, a straight chain alkyl group having 1-10 carbon atoms, a branched alkyl group having 3-10 carbon atoms, or a combination of these groups for each occurrence;
n 1 is independently selected from 0, 1,2,3, or 4;
n 2 is independently selected from 0, 1,2, 3,4, 5, 6, 7, or 8;
n 3 is independently selected from 0,1,2, 3, 4, 5, or 6;
* Represents a ligation site;
m is selected from 1, 2 or 3;
X is independently selected from CR 2 for each occurrence;
Each occurrence of R 1、R2 is independently selected from: -H, -D, a linear alkyl group having 1 to 10C atoms, a branched alkyl group having 3 to 10C atoms;
n is selected from 0.
2. A metal complex according to claim 1, characterized in that: r 2 is independently selected from-H or-D.
3. A metal complex according to claim 1, characterized in that: r 6 is independently selected from-H, -D, methyl, ethyl, n-propyl, isopropyl, n-butyl or tert-butyl for each occurrence.
4. A metal complex according to claim 1, characterized in that: a compound selected from the group consisting of:
5. A mixture characterized by: the mixture comprising the metal complex according to any one of claims 1 to 4 and at least one further organic functional material, wherein at least the further organic functional material is selected from the group consisting of a hole injection material, a hole transport material, an electron injection material, an electron blocking material, a hole blocking material, a luminescent guest material, a luminescent host material or an organic dye.
6. A composition characterized by: comprising the metal complex of any one of claims 1 to 4 or the mixture of claim 5, and at least one organic solvent.
7. An organic electronic device comprising at least one functional layer, characterized in that: the functional layer comprises the metal complex of any one of claims 1-4 or the mixture of claim 5, or is prepared from the composition of claim 6.
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