CN114478637B - Compound containing 1, 3-diketone ligand, application thereof and organic electroluminescent device - Google Patents
Compound containing 1, 3-diketone ligand, application thereof and organic electroluminescent device Download PDFInfo
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- CN114478637B CN114478637B CN202110522974.6A CN202110522974A CN114478637B CN 114478637 B CN114478637 B CN 114478637B CN 202110522974 A CN202110522974 A CN 202110522974A CN 114478637 B CN114478637 B CN 114478637B
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 148
- 239000003446 ligand Substances 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 67
- 229910052739 hydrogen Inorganic materials 0.000 claims description 94
- 229910052757 nitrogen Inorganic materials 0.000 claims description 89
- 125000000217 alkyl group Chemical group 0.000 claims description 61
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 37
- 229910052799 carbon Inorganic materials 0.000 claims description 24
- 125000001624 naphthyl group Chemical group 0.000 claims description 24
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical group C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 claims description 20
- FCEHBMOGCRZNNI-UHFFFAOYSA-N 1-benzothiophene Chemical group C1=CC=C2SC=CC2=C1 FCEHBMOGCRZNNI-UHFFFAOYSA-N 0.000 claims description 20
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 125000001424 substituent group Chemical group 0.000 claims description 16
- 125000003118 aryl group Chemical group 0.000 claims description 15
- 125000001041 indolyl group Chemical group 0.000 claims description 13
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 claims description 12
- 125000000355 1,3-benzoxazolyl group Chemical group O1C(=NC2=C1C=CC=C2)* 0.000 claims description 11
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical group C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 claims description 11
- 230000000903 blocking effect Effects 0.000 claims description 10
- 230000005525 hole transport Effects 0.000 claims description 9
- SURCGQGDUADKBL-UHFFFAOYSA-N 2-(2-hydroxyethylamino)-5-nitrobenzo[de]isoquinoline-1,3-dione Chemical compound [O-][N+](=O)C1=CC(C(N(NCCO)C2=O)=O)=C3C2=CC=CC3=C1 SURCGQGDUADKBL-UHFFFAOYSA-N 0.000 claims description 8
- 125000002943 quinolinyl group Chemical group N1=C(C=CC2=CC=CC=C12)* 0.000 claims description 6
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 5
- 125000002183 isoquinolinyl group Chemical group C1(=NC=CC2=CC=CC=C12)* 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- SNOOUWRIMMFWNE-UHFFFAOYSA-M sodium;6-[(3,4,5-trimethoxybenzoyl)amino]hexanoate Chemical compound [Na+].COC1=CC(C(=O)NCCCCCC([O-])=O)=CC(OC)=C1OC SNOOUWRIMMFWNE-UHFFFAOYSA-M 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 abstract description 36
- 230000015572 biosynthetic process Effects 0.000 abstract description 35
- 230000000171 quenching effect Effects 0.000 abstract description 7
- 238000010791 quenching Methods 0.000 abstract description 6
- 238000000746 purification Methods 0.000 abstract description 2
- 239000000543 intermediate Substances 0.000 description 53
- 239000010410 layer Substances 0.000 description 48
- 238000000921 elemental analysis Methods 0.000 description 38
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 36
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 34
- 238000005259 measurement Methods 0.000 description 32
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 29
- 125000004432 carbon atom Chemical group C* 0.000 description 26
- 238000002360 preparation method Methods 0.000 description 26
- -1 C 3 Cycloalkyl radicals Chemical class 0.000 description 24
- 238000001704 evaporation Methods 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 239000007787 solid Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 17
- 238000010992 reflux Methods 0.000 description 16
- 229920006395 saturated elastomer Polymers 0.000 description 16
- GVNVAWHJIKLAGL-UHFFFAOYSA-N 2-(cyclohexen-1-yl)cyclohexan-1-one Chemical compound O=C1CCCCC1C1=CCCCC1 GVNVAWHJIKLAGL-UHFFFAOYSA-N 0.000 description 15
- 101150065749 Churc1 gene Proteins 0.000 description 15
- 102100038239 Protein Churchill Human genes 0.000 description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000004440 column chromatography Methods 0.000 description 13
- 239000012043 crude product Substances 0.000 description 12
- 230000008020 evaporation Effects 0.000 description 12
- YRTCKZIKGWZNCU-UHFFFAOYSA-N furo[3,2-b]pyridine Chemical group C1=CC=C2OC=CC2=N1 YRTCKZIKGWZNCU-UHFFFAOYSA-N 0.000 description 12
- 125000002883 imidazolyl group Chemical group 0.000 description 12
- 239000003208 petroleum Substances 0.000 description 12
- DBDCNCCRPKTRSD-UHFFFAOYSA-N thieno[3,2-b]pyridine Chemical group C1=CC=C2SC=CC2=N1 DBDCNCCRPKTRSD-UHFFFAOYSA-N 0.000 description 12
- TZPAYMQNBLEXRF-UHFFFAOYSA-N C1=CC(NC2=C3C=CC4=C2C=CC=N4)=C3N=C1 Chemical group C1=CC(NC2=C3C=CC4=C2C=CC=N4)=C3N=C1 TZPAYMQNBLEXRF-UHFFFAOYSA-N 0.000 description 10
- RWRDLPDLKQPQOW-UHFFFAOYSA-N Pyrrolidine Chemical group C1CCNC1 RWRDLPDLKQPQOW-UHFFFAOYSA-N 0.000 description 10
- FBVBNCGJVKIEHH-UHFFFAOYSA-N [1]benzofuro[3,2-b]pyridine Chemical group C1=CN=C2C3=CC=CC=C3OC2=C1 FBVBNCGJVKIEHH-UHFFFAOYSA-N 0.000 description 10
- WIUZHVZUGQDRHZ-UHFFFAOYSA-N [1]benzothiolo[3,2-b]pyridine Chemical group C1=CN=C2C3=CC=CC=C3SC2=C1 WIUZHVZUGQDRHZ-UHFFFAOYSA-N 0.000 description 10
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical group C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 10
- IYYZUPMFVPLQIF-ALWQSETLSA-N dibenzothiophene Chemical group C1=CC=CC=2[34S]C3=C(C=21)C=CC=C3 IYYZUPMFVPLQIF-ALWQSETLSA-N 0.000 description 10
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical group C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 10
- 239000008367 deionised water Substances 0.000 description 9
- 229910021641 deionized water Inorganic materials 0.000 description 9
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 150000002537 isoquinolines Chemical group 0.000 description 8
- 150000003248 quinolines Chemical group 0.000 description 8
- 239000000758 substrate Substances 0.000 description 8
- ORCVNQIKKDETER-UHFFFAOYSA-N 12,17-diazatetracyclo[8.7.0.02,7.011,16]heptadeca-1(10),2,4,6,8,11(16),12,14-octaene Chemical group N1C2=CC=CN=C2C2=C1C1=CC=CC=C1C=C2 ORCVNQIKKDETER-UHFFFAOYSA-N 0.000 description 7
- 229940093475 2-ethoxyethanol Drugs 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 229910021638 Iridium(III) chloride Inorganic materials 0.000 description 6
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 6
- 238000004949 mass spectrometry Methods 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- DANYXEHCMQHDNX-UHFFFAOYSA-K trichloroiridium Chemical compound Cl[Ir](Cl)Cl DANYXEHCMQHDNX-UHFFFAOYSA-K 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 5
- 239000007858 starting material Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- 238000010549 co-Evaporation Methods 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- ZCSHNCUQKCANBX-UHFFFAOYSA-N lithium diisopropylamide Chemical compound [Li+].CC(C)[N-]C(C)C ZCSHNCUQKCANBX-UHFFFAOYSA-N 0.000 description 4
- 239000005051 trimethylchlorosilane Substances 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZHZUVSMBINNEAL-UHFFFAOYSA-N N1C(C2=CC=CC=C2C=C2)=C2C=C1C1=CC=CC=N1 Chemical group N1C(C2=CC=CC=C2C=C2)=C2C=C1C1=CC=CC=N1 ZHZUVSMBINNEAL-UHFFFAOYSA-N 0.000 description 3
- 239000010405 anode material Substances 0.000 description 3
- 125000005428 anthryl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C3C(*)=C([H])C([H])=C([H])C3=C([H])C2=C1[H] 0.000 description 3
- 150000004982 aromatic amines Chemical class 0.000 description 3
- 235000010290 biphenyl Nutrition 0.000 description 3
- 239000004305 biphenyl Substances 0.000 description 3
- 238000005401 electroluminescence Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 125000005561 phenanthryl group Chemical group 0.000 description 3
- 125000001725 pyrenyl group Chemical group 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 2
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 2
- FSEXLNMNADBYJU-UHFFFAOYSA-N 2-phenylquinoline Chemical compound C1=CC=CC=C1C1=CC=C(C=CC=C2)C2=N1 FSEXLNMNADBYJU-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical class [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 150000001454 anthracenes Chemical class 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 125000004196 benzothienyl group Chemical group S1C(=CC2=C1C=CC=C2)* 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- ILAHWRKJUDSMFH-UHFFFAOYSA-N boron tribromide Chemical compound BrB(Br)Br ILAHWRKJUDSMFH-UHFFFAOYSA-N 0.000 description 2
- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 2
- 125000004623 carbolinyl group Chemical group 0.000 description 2
- 239000010406 cathode material Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 description 2
- FWFSEYBSWVRWGL-UHFFFAOYSA-N cyclohex-2-enone Chemical compound O=C1CCCC=C1 FWFSEYBSWVRWGL-UHFFFAOYSA-N 0.000 description 2
- 229910052805 deuterium Inorganic materials 0.000 description 2
- DKHNGUNXLDCATP-UHFFFAOYSA-N dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile Chemical compound C12=NC(C#N)=C(C#N)N=C2C2=NC(C#N)=C(C#N)N=C2C2=C1N=C(C#N)C(C#N)=N2 DKHNGUNXLDCATP-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 125000002541 furyl group Chemical group 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000005041 phenanthrolines Chemical class 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 2
- 125000003373 pyrazinyl group Chemical group 0.000 description 2
- 125000002098 pyridazinyl group Chemical group 0.000 description 2
- 125000004076 pyridyl group Chemical group 0.000 description 2
- 125000000714 pyrimidinyl group Chemical group 0.000 description 2
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 2
- 125000001567 quinoxalinyl group Chemical group N1=C(C=NC2=CC=CC=C12)* 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009210 therapy by ultrasound Methods 0.000 description 2
- 125000000335 thiazolyl group Chemical group 0.000 description 2
- 125000001544 thienyl group Chemical group 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
- 125000004306 triazinyl group Chemical group 0.000 description 2
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 description 1
- 125000006732 (C1-C15) alkyl group Chemical group 0.000 description 1
- 125000003837 (C1-C20) alkyl group Chemical group 0.000 description 1
- 125000006701 (C1-C7) alkyl group Chemical group 0.000 description 1
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 description 1
- APQIUTYORBAGEZ-UHFFFAOYSA-N 1,1-dibromoethane Chemical compound CC(Br)Br APQIUTYORBAGEZ-UHFFFAOYSA-N 0.000 description 1
- XYUORYRNDCCNPG-UHFFFAOYSA-N 1-(3,5-dimethylphenyl)-6-propan-2-ylisoquinoline Chemical compound CC=1C=C(C=C(C=1)C)C1=NC=CC2=CC(=CC=C12)C(C)C XYUORYRNDCCNPG-UHFFFAOYSA-N 0.000 description 1
- NRSBAUDUBWMTGL-UHFFFAOYSA-N 2-(1-benzothiophen-2-yl)pyridine Chemical compound S1C2=CC=CC=C2C=C1C1=CC=CC=N1 NRSBAUDUBWMTGL-UHFFFAOYSA-N 0.000 description 1
- XNAMZBCMLZQBIC-UHFFFAOYSA-N 2-[2-[4-[5-[(1-ethylpyrazol-3-yl)amino]triazolo[4,5-d]pyrimidin-1-yl]phenyl]propan-2-yloxy]ethanol Chemical compound CCN1C=CC(NC=2N=C3N=NN(C3=CN=2)C=2C=CC(=CC=2)C(C)(C)OCCO)=N1 XNAMZBCMLZQBIC-UHFFFAOYSA-N 0.000 description 1
- WXLFOFRDXHNZFG-UHFFFAOYSA-N 2-methyl-5-phenylquinoline Chemical compound C=1C=CC2=NC(C)=CC=C2C=1C1=CC=CC=C1 WXLFOFRDXHNZFG-UHFFFAOYSA-N 0.000 description 1
- FIISKTXZUZBTRC-UHFFFAOYSA-N 2-phenyl-1,3-benzoxazole Chemical compound C1=CC=CC=C1C1=NC2=CC=CC=C2O1 FIISKTXZUZBTRC-UHFFFAOYSA-N 0.000 description 1
- DMEVMYSQZPJFOK-UHFFFAOYSA-N 3,4,5,6,9,10-hexazatetracyclo[12.4.0.02,7.08,13]octadeca-1(18),2(7),3,5,8(13),9,11,14,16-nonaene Chemical class N1=NN=C2C3=CC=CC=C3C3=CC=NN=C3C2=N1 DMEVMYSQZPJFOK-UHFFFAOYSA-N 0.000 description 1
- SYBYTAAJFKOIEJ-UHFFFAOYSA-N 3-Methylbutan-2-one Chemical compound CC(C)C(C)=O SYBYTAAJFKOIEJ-UHFFFAOYSA-N 0.000 description 1
- ZISGLVMVAWKGRE-UHFFFAOYSA-N C1=CC=CC=2C3=CC=CC=C3NC12.N1=NN=CC=C1 Chemical class C1=CC=CC=2C3=CC=CC=C3NC12.N1=NN=CC=C1 ZISGLVMVAWKGRE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- 229910010082 LiAlH Inorganic materials 0.000 description 1
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical class [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229940058303 antinematodal benzimidazole derivative Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 150000005840 aryl radicals Chemical class 0.000 description 1
- 125000000499 benzofuranyl group Chemical group O1C(=CC2=C1C=CC=C2)* 0.000 description 1
- 125000004618 benzofuryl group Chemical group O1C(=CC2=C1C=CC=C2)* 0.000 description 1
- 150000001716 carbazoles Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 125000004987 dibenzofuryl group Chemical group C1(=CC=CC=2OC3=C(C21)C=CC=C3)* 0.000 description 1
- 125000004988 dibenzothienyl group Chemical group C1(=CC=CC=2SC3=C(C21)C=CC=C3)* 0.000 description 1
- 125000005509 dibenzothiophenyl group Chemical group 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- RLZFVPPGVAHZPE-UHFFFAOYSA-N ethyl 4-iodobutanoate Chemical compound CCOC(=O)CCCI RLZFVPPGVAHZPE-UHFFFAOYSA-N 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000009289 huang-lien-chieh-tu-tang Substances 0.000 description 1
- VVVPGLRKXQSQSZ-UHFFFAOYSA-N indolo[3,2-c]carbazole Chemical class C1=CC=CC2=NC3=C4C5=CC=CC=C5N=C4C=CC3=C21 VVVPGLRKXQSQSZ-UHFFFAOYSA-N 0.000 description 1
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 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
- 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
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 150000004033 porphyrin derivatives Chemical class 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002390 rotary evaporation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- SLGBZMMZGDRARJ-UHFFFAOYSA-N triphenylene Chemical class C1=CC=C2C3=CC=CC=C3C3=CC=CC=C3C2=C1 SLGBZMMZGDRARJ-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
- H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
- C09K2211/18—Metal complexes
- C09K2211/185—Metal complexes of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Electroluminescent Light Sources (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
The invention relates to the field of organic electroluminescent devices, and discloses a compound containing a 1, 3-diketone ligand, application thereof and an organic electroluminescent device. The compound has Ir (L) A )(L B ) 2 The structure shown, L A Has a structure shown in formula (IA), L B Is of the structure shown in formula (IB), L B310 The structure shown, L B311 The structure shown, L B312 The structure shown, L B313 The structure shown or L B314 The structure shown. The compound containing the 1, 3-diketone ligand has the advantages of small synthesis difficulty and easy purification, and has excellent luminescent performance as an organic electrophosphorescent material, can prolong the service life of a device, can increase the solubility of the phosphorescent material, and can reduce the probability of triplet state-triplet state quenching.
Description
Technical Field
The invention relates to the field of organic electroluminescent devices, in particular to a compound containing a 1, 3-diketone ligand, application of the compound and an organic electroluminescent device.
Background
Compared with the traditional liquid crystal technology, the organic electroluminescence technology does not need backlight source irradiation and color filters, pixels can emit light to be displayed on a color display plate, and the organic electroluminescence technology has the characteristics of ultrahigh contrast, ultra-wide visible angle, curved surface, thinness and the like.
Deng Qingyun from Kodak et al in 1987 reported that the research of organic electroluminescent materials was promoted based on two organic semiconductor materials, namely 8-hydroxyquinoline aluminum which has high fluorescence efficiency and good electron transport property and aromatic diamine which has good hole transport property.
In 1997, the professor Forrest of the university of us prington, et al discovered a phosphorescence electroluminescence phenomenon, which increased the internal quantum efficiency of the organic electroluminescent device from the limit of 25% of the fluorescent material to 100%, and led to a new period of research of the organic electroluminescent material. The phosphorescent material is a transition metal complex doped with small molecules, and the triplet excitons obtain high emission energy by utilizing the spin-orbit coupling effect caused by heavy metal atoms, so that the quantum efficiency of the organic electroluminescent device is improved, and the metal complex is a phosphorescent material with relatively short excited state service life, high luminous quantum efficiency, excellent luminous color adjustability and good stability.
The fluorescent material has low excitation energy, and the energy is easy to lose in a non-radiative mode in the excitation process, so that the fluorescent material with high fluorescence efficiency and good chromaticity is rare, the better luminescent material is mainly a phosphorescent material, the phosphorescent material applied to the organic electroluminescent device at present is easy to generate aggregation quenching phenomenon under high concentration, and the phenomenon that the device efficiency is reduced due to the fact that the triplet state-triplet state is obviously quenched exists in the high-brightness device. To cope with the increasing demands of device performance, it is of great significance to develop phosphorescent materials with weaker aggregation quenching effects.
Disclosure of Invention
The invention aims to solve the problems of large efficiency roll-off and low luminous efficiency of the traditional organic electroluminescent device.
In order to achieve the above object, a first aspect of the present invention provides a 1, 3-dione ligand-containing compound having Ir (L A )(L B ) 2 A structure is shown in which L A Has a structure shown in formula (IA), L B Is of the structure shown in formula (IB), L B310 The structure shown, L B311 The structure shown, L B312 The structure shown, L B313 The structure shown or L B314 The structure shown;
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 20 Alkyl, C of (2) 6- C 20 Aryl of (a); or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring;
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 20 Alkyl, C of (2) 6- C 20 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of them are combined together to form a benzene ring selected from substituted or unsubstituted benzene ring, substituted or unsubstituted benzene ringAt least one ring structure of a substituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted pyridothiophene ring;
and optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1- C 10 At least one of an alkyl group and a phenyl group.
A second aspect of the present invention provides the use of a compound comprising a 1, 3-dione ligand as described in the first aspect above as an organic electrophosphorescent material.
A third aspect of the present invention provides an organic electroluminescent device comprising at least one of the compounds comprising a 1, 3-diketone ligand according to the first aspect.
The invention has the following specific advantages:
(1) The compound containing the 1, 3-diketone ligand has the advantages of small synthesis difficulty and easy purification, and can improve the phosphorescence quantum efficiency of the phosphorescence material when being used as an organic electrophosphorescent material, thereby having excellent luminescence performance;
(2) When the compound containing the 1, 3-diketone ligand is used as an organic electrophosphorescent material, the concentration quenching phenomenon specific to the phosphorescent material can be reduced, the thermal stability of the phosphorescent material can be improved, and the service life of a device can be prolonged;
(3) When the compound containing the 1, 3-diketone ligand is used as an organic electrophosphorescent material, the probability of triplet state-triplet state quenching can be reduced, and the luminous efficiency of the device is further improved.
Detailed Description
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
In the present invention, unless otherwise stated, the terms of the present invention are explained as follows:
C 1- C 20 alkyl groups of 1 to 20 in total carbon atoms, including straight chain alkyl groups, branched chain alkyl groups and cycloalkyl groups, such as may be straight chain alkyl groups, branched chain alkyl groups and cycloalkyl groups of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 in total carbon atoms, such as may be methyl, ethyl, n-propyl, isopropyl, cyclopropyl, cyclobutyl, n-butyl, CH 3 CH(CH 3 )-CH 2 -、CH 3 CH 2 CH(CH 3 ) -, t-butyl, n-pentyl, CH 3 CH(CH 3 )-CH 2 CH 2 -, cyclopentyl, n-hexyl, cyclohexyl, n-heptyl, and the like. For "C 1- C 15 Alkyl group "," C 1- C 10 Alkyl group "," C 1- C 8 Alkyl group "," C 1- C 7 Alkyl group "," C 1- C 6 Alkyl "and the like of (c) have similar explanations thereto except that the total number of carbon atoms is different.
C 6- C 20 And (2) represents an aryl group having a total of 6 to 20 carbon atoms and the aryl group is directly linked to C of the parent nucleus structure provided by the present invention, including, but not limited to, phenyl, biphenyl, naphthyl, anthryl, phenanthryl, pyrenyl, etc. For "C 6- C 15 Aryl radicals "," C 6- C 12 Aryl radicals "," C 6- C 10 Aryl "and the like have similar explanations thereto except that the total number of carbon atoms is different.
R 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring, representing R 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) forms a saturated ring containing 4, 5 or 6 atoms, e.g.
A substituted or unsubstituted benzene ring means that the benzene ring is directly linked to a C atom on the parent nucleus structure provided by the present invention, and any position on the benzene ring that can be substituted. For example, the number of the cells to be processed,x in (2) 1 、X 2 、X 3 、X 4 All can be substituted, the wavy line indicates the connection position, i.e. the group is connected with the parent nucleus structure through a chemical bond at the position of the wavy line, and ┄ is a dotted line on the Q ring of formula (IB). The quinoline ring, naphthalene ring, etc. are defined similarly, and the present invention will not be described in detail.
A substituted or unsubstituted quinoline ring means that the quinoline ring is directly attached to a C atom on the parent structure provided by the present invention, and any position on the quinoline ring that can be substituted.
A substituted or unsubstituted isoquinoline ring means that the isoquinoline ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the isoquinoline ring that can be substituted.
A substituted or unsubstituted naphthalene ring means that the naphthalene ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the naphthalene ring that can be substituted.
A substituted or unsubstituted phenanthrene ring means that the phenanthrene ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the phenanthrene ring that can be substituted.
A substituted or unsubstituted benzothiophene ring means that the benzothiophene ring is directly attached to a C atom on the parent nucleus structure provided by the present invention and any position on the benzothiophene ring that can be substituted.
A substituted or unsubstituted benzofuran ring means that the benzofuran ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the benzofuran ring that can be substituted.
A substituted or unsubstituted indole ring means that the indole ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the indole ring that can be substituted.
A substituted or unsubstituted benzothiazole ring means that the benzothiazole ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the benzothiazole ring that can be substituted.
A substituted or unsubstituted benzoxazole ring means that the benzoxazole ring is directly attached to a C atom on the parent nucleus structure provided by the invention, and any position on the benzoxazole ring that can be substituted.
A substituted or unsubstituted benzimidazole ring means that the benzimidazole ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the benzimidazole ring that can be substituted.
A substituted or unsubstituted dibenzothiophene ring means that the dibenzothiophene ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the dibenzothiophene ring that can be substituted.
A substituted or unsubstituted dibenzofuran ring means that the dibenzofuran ring is directly linked to a C atom on the parent nucleus structure provided by the present invention, and any position on the dibenzofuran ring that can be substituted.
A substituted or unsubstituted benzofuropyridine ring, meaning that the benzofuropyridine ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on said benzofuropyridine ring that can be substituted may be substituted.
A substituted or unsubstituted benzothiophenopyridine ring, meaning that the benzothiophenopyridine ring is attached directly to a C atom on the parent nucleus structure provided by the present invention, and any position on the benzothiophenopyridine ring which can be substituted may be substituted.
A substituted or unsubstituted benzindolylpyridine ring, meaning that the benzindolylpyridine ring is directly attached to a C atom on the parent nucleus structure provided by the invention, and any position on the benzindolylpyridine ring that can be substituted.
A substituted or unsubstituted pyridoindolopyridine ring means that the pyridoindolopyridine is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on said pyridoindolopyridine which can be substituted may be substituted.
A substituted or unsubstituted imidazole ring means that the imidazole ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the imidazole ring that can be substituted.
A substituted or unsubstituted pyrrolidine ring means that the pyrrolidine ring is directly attached to a C atom on the parent nucleus structure provided by the invention, and any position on the pyrrolidine ring that can be substituted.
A substituted or unsubstituted pyridofuran ring means that the pyridofuran ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the pyridofuran ring that can be substituted.
A substituted or unsubstituted pyridothiophene ring means that the pyridothiophene ring is directly attached to a C atom on the parent nucleus structure provided by the present invention, and any position on the pyridothiophene ring that can be substituted.
C 3 Is CH 3 CH 2 CH 2 -，C 3 Branched alkyl of (2) is CH 3 CH(CH 3 )-，C 3 Cycloalkyl radicals of (2) are
C 4 Is CH 3 CH 2 CH 2 CH 2 -，C 4 Branched alkyl of (2) may be CH 3 CH(CH 3 )-CH 2 -、CH 3 CH 2 -CH(CH 3 ) -or (CH) 3 ) 3 C-，C 4 Cycloalkyl radicals of (2) are
C 5 Is CH 3 CH 2 CH 2 CH 2 CH 2 -，C 5 Branched alkyl of (2) may be CH 3 CH 2 CH(CH 3 )-CH 2 -、(CH 3 ) 2 CH-CH 2 CH 2 -、(CH 3 ) 3 C-CH 2 -、CH 3 CH(CH 3 )CH(CH 3 )-、(CH 3 ) 3 C-CH 2 -，C 5 Cycloalkyl radicals of (2) are
C 6 Is CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 -，C 6 Branched alkyl of (2) may be CH 3 CH 2 CH 2 CH(CH 3 )CH 2 -、(CH 3 ) 2 C(CH 2 CH 2 CH 3 )-、(CH 3 ) 2 CHCH(CH 2 CH 3 )-、(CH 3 ) 2 CHCH 2 CH(CH 3 )-、(CH 3 ) 2 CHCH 2 CH 2 CH 2 -、CH 3 CH 2 CH(CH 3 )CH 2 CH 2 -、CH 3 CH 2 CH(CH 3 )CH(CH 3 )-、(CH 3 CH 2 ) 2 C(CH 3 )-、CH 3 CH(CH 3 )CH(CH 3 )CH 2 -、(CH 3 CH 2 ) 2 CHCH 2 -、(CH 3 ) 2 CHC(CH 3 ) 2 -，C 6 Cycloalkyl radicals of (2) are
C 7 Is CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 -，C 7 Branched alkyl of (2) may be CH 3 CH 2 CH 2 CH 2 CH(CH 3 )CH 2 -、(CH 3 ) 2 CHCH 2 CH 2 CH 2 CH 2 -、(CH 3 ) 2 C(CH 2 CH 2 CH 2 CH 3 )-、(CH 3 ) 2 CHCH(CH 2 CH 2 CH 3 )-、(CH 3 ) 2 CHCH 2 CH(CH 2 CH 3 )-、(CH 3 ) 2 CHCH 2 CH 2 CH(CH 3 )-、CH 3 CH 2 CH 2 CH(CH 3 )CH 2 CH 2 -、CH 3 CH 2 CH(CH 3 )CH 2 CH 2 CH 2 -、CH 3 CH 2 CH 2 CH(CH 3 )CH(CH 3 )-、CH 3 CH 2 CH 2 C(CH 3 )(CH 2 CH 3 )-、CH 3 CH 2 CH(CH 3 )CH(CH 2 CH 3 )-、CH 3 CH 2 CH(CH 3 )CH 2 CH(CH 3 )-、CH 3 CH 2 CH 2 CHCH 2 (CH 2 CH 3 )-、CH 3 CH 2 CH 2 C(CH 3 ) 2 CH 2 -、(CH 3 ) 3 CCH 2 CH 2 CH 2 -、(CH 3 ) 3 CCH(CH 2 CH 3 )-、(CH 3 ) 3 CCH 2 CH(CH 3 )-、CH 3 CH 2 CH(CH 3 )CH(CH 3 )CH 2 -、(CH 3 ) 2 CHCH(CH 3 )CH 2 CH 2 -、CH 3 CH 2 CH(CH 3 )C(CH 3 ) 2 -、(CH 3 ) 2 CHC(CH 3 )(CH 2 CH 3 )-、(CH 3 ) 2 CHCH(CH 3 )CH(CH 3 )-、(CH 3 ) 2 CHCH(CH 2 CH 3 )CH 2 -、(CH 3 ) 2 CHCH 2 CH(CH 3 )CH 2 -、(CH 3 ) 2 CHCH 2 C(CH 3 ) 2 -、(CH 3 ) 2 CHCH(CH(CH 3 ) 2 )-、CH 3 CH 2 C(CH 3 ) 2 CH 2 CH 2 -、CH 3 CH 2 C(CH 3 ) 2 CH(CH 3 )-、(CH 3 CH 2 ) 2 C(CH 3 )CH 2 -、(CH 3 ) 3 C-CH(CH 3 )CH 2 -、(CH 3 ) 2 CHC(CH 3 ) 2 CH 2 -，C 7 Cycloalkyl radicals of (2) are
"or R 1 、R 2 、R 3 、R 4 Any adjacent two of them are cyclized together to form at least one ring structure "selected from the group consisting of a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring, and a substituted or unsubstituted pyridothiophene ring, and R represents 1 、R 2 、R 3 、R 4 Any adjacent two of them are cyclized together to form at least one ring structure of a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted pyridothiophene ring, and R 1 、R 2 、R 3 、R 4 Any adjacent two of the two groups and the mother nucleus structure share a chemical bond with the mother nucleus structure to form a condensed ring. For example, as
In order to achieve the above object, a first aspect of the present invention provides a 1, 3-dione ligand-containing compound having Ir (L A )(L B ) 2 A structure is shown in which L A Has a structure shown in formula (IA), L B Is of the structure shown in formula (IB), L B310 The structure shown, L B311 The structure shown, L B312 The structure shown, L B313 The structure shown or L B314 The structure shown;
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 20 Alkyl, C of (2) 6- C 20 Aryl of (a); or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring;
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 20 Alkyl, C of (2) 6- C 20 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of the above are combined together to form at least one ring structure selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring and a substituted or unsubstituted pyridothiophene ring;
and optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1- C 10 At least one of an alkyl group and a phenyl group.
According to preferred embodiment 1-1In Ir (L) A )(L B ) 2 In the structure shown, L A Has a structure shown in formula (IA), L B Is of the structure shown in formula (IB), L B310 The structure shown, L B311 The structure shown, L B312 The structure shown, L B313 The structure shown or L B314 The structure shown;
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 15 Alkyl, C of (2) 6- C 15 Aryl of (a); or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring;
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 15 Alkyl, C of (2) 6- C 15 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of the above are combined together to form at least one ring structure selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring and a substituted or unsubstituted pyridothiophene ring;
and optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1- C 8 At least one of an alkyl group and a phenyl group.
According to preferred embodiments 1-2In Ir (L) A )(L B ) 2 In the structure shown, L A Has a structure shown in formula (IA), L B Is of the structure shown in formula (IB), L B310 The structure shown, L B311 The structure shown, L B312 The structure shown, L B313 The structure shown or L B314 The structure shown;
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 10 Alkyl, C of (2) 6- C 12 Aryl of (a); or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring;
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 10 Alkyl, C of (2) 6- C 12 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of the above are combined together to form at least one ring structure selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring and a substituted or unsubstituted pyridothiophene ring;
and optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1- C 6 At least one of an alkyl group and a phenyl group.
According to a preferred embodiment, the Ir (L A )(L B ) 2 In the structure shown in the drawing, the first and second parts,
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 7 Alkyl, C of (2) 6- C 10 Aryl of (a); or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring.
According to a particularly preferred embodiment1-3In Ir (L) A )(L B ) 2 In the structure shown in the drawing, the first and second parts,
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 7 Alkyl, C of (2) 6- C 10 Aryl of (a); or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring;
in formula (IB), X is C or N,
The Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 each independently selected from H, C 1- C 10 Alkyl, C of (2) 6- C 12 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of the above are combined together to form at least one ring structure selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring and a substituted or unsubstituted pyridothiophene ring;
And optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above, each independently selected fromC 1- C 6 At least one of an alkyl group and a phenyl group.
According to another preferred embodiment, in the Ir (L) A )(L B ) 2 In the structure shown in the drawing, the first and second parts,
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, methyl, ethyl, C 3 Straight chain alkyl, C 3 Branched alkyl, C 3 Cycloalkyl, C 4 Straight chain alkyl, C 4 Branched alkyl, C 4 Cycloalkyl, C 5 Straight chain alkyl, C 5 Branched alkyl, C 5 Cycloalkyl, C 6 Straight chain alkyl, C 6 Branched alkyl, C 6 Cycloalkyl, C 7 Straight chain alkyl, C 7 Branched alkyl, C 7 Cycloalkyl, phenyl; or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring.
According to particularly preferred embodiments 1 to 4In Ir (L) A )(L B ) 2 In the structure shown in the drawing, the first and second parts,
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, methyl, ethyl, C 3 Straight chain alkyl, C 3 Branched alkyl, C 3 Cycloalkyl, C 4 Straight chain alkyl, C 4 Branched alkyl, C 4 Cycloalkyl, C 5 Straight chain alkyl, C 5 Branched alkyl, C 5 Cycloalkyl, C 6 Straight chain alkyl, C 6 Branched alkyl, C 6 Cycloalkyl, C 7 Straight chain alkyl, C 7 Branched alkyl, C 7 Cycloalkyl, phenyl; or R is 1 And R is R 2 Is a combination of R 3 And R is R 4 At least one of the combinations of (a) is cyclized to form a 4-6 membered saturated ring;
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 each independently selected from H, C 1- C 10 Alkyl, C of (2) 6- C 12 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of the above are combined together to form at least one ring structure selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring and a substituted or unsubstituted pyridothiophene ring;
And optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1- C 6 At least one of an alkyl group and a phenyl group.
According to a preferred embodiment, the Ir (L A )(L B ) 2 L in the illustrated structure A Selected from the structures shown in claim 6.
According to particularly preferred embodiments 1 to 5In Ir (L) A )(L B ) 2 In the structure shown, L A A structure selected from the group shown in claim 6;
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted phenanthrene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring, a substituted or unsubstituted dibenzothiophene ring, a substituted or unsubstituted dibenzofuran ring, a substituted or unsubstituted benzofuropyridine ring, a substituted or unsubstituted benzothiophenopyridine ring, a substituted or unsubstituted benzoindolopyridine ring, a substituted or unsubstituted pyridoindolopyridine ring, a substituted or unsubstituted imidazole ring, and a substituted or unsubstituted pyrrolidine ring;
R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1- C 10 Alkyl, C of (2) 6- C 12 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of the above are combined together to form at least one ring structure selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted pyridofuran ring, a substituted or unsubstituted benzothiophene ring and a substituted or unsubstituted pyridothiophene ring;
and optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1- C 6 At least one of an alkyl group and a phenyl group.
According to another preferred embodiment, in the Ir (L) A )(L B ) 2 In the structure shown, L B Selected from the structures shown in claim 7.
According to a preferred embodiment, the 1, 3-diketone ligand-containing compound is selected from any one of the compounds shown in claim 7.
According to a particularly preferred embodiment1-6, in Ir (L) A )(L B ) 2 In the structure shown, L A A structure selected from the group shown in claim 6; and is also provided with
L B Selected from the structures shown in claim 7.
According to preferred embodiments 1-7, ir (L A )(L B ) 2 The structure shown is selected from the structures shown in claim 8.
The present invention is not particularly limited to the method for preparing a 1, 3-diketone ligand-containing compound described in the aforementioned first aspect, and a person skilled in the art can determine a suitable reaction route according to a known method in the art of structural formula binding organic synthesis. The following of the invention provides by way of example several methods for preparing the 1, 3-dione ligand-containing compounds described in the first aspect above, and the person skilled in the art should not be construed as limiting the invention.
As previously mentioned, the second aspect of the present invention provides the use of a compound comprising a 1, 3-dione ligand as described in the first aspect above as an organic electrophosphorescent material.
As described above, the third aspect of the present invention provides an organic electroluminescent device comprising at least one of the compounds containing a 1, 3-diketone ligand according to the first aspect.
Preferably, the compound containing a 1, 3-diketone ligand is present in the light emitting layer of the organic electroluminescent device.
Further preferably, the compound containing a 1, 3-diketone ligand is a guest material in a light-emitting layer of the organic electroluminescent device.
According to a preferred embodiment, the organic electroluminescent device comprises an anode, a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, an electron injection layer and a cathode.
There are no particular requirements in the present invention for the materials forming the anode, and those skilled in the art can select them in combination with techniques known in the art. In a preferred embodiment of the present invention, the anode material is a material having a large work function.
Preferably, the anode material is at least one selected from vanadium, chromium, copper, gold, aluminum, zinc oxide, indium tin oxide, indium zinc oxide, and tin dioxide.
There is no particular requirement in the present invention that the material forming the hole injection layer be selected by those skilled in the art in combination with techniques known in the art. In a preferred embodiment of the present invention, the hole injection layer material is a material having a work function between the work function of the anode material and the work function of the surrounding organic material.
There is no particular requirement in the present invention that the material forming the hole transport layer be selected by those skilled in the art in combination with techniques known in the art. In a preferred embodiment of the present invention, the hole transport layer is made of a material capable of receiving holes from the anode or the hole injection layer, and moving the holes to the light emitting layer and having a high mobility to the holes.
Illustratively, the hole injecting material and the hole transporting material include, but are not limited to, aromatic amine derivatives (e.g., NPB, sqMA 1), hexaazabenzophenanthrene derivatives (e.g., HACTN), indolocarbazole derivatives, conductive polymers (e.g., PEDOT/PSS), phthalocyanines, porphyrin derivatives, dibenzoindenofluorene amines, spirobifluorene amines, and the like.
According to a particularly preferred embodiment of the present invention, the hole injecting material and the hole transporting material are selected from at least one of the structures having the formula-1, the formula-2, the formula-3, and the formula-4;
wherein the groups R1 to R9 are each independently selected from single bond, hydrogen, deuterium, C 1- C 20 Alkyl, phenyl, biphenyl, terphenyl, naphthyl, anthryl, phenanthryl, benzophenanthryl, pyrenyl, fluorenyl, and dimethylFluorenyl, spirobifluorenyl, carbazolyl, thienyl, benzothienyl, dibenzothienyl, furyl, benzofuryl, dibenzofuryl, indolyl, indolocarbazolyl, indenocarbazolyl, pyridyl, pyrimidinyl, imidazolyl, thiazolyl, quinolinyl, isoquinolinyl, quinoxalinyl, quinazolinyl, porphyrinyl, carbolinyl, pyrazinyl, pyridazinyl, triazinyl.
There are no particular requirements in the present invention for the materials forming the electron blocking layer, and those skilled in the art can select it in combination with techniques known in the art. In a preferred embodiment of the invention, the electron blocking layer material is selected from materials having a shallower LUMO energy level and/or a greater triplet energy.
Illustratively, the electron blocking layer materials include, but are not limited to, aromatic amine derivatives (e.g., NPB), spirobifluorene amines (e.g., spMA 2), and the like.
Optionally, the light emitting layer further comprises a host material. Illustratively, the host material includes, but is not limited to, anthracene derivatives, carbazole derivatives, fluorene derivatives, arylamine derivatives, organosilicon derivatives, carbazole-triazine derivatives, phosphorus oxy derivatives, phenanthroline derivatives, and the like.
Preferably, the anthracene derivative has a structure shown in a formula-5, and the phosphorus oxy derivative has a structure shown in a formula-6;
wherein R is 11 、R 12 、R 13 、R 14 、R 15 And R is 16 Each independently selected from single bond, hydrogen, deuterium, substituted or unsubstituted C 1- C 20 Substituted or unsubstituted phenyl, substituted or unsubstituted biphenyl, substituted or unsubstituted terphenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted anthryl, substituted or unsubstituted phenanthryl, substituted or unsubstituted benzophenanthryl, substituted or unsubstituted pyrenyl, substituted or unsubstituted fluorenyl, substituted Or an unsubstituted dimethylfluorenyl group, a substituted or unsubstituted spirobifluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted thiophenyl group, a substituted or unsubstituted benzothiophenyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted furanyl group, a substituted or unsubstituted benzofuranyl group, a substituted or unsubstituted dibenzofuranyl group, a substituted or unsubstituted indolyl group, a substituted or unsubstituted indolocarbazolyl group, a substituted or unsubstituted indenocarbazolyl group, a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, a substituted or unsubstituted imidazolyl group, a substituted or unsubstituted thiazolyl group, a substituted or unsubstituted quinolinyl group, a substituted or unsubstituted isoquinolinyl group, a substituted or unsubstituted quinoxalinyl group, a substituted or unsubstituted quinazolinyl group, a substituted or unsubstituted porphyrinyl group, a substituted or unsubstituted carbolinyl group, a substituted or unsubstituted pyrazinyl group, a substituted or unsubstituted pyridazinyl group, a substituted or unsubstituted triazinyl group.
Preferably, the guest material is the 1, 3-diketone ligand-containing compound that produces emission via at least one of phosphorescence, fluorescence, TADF (thermally activated delayed fluorescence), MLCT (metal to ligand charge transfer), HLCT (with hybrid CT states), and triplet-triplet annihilation methods.
There are no particular requirements in the present invention for the material forming the hole blocking layer, and those skilled in the art can select it in combination with techniques known in the art. In a preferred embodiment of the present invention, the hole blocking layer material is a material having a shallower LUMO energy level and/or a greater triplet energy level.
Illustratively, the hole blocking layer material includes, but is not limited to, phenanthroline derivatives (e.g., bphen, BCP), benzophenanthrene derivatives, benzimidazole derivatives, and the like.
There is no particular requirement in the present invention that the electron injection layer be formed of a material that can be selected by those skilled in the art in combination with techniques known in the art. Illustratively, the electron injection layer material includes, but is not limited to LiF, csF, cs 2 CO 3 。
There are no particular requirements in the present invention for the materials forming the cathode, and those skilled in the art can choose them in combination with techniques known in the art. The invention provides a preferred embodiment wherein the cathode material is a material having a relatively small work function.
Preferably, the cathode material is selected from at least one of Al, mg, and Ag.
The invention will be described in detail below by way of examples.
In the present invention, room temperature is represented as 25.+ -. 2 ℃ unless otherwise specified.
Wherein, the following examples relate to partial compounds with the following structural formulas:
evaluation: evaluation of characteristics of organic light-emitting device
The color coordinates of the material were measured by using an Edinburgh FLS980 fluorescence spectrometer, germany.
Preparation example 1: preparation of Compounds of formula M1
Synthesis of intermediate M1-1: activated zinc powder (0.4 mol) was dissolved in 30ml of anhydrous THF under nitrogen protection, then trimethylchlorosilane (25 ml) was added, stirred for 15min, then ethyl 4-iodobutyrate (0.4 mol) was added, stirred for 12h at 30 ℃, cooled to-10 ℃, then copper cyanide (0.2 mol), lithium chloride (0.4 mol) in THF solvent (200 ml) were added, heated to 0 ℃, stirred for 10min, cooled to-78 ℃ to obtain solution No. 1.
2-cyclohexen-1-one (0.28 mol) and trimethylchlorosilane (0.66 mol) were dissolved in diethyl ether (250 ml), and then slowly added dropwise to the solution No. 1, stirred at-78℃for 3 hours, warmed to room temperature, and reacted for 12 hours. Adding saturated NH 4 Cl (450 ml) and saturated NH 4 Quenching with OH (50 ml), extracting with ethyl acetate three times, mixing the organic phases, and spinning the organic phasesThe solvent was removed by rotary evaporation, and the residue was recrystallized from methanol to give intermediate M1-1 as a white solid (yield: 75%).
Synthesis of compounds of formula M1: intermediate M1-1 (75 mmol), potassium t-butoxide (0.19 mol) was dissolved in anhydrous THF (160 ml), heated and stirred under nitrogen protection, warmed to reflux, monitored by TLC to be substantially complete, cooled to room temperature, the reaction solution was dried under reduced pressure, and the residue was recrystallized to give a white solid compound of formula M1 (yield: 72%).
Mass spectrometry: c (C) 10 H 14 O 2 Theoretical value: 166.10, found: 166.0.
elemental analysis: theoretical value: c:72.26%, H:8.49%, found: c:72.29%, H:8.52%.
Preparation example 2: preparation of Compounds of formula M2
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Synthesis of intermediate M2-1: 3-methyl-2-butanone (100 mmol) was dissolved in anhydrous THF (100 ml) at room temperature, cooled to 0℃and stirred for 30min, ethyl acrylate (100 mmol) was added, warmed to room temperature and stirred for 1.5h. Adding saturated NH 4 The reaction was quenched with Cl solution (50 ml), added with anhydrous magnesium sulfate, filtered and dried under reduced pressure, and the residue was subjected to column chromatography to give intermediate M2-1 (yield: 82%) as a white solid.
Synthesis of intermediate M2-2: intermediate M2-1 (80 mmol) and p-toluenesulfonic acid (2 mmol) were dissolved in absolute ethanol (240 mmol) and benzene (120 ml), heated and stirred under nitrogen protection, warmed to reflux, monitored by TLC to be substantially complete, cooled to room temperature, the reaction solution was dried under reduced pressure, and intermediate M2-1 was subjected to column chromatography to give intermediate M2-2 as a white solid (yield: 35%).
Synthesis of intermediate M2-3: intermediate M2-2 (28 mmol) and LiAlH (10 mmol) were dissolved in anhydrous diethyl ether (100 ml), stirred at room temperature for 8h, TLC was monitored to be substantially complete, water (30 ml) and 10wt% aqueous sulfuric acid (30 ml) were sequentially added to the reaction solution, the organic layer was separated, washed three times with saturated sodium carbonate solution, dried over anhydrous magnesium sulfate, filtered and spin-dried under reduced pressure, and the residue was subjected to column chromatography to give intermediate M2-3 as a white solid (yield: 93%).
Synthesis of intermediate M2-4: gamma-butyrolactone (0.1 mol) is dissolved in anhydrous THF (100 ml), after dissolution is completed, the mixture is cooled to-30 ℃, then 1M lithium diisopropylamide solution (LDA) (120 ml) is slowly added, the reaction is continued for 4 hours at-20 ℃, then methyl iodide (0.15 mol) is added, the temperature is slowly raised to room temperature, the reaction is continued for 4 hours, the saturated sodium bisulphite aqueous solution is subjected to quenching reaction, three times of extraction are adopted by methylene dichloride, the organic phases are combined, dried and filtered, spin-dried, and column chromatography is carried out, thus obtaining an intermediate M2-4 of white solid (yield: 66%).
Synthesis of intermediate M2-5: the same procedure as for the synthesis of intermediate M2-4 gave intermediate M2-5 as a white solid (yield: 60%).
Synthesis of intermediate M2-6: boron tribromide (60 mmol) and sodium iodide (90 mmol) were dissolved in acetonitrile (150 ml) and stirred well to give solution No. 2.
Intermediate M2-2 (66 mmol) was dissolved in acetonitrile (80 ml), slowly added dropwise to the No. 2 solution, stirred at room temperature for 24 hours, quenched with ice/water and dichloromethane (120 ml), extracted with saturated aqueous sodium bicarbonate (150 ml), saturated aqueous sodium thiosulfate (150 ml) and water (150 ml), dried over anhydrous magnesium sulfate, dried under reduced pressure and spun dry, and subjected to column chromatography to give intermediate M2-6 as a white solid (yield: 75%).
Synthesis of compounds of formula M2: activated zinc powder (50 mmol) was dissolved in 30ml anhydrous THF and dibromoethane (2 ml) under nitrogen protection, warmed to 65 ℃, maintained for 5min, cooled to 25 ℃, stirred for 20min, then trimethylchlorosilane (2 ml) was added and stirred for 30min to give solution No. 3.
Intermediate M2-6 (45 mmol) is dissolved in anhydrous THF (120 ml), heated and stirred, the temperature is raised to 30 ℃, solution No. 3 is slowly added dropwise, stirred and reacted for 20h, cooled to-10 ℃, copper cyanide (45 mmol) and lithium chloride (90 mmol) are added, the temperature is raised to 0 ℃, stirred for 20min, and cooled to-78 ℃ to obtain solution No. 4.
Dissolving intermediate M2-3 (45 mmol) and trimethylchlorosilane (90 mmol) in diethyl ether (80 ml), stirring, slowly dripping into solution No. 4, stirring at-78deg.C for 5 hr, heating to room temperature, reacting for 20 hr, adding saturated NH 4 Cl (20 ml) was quenched, extracted with diethyl ether, the organic phases were combined, washed with deionized water (200 ml), dried over anhydrous magnesium sulfate, and then dried under reduced pressure, followed by column chromatography to give a white solid I (yield: 50%).
The white solid I and potassium tert-butoxide (66 mmol) were dissolved in anhydrous THF (80 ml), heated under nitrogen with stirring, warmed to reflux, monitored by TLC to substantially complete the reaction, cooled to room temperature, dried under reduced pressure, and the residue recrystallized to give the compound of formula M2 as a white solid (yield: 75%).
Mass spectrometry: c (C) 14 H 22 O 2 Theoretical value: 222.16, found: 222.2.
elemental analysis: theoretical value: c:75.63%, H:9.97%, found: c:75.60%, H:9.95%.
Preparation example 3: preparation of Compounds of formula M3
The synthesis of intermediate M3-1 to the compound of formula M3 is similar to the synthesis of intermediate M2-1 to the compound of formula M2, except for the difference in starting materials.
Mass spectrometry: c (C) 18 H 30 O 2 Theoretical value: 278.22, found: 278.2.
elemental analysis: theoretical value: c:77.65%, H:10.86%, found: c:77.63%, H:10.88%.
Preparation example 4: preparation of Compounds of formula M4
The synthesis method of the intermediate M4-1 to the intermediate M4-4 is similar to that of the intermediate M2-1 to the intermediate M2-4, except for the difference in raw materials.
The synthesis of intermediate M4-5 to the compound of formula M4 is similar to the synthesis of intermediate M2-6 to the compound of formula M2, except for the difference in starting materials.
Mass spectrometry: c (C) 20 H 30 O 2 Theoretical value: 302.22, found: 302.2.
elemental analysis: theoretical value: c:79.42%, H:10.00%, found: c:79.45%, H:10.03%.
Preparation example 5: preparation of Compounds of formula M5
The synthesis method of the intermediates M5-1 to M5-4 is similar to that of the intermediates M2-1 to M2-4, except that the raw materials are different.
The synthesis of intermediate M5-5 to compounds of formula M5 is similar to the synthesis of intermediate M2-6 to compounds of formula M2, except for the difference in starting materials.
Mass spectrometry: c (C) 20 H 34 O 2 Theoretical value: 306.26, found: 306.3.
elemental analysis: theoretical value: c:78.38%, H:11.18%, found: c:78.42%, H:11.15%.
Preparation example 6: preparation of Compounds of formula M6
The synthesis of the compound of formula M6 is similar to the synthesis of the compound of formula M2, except for the starting materials.
Mass spectrometry: c (C) 15 H 24 O 2 Theoretical value: 236.18, found: 236.2.
elemental analysis: theoretical value: c:76.23%, H:10.24%, found: c:76.26%, H:10.27%.
Preparation example 7: preparation of Compound A-10
Synthesis of intermediate A-10-1: under the protection of nitrogen, 5-phenyl-2 methylquinoline (40 mmol) and iridium trichloride (10 mmol) are dissolved in a mixed solution of 60ml of ethoxyethanol and 30ml of water, heated and stirred, heated to 100 ℃, reacted for 28h, cooled to room temperature and filtered by suction, and washed by deionized water, ethanol and petroleum ether in sequence to obtain a crude product. The crude product was slurried with 100ml of ethanol and petroleum ether under reflux in this order, and filtered to give intermediate A-10-1 (yield: 55%).
Synthesis of Compound A-10: intermediate A-10-1 (12 mmol), compound of formula M1 (96 mmol) and sodium carbonate (96 mmol) were dissolved in 2-ethoxyethanol (170 ml) under nitrogen protection, heated and stirred, warmed to reflux, cooled to room temperature and filtered, and column chromatography was performed to give compound A-10 as an orange-red solid (yield: 42%).
Elemental analysis: theoretical value: c:63.53%, H:4.70%, N:3.53%; actual measurement value: c:63.55%, H:4.75%, N:3.46%.
Preparation example 8: preparation of Compound A-52
Synthesis of intermediate A-52-1: 2- (2-pyridyl) benzothiophene (20 mmol) and iridium trichloride (5 mmol) are dissolved in a mixed solution of 40ml of ethoxyethanol and 20ml of water under the protection of nitrogen, and then heated and stirred, heated to 100 ℃, reacted for 20h, cooled to room temperature and filtered by suction, and washed by deionized water, ethanol and petroleum ether in sequence to obtain a crude product. The crude product was slurried with 50ml of ethanol and petroleum ether in this order under reflux, and filtered to give intermediate A-52-1 (yield: 57%).
Synthesis of Compound A-52: intermediate A-52-1 (2.8 mmol), compound of formula M1 (22.4 mmol) and sodium carbonate (22.4 mol) were dissolved in 2-ethoxyethanol (50 ml) under nitrogen protection, heated and stirred, heated to reflux reaction, cooled to room temperature and filtered, and column chromatography was performed to give compound A-52 as a yellowish green solid (yield: 40%).
Elemental analysis: theoretical value: c:55.58%, H:3.76%, N:3.60%; actual measurement value: c:55.54%, H:3.78%, N:3.58%.
Preparation example 9: synthesis of Compound A-114
Synthesis of intermediate A-114-1: 2-phenylbenzoxazole (25 mmol) and iridium trichloride (6.25 mmol) are dissolved in a mixed solution of 40ml of ethoxyethanol and 20ml of water under the protection of nitrogen, heated and stirred, heated to 100 ℃, reacted for 18h, cooled to room temperature and filtered by suction, and washed by deionized water, ethanol and petroleum ether in sequence to obtain a crude product. The crude product was slurried with 50ml of ethanol and petroleum ether under reflux in this order, and filtered to give intermediate A-114-1 (yield: 52%).
Synthesis of Compound A-114: intermediate A-114-1 (3.25 mmol), compound of formula M2 (26 mmol) and sodium carbonate (26 mmol) were dissolved in 2-ethoxyethanol (60 ml) under nitrogen protection, heated and stirred, warmed to reflux reaction, cooled to room temperature and filtered, and column chromatography was performed to give compound A-114 as a yellowish green solid (yield: 38%).
Elemental analysis: theoretical value: c:59.91%, H:4.65%, N:3.49%; actual measurement value: c:59.93%, H:4.62%, N:3.52%.
Preparation example 10: preparation of Compound A-141
Synthesis of intermediate A-141-1: under the protection of nitrogen, 1- (3, 5-dimethylphenyl) -6-isopropyl isoquinoline (20 mmol) and iridium trichloride (5 mmol) are dissolved in a mixed solution of 40ml of ethoxyethanol and 20ml of water, heated and stirred, heated to 100 ℃, reacted for 18h, cooled to room temperature and filtered by suction, and washed by deionized water, ethanol and petroleum ether in sequence to obtain a crude product. The crude product was slurried with 50ml of ethanol and petroleum ether in this order under reflux, and filtered to give intermediate A-141-1 (yield: 58%).
Synthesis of Compound A-141: intermediate A-141-1 (2.9 mmol), compound of formula M3 (23.2 mmol) and sodium carbonate (23.2 mmol) were dissolved in 2-ethoxyethanol (60 ml) under nitrogen protection, heated and stirred, heated to reflux reaction, cooled to room temperature and filtered, and column chromatography was performed to give compound A-141 as a dark red solid (yield: 39%).
Elemental analysis: theoretical value: c:68.16%, H:6.72%, N:2.79%; actual measurement value: c:68.18%, H:6.70%, N:2.81%.
Preparation example 11: preparation of Compound A-185
Synthesis of intermediate A-185-1: 2-phenylpyridine (10 mmol) and iridium trichloride (2.5 mmol) are dissolved in a mixed solution of 20ml of ethoxyethanol and 10ml of water under the protection of nitrogen, heated and stirred, heated to 100 ℃, reacted for 10 hours, cooled to room temperature and filtered by suction, and washed by deionized water, ethanol and petroleum ether in sequence to obtain a crude product. The crude product was slurried sequentially with 50ml of ethanol and petroleum ether under reflux, and filtered to give intermediate A-185-1 (yield: 55%).
Synthesis of Compound A-185: intermediate A-185-1 (1.37 mmol), compound of formula M5 (11 mmol) and sodium carbonate (11 mmol) were dissolved in 2-ethoxyethanol (30 ml) under nitrogen protection, heated and stirred, warmed to reflux reaction, cooled to room temperature and filtered, and column chromatography was performed to obtain compound A-185 as a yellow solid (yield: 41%).
Elemental analysis: theoretical value: c:62.58%, H:6.13%, N:3.48%; actual measurement value: c:62.55%, H:6.17%, N:3.47%.
Preparation example 12: preparation of Compound A-187
Synthesis of intermediate A-187-1: 2-phenyl quinoline (15 mmol) and iridium trichloride (3.75 mmol) are dissolved in a mixed solution of 40ml of ethoxyethanol and 20ml of water under the protection of nitrogen, heated and stirred, heated to 100 ℃, reacted for 12h, cooled to room temperature and filtered by suction, and washed by deionized water, ethanol and petroleum ether in sequence to obtain a crude product. The crude product was slurried with 60ml of ethanol and petroleum ether under reflux in this order, and filtered to give intermediate A-185-1 (yield: 55%).
Synthesis of Compound A-187: intermediate A-187-1 (2 mmol), compound of formula M4 (16 mmol) and sodium carbonate (16 mmol) were dissolved in 2-ethoxyethanol (30 ml) under nitrogen atmosphere, and the mixture was heated and stirred, heated to reflux, cooled to room temperature, filtered, and subjected to column chromatography to give compound A-187 as an orange-yellow solid (yield: 43%).
Elemental analysis: theoretical value: c:66.57%, H:5.47%, N:3.11%; actual measurement value: c:66.55%, H:5.48%, N:3.14%.
Preparation example 13: preparation of Compound A-210
Synthesis of Compound A-210: intermediate A-141-1 (5 mmol), compound of formula M6 (40 mmol) and sodium carbonate (40 mmol) were dissolved in 2-ethoxyethanol (80 ml) under nitrogen protection, heated and stirred, warmed to reflux, cooled to room temperature and filtered, and column chromatography was performed to give compound A-210 as a dark red solid (yield: 44%).
Elemental analysis: theoretical value: c:67.45%, H:6.79%, N:2.86%; actual measurement value: c:67.49%, H:6.77%, N:2.88%.
The following compounds were prepared in a manner similar to the synthesis of compound A-10, except that the starting materials were adaptively replaced.
Compound a-1: elemental analysis: theoretical value: c:57.73%, H:4.39%, N:4.21%; actual measurement value: c:57.76%, H:4.40%, N:4.23%.
Compound a-6: elemental analysis: theoretical value: c:64.99%, H:5.34%, N:3.30%; actual measurement value: c:64.97%, H:5.38%, N:3.33%.
Compound a-15: elemental analysis: theoretical value: c:64.29%, H:5.03%, N:3.41%; actual measurement value: c:64.33%, H:5.05%, N:3.42%.
Compound a-17: elemental analysis: theoretical value: c:64.99%, H:5.34%, N:3.30%; actual measurement value: c:64.95%, H:5.32%, N:3.30%.
Compound a-23: elemental analysis: theoretical value: c:63.53%, H:4.70%, N:3.53%; actual measurement value: c:63.57%, H:4.74%, N:3.44%.
Compound a-32: elemental analysis: theoretical value: c:66.27%, H:5.90%, N:3.09%; actual measurement value: c:66.29%, H:5.93%, N:3.04%.
Compound a-33: elemental analysis: theoretical value: c:62.73%, H:4.34%, N:3.66%; actual measurement value: c:62.70%, H:4.36%, N:3.62%.
Compound a-46: elemental analysis: theoretical value: c:64.29%, H:5.03%, N:3.41%; actual measurement value: c:64.32%, H:5.06%, N:3.44%.
Compound a-65: elemental analysis: theoretical value: c:60.05%, H:4.91%, N:7.00%; actual measurement value: c:60.02%, H:4.93%, N:7.02%.
Compound a-69: elemental analysis: theoretical value: c:59.89%, H:5.17%, N:3.88%; actual measurement value: c:59.93%, H:5.15%, N:3.89%.
Compound a-73: elemental analysis: theoretical value: c:66.27%, H:5.90%, N:3.09%; actual measurement value: c:66.30%, H:5.90%, N:3.07%.
Compound a-76: elemental analysis: theoretical value: c:66.27%, H:5.90%, N:3.09%; actual measurement value: c:66.32%, H:5.88%, N:3.02%.
Compound a-80: elemental analysis: theoretical value: c:65.65%, H:5.62%, N:3.19%; actual measurement value: c:65.67%, H:5.60%, N:3.22%.
Compound a-119: elemental analysis: theoretical value: c:62.49%, H:5.81%, N:6.34%; actual measurement value: c:62.52%, H:5.83%, N:6.31%.
Compound a-122: elemental analysis: theoretical value: c:67.14%, H:5.74%, N:3.01%; actual measurement value: c:67.16%, H:5.75%, N:3.03%.
Compound a-127: elemental analysis: theoretical value: c:67.40%, H:6.39%, N:2.91%; actual measurement value: c:67.42%, H:6.37%, N:2.92%.
Compound a-132: elemental analysis: theoretical value: c:66.85%, H:6.15%, N:3.00%; actual measurement value: c:66.83%, H:6.18%, N:3.02%.
Compound a-139: elemental analysis: theoretical value: c:68.68%, H:6.46%, N:2.76%; actual measurement value: c:68.67%, H:6.45%, N:2.73%.
Compound a-160: elemental analysis: theoretical value: c:67.92%, H:6.62%, N:2.83%; actual measurement value: c:67.90%, H:6.65%, N:2.84%.
Compound a-165: elemental analysis: theoretical value: c:59.37%, H:5.10%, N:3.15%; actual measurement value: c:59.39%, H:5.13%, N:3.16%.
Compound a-173: elemental analysis: theoretical value: c:65.96%, H:5.19%, N:3.20%; actual measurement value: c:65.98%, H:5.22%, N:3.18%.
Compound a-177: elemental analysis: theoretical value: c:64.99%, H:5.34%, N:3.30%; actual measurement value: c:64.97%, H:5.36%, N:3.33%.
Compound a-182: elemental analysis: theoretical value: c:68.87%, H:7.03%, N:2.68%; actual measurement value: c:68.85%, H:7.04%, N:2.66%.
Compound a-82: elemental analysis: theoretical value: c:67.40%, H:6.39%, N:2.91%; actual measurement value: c:67.36%, H:6.41%, N:2.93%.
Compound a-89: elemental analysis: theoretical value: c:67.40%, H:6.39%, N:2.91%; actual measurement value: c:67.38%, H:6.43%, N:2.90%.
Example 1: preparation of organic electroluminescent device
Deionized water and acetone were used in this order: after ultrasonic treatment of a glass substrate with an Indium Tin Oxide (ITO) electrode (anode) with ethanol (v: v=1:1), drying the treated glass substrate in a clean environment, cleaning with ultraviolet light and ozone, and bombarding the surface of the glass substrate with a low-energy cation beam;
placing the above glass substrate with anode in vacuum chamber, and vacuumizing to 1×10 -4 Pa, evaporating a compound HAT-CN on the anode layer film to form a hole injection layer, wherein the evaporation rate is 0.1nm/s, and the thickness is 5nm;
evaporating a compound NPB on the hole injection layer film to form a hole transport layer, wherein the evaporation rate is 0.1nm/s, and the thickness is 60nm;
evaporating a host material compound RH and a guest material compound A-10 on the hole transport layer film by adopting a multi-source co-evaporation method to form a light-emitting layer, adjusting the evaporation rate of the host material to be 0.1nm/s, wherein the evaporation rate of the guest material is 10% of the evaporation rate of the host material, and the thickness is 30nm;
evaporating the compound ET-1 and the compound ET-2 on the luminous layer film by adopting a multi-source co-evaporation method to form an electron transmission layer, wherein the evaporation rates are 0.1nm/s, and the thickness is 30nm;
Evaporating LiF on the electron transport layer film to form an electron injection layer; the thickness is 1nm;
al was vapor deposited on the electron injection layer film to form a cathode having a thickness of 150nm.
Examples 2 to 16
An organic electroluminescent device was prepared in a similar manner to example 1, except that the compound A-10 of example 1 was replaced with the corresponding compound of Table 1, and the rest was the same as in example 1.
Example 17
Deionized water and acetone were used in this order: after ultrasonic treatment of a glass substrate with an Indium Tin Oxide (ITO) electrode (anode) with ethanol (v: v=1:1), drying the treated glass substrate in a clean environment, cleaning with ultraviolet light and ozone, and bombarding the surface of the glass substrate with a low-energy cation beam;
placing the above glass substrate with anode in vacuum chamber, and vacuumizing to 1×10 -4 Pa, evaporating a compound HAT-CN on the anode layer film to form a hole injection layer, wherein the evaporation rate is 0.1nm/s, and the thickness is 5nm;
evaporating a compound NPB on the hole injection layer film to form a hole transport layer, wherein the evaporation rate is 0.1nm/s, and the thickness is 60nm;
evaporating a host material compound GH and a guest material compound A-1 on the hole transport layer film by adopting a multi-source co-evaporation method to form a light-emitting layer, adjusting the evaporation rate of the host material to be 0.1nm/s, wherein the evaporation rate of the guest material is 10% of the evaporation rate of the host material, and the thickness is 30nm;
Evaporating the compound ET-1 and the compound ET-2 on the luminous layer film by adopting a multi-source co-evaporation method to form an electron transmission layer, wherein the evaporation rates are 0.1nm/s, and the thickness is 30nm;
evaporating LiF on the electron transport layer film to form an electron injection layer with the thickness of 1nm;
al was vapor deposited on the electron injection layer film to form a cathode having a thickness of 150nm.
Examples 18 to 28
An organic electroluminescent device was prepared in a similar manner to example 17, except that the compound A-1 of example 1 was replaced with the corresponding compound of Table 2, and the rest was the same as in example 17.
Comparative example 1
An organic electroluminescent device was prepared in a similar manner to example 1, except that the compound A-10 of example 1 was replaced with the compound represented by formula Ref-1, and the rest was the same as in example 1.
Comparative example 2
An organic electroluminescent device was prepared in a similar manner to example 1, except that the compound A-10 of example 1 was replaced with the compound represented by formula Ref-2, and the rest was the same as in example 1.
Comparative example 3
An organic electroluminescent device was prepared in a similar manner to example 1, except that the compound A-10 of example 1 was replaced with the compound represented by formula Ref-3, and the rest was the same as in example 1.
Comparative example 4
An organic electroluminescent device was prepared in a similar manner to example 17, except that the compound A-1 of example 17 was replaced with the compound represented by formula Ref-4, and the rest was the same as in example 17.
Test example 1
At a luminance of 2000cd/m 2 The driving voltage and current efficiency of the organic electroluminescent devices prepared in examples and comparative examples were measured as follows, and the results are shown in table 1.
Test example 2
At a luminance of 10000cd/m 2 The driving voltage and current efficiency of the organic electroluminescent devices prepared in examples and comparative examples were measured as follows, and the results are shown in table 2.
TABLE 1
TABLE 2
| Guest materials | Driving voltage (V) | Current efficiency (cd/A) | CIE | Color of | |
| Example 17 | Compound A-1 | 4.23 | 63.1 | (0.31，0.64) | Green colour |
| Example 18 | Compound A-52 | 4.35 | 63.5 | (0.32，0.65) | Green colour |
| Example 19 | Compound A-69 | 4.27 | 65.4 | (0.31，0.65) | Green colour |
| Example 20 | Compound A-114 | 4.40 | 62.4 | (0.35，0.60) | Green colour |
| Example 21 | Compound A-122 | 4.42 | 66.7 | (0.31，0.64) | Green colour |
| Example 22 | Compound A-173 | 4.45 | 64.0 | (0.31，0.64) | Green colour |
| Example 23 | Compound A-185 | 4.46 | 64.2 | (0.32，0.65) | Green colour |
| Example 24 | Compound A-33 | 4.14 | 23.7 | (0.49，0.51) | Yellow colour |
| Example 25 | Compound A-46 | 4.32 | 23.9 | (0.49，0.53) | Yellow colour |
| Example 26 | Compound A-160 | 4.44 | 24.5 | (0.47，0.54) | Yellow colour |
| Example 27 | Compound A-165 | 4.43 | 23.4 | (0.47，0.52) | Yellow colour |
| Example 28 | Compound A-187 | 4.45 | 24.2 | (0.48，0.51) | Yellow colour |
| Comparative example 4 | Compound Ref-4 | 4.64 | 52.3 | (0.32，0.62) | Green colour |
As can be seen from the results of table 1, the compound of the present invention has lower driving voltage and higher light emitting efficiency when applied to an organic electroluminescent device, compared with the prior art, when used as a guest material in a light emitting layer of an organic electroluminescent device.
As can be seen from the results of table 2, the compound of the present invention has higher light-emitting efficiency when applied to an organic electroluminescent device, compared to the prior art, when used as a guest material in a light-emitting layer of an organic electroluminescent device.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (12)
1. A compound containing a 1, 3-dione ligand, characterized in that the compound has Ir (L A )(L B ) 2 A structure is shown in which L A Has a structure shown in formula (IA), L B Is of the structure shown in formula (IB);
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1 -C 10 Alkyl of (a);
in formula (IB), X is C or N,
the Q ring is selected from a substituted or unsubstituted benzene ring, a substituted or unsubstituted quinoline ring, a substituted or unsubstituted isoquinoline ring, a substituted or unsubstituted naphthalene ring, a substituted or unsubstituted benzothiophene ring, a substituted or unsubstituted benzofuran ring, a substituted or unsubstituted indole ring, a substituted or unsubstituted benzothiazole ring, a substituted or unsubstituted benzoxazole ring, a substituted or unsubstituted benzimidazole ring;
R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1 -C 10 Alkyl, C of (2) 6 -C 12 Aryl of (a); or R is 1 、R 2 、R 3 、R 4 Any adjacent two of which are cyclic to form a benzene ring selected from substituted or unsubstituted benzene rings;
and optionally substituents on the Q ring, and R 1 、R 2 、R 3 、R 4 Optionally substituents on the above are each independently selected from C 1 -C 6 At least one of an alkyl group and a phenyl group.
2. The compound according to claim 1, wherein at Ir (L A )(L B ) 2 In the structure shown in the drawing, the first and second parts,
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, C 1 -C 7 Is a hydrocarbon group.
3. The compound according to claim 2, wherein at Ir (L A )(L B ) 2 In the structure shown in the drawing, the first and second parts,
in formula (IA), R 1 、R 2 、R 3 、R 4 Each independently selected from H, methyl, ethyl, C 3 Straight chain alkyl, C 3 Branched alkyl, C 3 Cycloalkyl, C 4 Straight chain alkyl, C 4 Branched alkyl, C 4 Cycloalkyl, C 5 Straight chain alkyl group of (2),C 5 Branched alkyl, C 5 Cycloalkyl, C 6 Straight chain alkyl, C 6 Branched alkyl, C 6 Cycloalkyl, C 7 Straight chain alkyl, C 7 Branched alkyl, C 7 Cycloalkyl groups of (a).
4. A compound according to claim 3, wherein at Ir (L A )(L B ) 2 In the structure shown, L A Selected from the group consisting of:
5. the compound according to any one of claims 1-4, wherein at Ir (L A )(L B ) 2 In the structure shown, L B Selected from the group consisting of:
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6. the compound of any one of claims 1-4, wherein the 1, 3-dione ligand-containing compound is selected from any one of the following:
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7. the compound according to any one of claims 1-4, wherein Ir (L A )(L B ) 2 The structure shown is selected from the group consisting of:
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8. use of a compound containing a 1, 3-dione ligand as claimed in any one of claims 1 to 7 as an organic electrophosphorescent material.
9. The use according to claim 8, wherein the organic electrophosphorescent material is an organic electrophosphorescent material in an organic electroluminescent device.
10. An organic electroluminescent device, comprising at least one compound containing a 1, 3-diketone ligand according to any one of claims 1 to 7;
the compound containing a 1, 3-diketone ligand is present in the light-emitting layer of the organic electroluminescent device.
11. The organic electroluminescent device of claim 10, wherein the compound comprising a 1, 3-diketone ligand is a guest material in a light-emitting layer of the organic electroluminescent device.
12. The organic electroluminescent device according to claim 10 or 11, wherein the organic electroluminescent device comprises an anode, a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, an electron transport layer, an electron injection layer, and a cathode.
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| KR1020237017416A KR20230096016A (en) | 2020-10-23 | 2021-10-25 | Compounds containing 1,3-diketone ligands and applications thereof, organic electroluminescent devices |
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