CN114702967B - Novel liquid crystal compound and preparation method and application thereof - Google Patents
Novel liquid crystal compound and preparation method and application thereof Download PDFInfo
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- CN114702967B CN114702967B CN202210451647.0A CN202210451647A CN114702967B CN 114702967 B CN114702967 B CN 114702967B CN 202210451647 A CN202210451647 A CN 202210451647A CN 114702967 B CN114702967 B CN 114702967B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 69
- 150000001875 compounds Chemical class 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 229910052731 fluorine Inorganic materials 0.000 claims description 19
- -1 trifluoromethoxy, difluoromethoxy Chemical group 0.000 claims description 19
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 17
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 125000003545 alkoxy group Chemical group 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 10
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 125000001153 fluoro group Chemical group F* 0.000 claims description 7
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 125000003342 alkenyl group Chemical group 0.000 claims description 5
- 125000000304 alkynyl group Chemical group 0.000 claims description 5
- 125000002560 nitrile group Chemical group 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 239000013538 functional additive Substances 0.000 claims description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- 125000006374 C2-C10 alkenyl group Chemical group 0.000 claims description 3
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 claims description 3
- UWCWUCKPEYNDNV-LBPRGKRZSA-N 2,6-dimethyl-n-[[(2s)-pyrrolidin-2-yl]methyl]aniline Chemical compound CC1=CC=CC(C)=C1NC[C@H]1NCCC1 UWCWUCKPEYNDNV-LBPRGKRZSA-N 0.000 claims description 2
- 125000002947 alkylene group Chemical group 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 125000004369 butenyl group Chemical group C(=CCC)* 0.000 claims description 2
- 239000004611 light stabiliser Substances 0.000 claims description 2
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 claims description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 11
- 230000003287 optical effect Effects 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- 125000004432 carbon atom Chemical group C* 0.000 description 8
- 125000001072 heteroaryl group Chemical group 0.000 description 8
- 125000003118 aryl group Chemical group 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 125000005842 heteroatom Chemical group 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 5
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- TXCDCPKCNAJMEE-UHFFFAOYSA-N dibenzofuran Chemical compound C1=CC=C2C3=CC=CC=C3OC2=C1 TXCDCPKCNAJMEE-UHFFFAOYSA-N 0.000 description 4
- IYYZUPMFVPLQIF-UHFFFAOYSA-N dibenzothiophene Chemical compound C1=CC=C2C3=CC=CC=C3SC2=C1 IYYZUPMFVPLQIF-UHFFFAOYSA-N 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 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
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000005457 ice water Substances 0.000 description 3
- 239000012074 organic phase Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 125000001162 cycloheptenyl group Chemical group C1(=CCCCCC1)* 0.000 description 2
- 125000000596 cyclohexenyl group Chemical group C1(=CCCCC1)* 0.000 description 2
- 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 2
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 2
- 229910052805 deuterium Inorganic materials 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 125000004404 heteroalkyl group Chemical group 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical compound C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- HXITXNWTGFUOAU-UHFFFAOYSA-N phenylboronic acid Chemical compound OB(O)C1=CC=CC=C1 HXITXNWTGFUOAU-UHFFFAOYSA-N 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- FIARMZDBEGVMLV-UHFFFAOYSA-N 1,1,2,2,2-pentafluoroethanolate Chemical group [O-]C(F)(F)C(F)(F)F FIARMZDBEGVMLV-UHFFFAOYSA-N 0.000 description 1
- SOZFIIXUNAKEJP-UHFFFAOYSA-N 1,2,3,4-tetrafluorobenzene Chemical compound FC1=CC=C(F)C(F)=C1F SOZFIIXUNAKEJP-UHFFFAOYSA-N 0.000 description 1
- AJKNNUJQFALRIK-UHFFFAOYSA-N 1,2,3-trifluorobenzene Chemical compound FC1=CC=CC(F)=C1F AJKNNUJQFALRIK-UHFFFAOYSA-N 0.000 description 1
- GOYDNIKZWGIXJT-UHFFFAOYSA-N 1,2-difluorobenzene Chemical compound FC1=CC=CC=C1F GOYDNIKZWGIXJT-UHFFFAOYSA-N 0.000 description 1
- GUYHXQLLIISBQF-UHFFFAOYSA-N 1-cyclohexyl-2-fluorobenzene Chemical compound FC1=CC=CC=C1C1CCCCC1 GUYHXQLLIISBQF-UHFFFAOYSA-N 0.000 description 1
- 125000004493 2-methylbut-1-yl group Chemical group CC(C*)CC 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- MGADZUXDNSDTHW-UHFFFAOYSA-N 2H-pyran Chemical compound C1OC=CC=C1 MGADZUXDNSDTHW-UHFFFAOYSA-N 0.000 description 1
- LFEAJBLOEPTINE-UHFFFAOYSA-N 4-(chloromethyl)-1,3-dioxolan-2-one Chemical compound ClCC1COC(=O)O1 LFEAJBLOEPTINE-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 125000004414 alkyl thio group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000000480 butynyl group Chemical group [*]C#CC([H])([H])C([H])([H])[H] 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000000392 cycloalkenyl group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 125000001047 cyclobutenyl group Chemical group C1(=CCC1)* 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- ANWZYYOCGVVADY-UHFFFAOYSA-N cyclohexane;silicon Chemical compound [Si].C1CCCCC1 ANWZYYOCGVVADY-UHFFFAOYSA-N 0.000 description 1
- HHNHBFLGXIUXCM-GFCCVEGCSA-N cyclohexylbenzene Chemical compound [CH]1CCCC[C@@H]1C1=CC=CC=C1 HHNHBFLGXIUXCM-GFCCVEGCSA-N 0.000 description 1
- 125000000522 cyclooctenyl group Chemical group C1(=CCCCCCC1)* 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000002433 cyclopentenyl group Chemical group C1(=CCCC1)* 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 125000004431 deuterium atom Chemical group 0.000 description 1
- 239000012769 display material Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000004428 fluoroalkoxy group Chemical group 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000005980 hexynyl group Chemical group 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- PYLWMHQQBFSUBP-UHFFFAOYSA-N monofluorobenzene Chemical compound FC1=CC=CC=C1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 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
- 125000005244 neohexyl group Chemical group [H]C([H])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 125000004365 octenyl group Chemical group C(=CCCCCCC)* 0.000 description 1
- 125000005069 octynyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C#C* 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000005981 pentynyl group Chemical group 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000001126 phototherapy Methods 0.000 description 1
- 125000002568 propynyl group Chemical group [*]C#CC([H])([H])[H] 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- CTDQAGUNKPRERK-UHFFFAOYSA-N spirodecane Chemical compound C1CCCC21CCCCC2 CTDQAGUNKPRERK-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000011593 sulfur Chemical group 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 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
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- 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
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/40—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur, e.g. silicon, metals
- C09K19/406—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen or sulfur, e.g. silicon, metals containing silicon
-
- 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
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
-
- 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
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/46—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing esters
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The invention relates to a liquid crystal materialThe technical field of materials, in particular to a novel liquid crystal compound and a preparation method and application thereof. The liquid crystal compound has a structure shown in a general formula I; the liquid crystal compound has the characteristics of larger vertical dielectric anisotropy, larger optical anisotropy, lower rotational viscosity, good liquid crystal intersolubility and the like, can be widely applied to the field of liquid crystal display, can achieve the application purposes of low power consumption, wide viewing angle and high contrast ratio, effectively improves the display quality, and has important application value.
Description
Technical Field
The invention relates to the technical field of liquid crystal materials, in particular to a novel liquid crystal compound and a preparation method and application thereof.
Background
In recent years, liquid crystal display devices have been developed more and more rapidly, and various types such as a vehicle-mounted small-sized liquid crystal display device, a portable liquid crystal display device, an ultra-thin liquid crystal display device, and the like have also been developed. Taking television as an example, the portable electronic device is characterized by light weight, small occupied space, convenient movement and the like, and further comprises a notebook type personal computer, a mobile phone and the like.
The liquid crystal material has great research value and good application prospect in the fields of information display materials, organic optoelectronic materials and the like as an environment material. At present, the technology of TFT-LCD products is mature, the technical problems of visual angle, resolution, color saturation, brightness and the like are successfully solved, and large-size and medium-small-size TFT-LCD displays gradually occupy the mainstream position of flat panel displays in the respective fields. However, the requirements for display technology are continuously increasing, and the liquid crystal display is required to realize faster response, lower driving voltage to reduce power consumption, etc., and the liquid crystal material is also required to have low voltage driving, fast response, wide temperature range and good low temperature stability.
The liquid crystal material plays an important role in improving the performance of a liquid crystal display, and in order to improve the performance of the material and enable the material to adapt to new requirements, the research on the synthesis and structure-performance relationship of a novel structure liquid crystal compound becomes an important work in the field of liquid crystals.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide a liquid crystal compound with a novel structure, which has the characteristics of larger vertical dielectric anisotropy, lower optical anisotropy, lower rotational viscosity, good liquid crystal intersolubility and the like, can be widely used in the field of liquid crystal display, can achieve the application purposes of low power consumption, wide viewing angle and high contrast ratio, effectively improves the display quality, and has important application value; another object of the present invention is to provide a method for preparing the liquid crystal compound and application thereof.
Specifically, the invention provides the following technical scheme:
the invention provides a liquid crystal compound, which has a structure shown in a general formula I:
in the formula I, the compound (I),
V 1 、V 2 each independently selected from single bond, -CH 2 -、-CH 2 CH 2 -、-CH＝CH-、-COO-、-OOC-、-CF 2 O-、-OCH 2 -、-CH 2 O-、-OCF 2 -、-CF 2 CH 2 -、-CH 2 CF 2 -、-C 2 F 4 -or-cf=cf-;
R 1 、R 2 、R 3 、R 4 the same or different, each independently selected from hydrogen, deuterium, fluorine, nitrile groups, having C 1 -C 40 Straight chain alkyl of (C) 1 -C 40 Straight-chain alkoxy of (C) 1 -C 40 Straight-chain heteroalkyl radicals of (2) havingC 1 -C 40 Straight chain heteroalkoxy radicals having C 3 -C 40 Branched or cyclic alkyl of (C) 3 -C 40 Branched or cyclic alkoxy of (C) 3 -C 40 Branched or cyclic heteroalkyl having C 3 -C 40 Branched or cyclic heteroalkoxy radicals having C 2 -C 40 Alkenyl or alkynyl, aryl having 6 to 80 carbon atoms or heteroaryl having 2 to 60 carbon atoms, R 1 And R is 2 May optionally be joined or fused and form together with the Si to which they are attached a substituted or unsubstituted ring with or without one or more additional N, O, S or Si heteroatoms in the ring formed; and R is 1 、R 2 、R 3 Optionally substituted by fluorine atoms;
X 1 represents O or S;
R 0 hydrogen or fluorine;
T 1 selected from the group consisting of single bonds or the following groups:
* -and- (x) represents a bond.
Aryl groups in the sense of the present invention preferably contain 6 to 60 carbon atoms, heteroaryl groups in the sense of the present invention contain 2 to 60 carbon atoms and at least one heteroatom, provided that the sum of carbon atoms and heteroatoms is at least 5; the heteroatom is preferably selected from N, O or S. Aryl or heteroaryl is herein considered to mean a simple aromatic ring, i.e. benzene, biphenyl, etc., or a simple heteroaromatic ring, such as pyridine, pyrimidine, thiophene, etc., or a fused aryl or heteroaryl, such as anthracene, phenanthrene, quinoline, isoquinoline, etc. The hydrogen on an aryl or heteroaryl group is simply replaced or substituted to form a substituted aryl or substituted heteroaryl group, such as fluorobenzene, difluorobenzene, trifluorobenzene, tetrafluorobenzene, cyclohexylbenzene, cyclohexylfluorobenzene, and the like, referred to as aryl or heteroaryl.
In the sense of the invention containAlkyl, alkenyl or alkynyl of 1 to 40 carbon atoms is preferably taken to mean the following groups: methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, 2-methylbutyl, n-pentyl, sec-pentyl, neopentyl, cyclopentyl, n-hexyl, neohexyl, cyclohexyl, n-heptyl, cycloheptyl, n-octyl, cyclooctyl, 2-ethylhexyl, cyclohexenyl, heptenyl, cycloheptenyl, octenyl, cyclooctenyl, ethynyl, propynyl, butynyl, pentynyl, hexynyl, heptynyl or octynyl. Alkoxy is preferably an alkoxy group having 1 to 40 carbon atoms, which is taken to mean methoxy, trifluoromethoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, n-pentoxy, sec-pentoxy, 2-methylbutoxy, n-hexoxy, cyclohexyloxy, n-heptoxy, cycloheptyloxy, n-octoxy, cyclooctyloxy, 2-ethylhexyloxy, pentafluoroethoxy and 2, 2-trifluoroethoxy. Heteroalkyl is preferably an alkyl radical having from 1 to 40 carbon atoms, meaning in which the hydrogen atom or-CH is alone 2 Groups which may be substituted by oxygen, sulfur, halogen atoms are considered to mean alkoxy, alkylthio, fluoroalkoxy, fluoroalkylthio, in particular methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, methylthio, ethylthio, n-propylthio, isopropylthio, n-butylthio, isobutylthio, sec-butylthio, tert-butylthio, trifluoromethylthio, trifluoromethoxy, pentafluoroethoxy, pentafluoroethylthio, 2-trifluoroethoxy, 2-trifluoroethylthio, ethyleneoxy, ethylenethio, propyleneoxy, propylenethio, butylenethio, butyleneoxy, pentenyloxy, pentenylthio, cyclopentenyloxy, cyclopentenylthio, hexenyloxy, hexenylthio, cyclohexene thio, acetylenyloxy, acetylenylthio, propynyloxy, butynylthio, pentynyloxy, pentynylthio, hexyloxy, hexylynylthio.
In general, cycloalkyl, cycloalkenyl groups according to the invention may be cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclobutenyl, cyclopentenyl, cyclohexenyl, cycloheptylA radical, cycloheptenyl, wherein one or more-CH 2 The groups may be replaced by the groups described above; in addition, one or more hydrogen atoms may be replaced by deuterium atoms, halogen atoms, or nitrile groups.
Preferably, the liquid crystal compound includes one or more of the following structures:
further, the V 1 、V 2 Each independently selected from single bond, -CH 2 O-、-CH 2 CH 2 -、-CF 2 O-or-COO-.
Further, the R 3 Selected from the group consisting of hydrogen, deuterium, fluorine, nitrile, trifluoromethyl, trifluoromethoxy, difluoromethoxy, having C 1 -C 7 Straight chain alkyl of (C) 1 -C 7 Is a group of linear alkoxy groups, R 3 May be substituted with fluorine atoms.
Further, the R 4 Selected from the group consisting of hydrogen, methyl, ethyl, nitrile groups.
Further, the R 1 、R 2 Each identically or differently selected from the group consisting of having C 1 -C 40 Straight chain alkyl of (C) 1 -C 40 Straight-chain alkoxy of (C) 1 -C 40 Straight chain heteroalkyl of (C) 1 -C 40 Straight chain heteroalkoxy radicals having C 3 -C 40 Branched or cyclic alkyl of (C) 3 -C 40 Branched or cyclic alkoxy of (C) 3 -C 40 Branched or cyclic heteroalkyl having C 3 -C 40 Branched or cyclic heteroalkoxy radicals having C 2 -C 40 Alkenyl or alkynyl group, R 1 And R is 2 May optionally be joined and form together with the Si to which they are attached a substituted or unsubstituted ring with or without one or more additional N, O, S or Si heteroatoms in the ring formed; at R 1 、R 2 May be substituted with fluorine atoms.
Further, the T is 1 Selected from the group consisting of single bonds or the following groups:
* -and- (x) represents a bond.
According to an embodiment of the invention, the R 0 Is fluorine; x is X 1 Is S or O.
According to an embodiment of the invention, the R 4 Selected from the group consisting of hydrogen, methyl, nitrile groups.
According to an embodiment of the invention, the R 3 Selected from the group consisting of hydrogen, fluorine, trifluoromethyl, trifluoromethoxy, difluoromethoxy, and having C 1 -C 7 Straight chain alkyl of (C) 1 -C 7 Is a group of linear alkoxy groups, R 3 May be substituted with fluorine atoms.
According to an embodiment of the invention, the R 1 、R 2 Each identically or differently selected from the group consisting of having C 1 -C 40 Straight chain alkyl of (C) 3 -C 40 Branched or cyclic alkyl of (C) 2 -C 40 Alkenyl or alkynyl group, R 1 And R is 2 May optionally be joined and form together with the Si to which they are attached a substituted or unsubstituted ring with or without one or more additional N, O, S or Si heteroatoms in the ring formed; at R 1 、R 2 May be substituted with fluorine atoms.
Preferably, the R 1 、R 2 Identical or different, each independently selected from the group consisting of methyl, ethyl, propyl, butyl, propenyl, butenyl, or R 1 And R is 2 Bonded to each other to form a compound having C 2 ～C 7 Alkylene groups of (a).
Preferably, the R 4 Selected from hydrogen or methyl.
According to an embodiment of the present invention, preferably, the R 1 、R 2 Identical or different, each independently selected from the group consisting of methyl, ethyl, propyl, butyl, or R 1 And R is 2 Bonded to each other to form a compound having C 2 ～C 5 Alkylene groups of (a).
Preferably, the liquid crystal compound comprises one or more of the following structures LS01-LS 134:
the invention also provides a preparation method of the liquid crystal compound, which comprises the following steps:
wherein R is 0 -R 3 、X 1 、V 1 、V 2 、T 1 Meaning of (1)The definitions are the same; y is Y 1 Br, I, li, OH or OTf; y is Y 2 Is Cl, br, I or OTf.
The raw materials for synthesizing the compound shown in the formula I can be purchased through commercial paths, and the methods of the principle, the operation process, the conventional post treatment, the column purification, the recrystallization purification and the like are well known to the synthesis personnel in the field, so that the synthesis process can be completely realized, and the target product is obtained.
All the steps of all the above methods are carried out in a solvent; the solvent is at least one selected from tetrahydrofuran, 2-methyltetrahydrofuran, N-dimethylformamide, dimethyl sulfoxide, 1-methylpyrrolidin-2-one, ethanol, methanol, dichloromethane, acetone, toluene and deionized water.
The invention also provides a liquid-crystalline medium comprising one or more of the liquid-crystalline compounds described above.
Preferably, the liquid-crystalline medium further comprises, as second component, one or more compounds of the formula II:
wherein,
R 7 、R 8 each independently selected from the group consisting of the groups defined by A, B, C:
a: with C 1 -C 7 Straight-chain alkyl of (C) 1 -C 7 Straight-chain alkoxy of (a);
b: one or more of the groups in a-CH 2 -a group formed after substitution by-O-, -COO-, -OOC-, or-ch=ch-;
c: one or more hydrogen atoms in any of the groups in a are represented by F, cl, -ch=ch 2 or-ch=ch-CH 3 Substituted with a group formed later;
ring B, ring C, ring D, ring E are each independently selected from the group consisting of:
and at least one of the rings B, C, D, E is selected fromOne of the following;
m, n, o are each independently 0 or 1;
Z 1 、Z 2 、Z 3 each independently selected from the group consisting of single bonds, -C 2 H 4 -*、*-CH＝CH-*、*-COO-*、*-OOC-*、*-CH 2 O-*、*-OCH 2 -*、*-CF 2 O-sum-OCF 2 A group consisting of, wherein any H may be replaced by F;
* -and- (x) indicates the position at which the substituent is bonded;
preferably, the liquid-crystalline medium further comprises one or more compounds of the formula III:
wherein,
R 9 、R 10 each independently selected from the group consisting of having C 1 -C 10 Or have C 2 -C 10 Alkenyl groups of (2), wherein any of-CH 2 Can be-CH 2 O-、-OCH 2 -、Instead, any H atom may be replaced by F;
ring F, ring G, ring I, ring J are each independently selected from the group consisting of:
p, q, r are each independently 0 or 1;
Z 4 、Z 5 、Z 6 each independently selected from the group consisting of single bonds, -C 2 H 4 -*、*-CH＝CH-*、*-COO-*、*-OOC-*、*-CH 2 O-*、*-OCH 2 -*、*-CF 2 O-sum-OCF 2 A group consisting of, wherein any H may be replaced by F;
* -and- (x) indicates the position at which the substituents are bonded.
Preferably, in the liquid crystal medium, the mass percentage of the liquid crystal compound is 1-24%, the mass percentage of the compound with the structural formula II is 35-58%, and the mass percentage of the compound with the structural formula III is 30-46%.
Further, the compound with the structural formula II comprises compounds shown in the following formulas II-1 to II-15:
wherein,
R 7 、R 8 each independently selected from the group consisting of the groups defined by A, B, C:
a: with C 1 -C 7 Straight-chain alkyl of (C) 1 -C 7 Straight-chain alkoxy of (a);
b: one or more of the groups in a-CH 2 -a group formed after substitution by-O-, -COO-, -OOC-, or-ch=ch-;
c: the saidOne or more hydrogen atoms in any of groups a are represented by F, cl, -ch=ch 2 or-ch=ch-CH 3 Substituted with a group formed later;
the above-mentioned ring H 1 Ring H 2 Each independently selected from the group consisting of:
further, the compound with the structural formula III comprises compounds shown in the following formulas III-1 to III-16:
wherein R is 9 、R 10 Each independently selected from the group consisting of having C 1 -C 10 Or have C 2 -C 10 Alkenyl groups of (2), wherein any of-CH 2 Can be-CH 2 O-、-OCH 2 -、Instead, any H atom may be replaced by F; (F) each independently represents F or H.
Preferably, the liquid crystal medium further comprises one or more functional additives; the functional additive comprises an antioxidant, a chiral agent, a light stabilizer or an ultraviolet absorber.
The invention also provides a consumer product comprising a liquid crystalline medium as described above.
Such consumer products include, but are not limited to, flat panel displays, computer monitors, medical monitors, televisions, billboards, lights for interior or exterior illumination and/or signaling, heads-up displays, fully or partially transparent displays, flexible displays, laser printers, telephones, cellular telephones, tablet computers, tablet handsets, personal Digital Assistants (PDAs), wearable devices, laptop computers, digital cameras, video cameras, viewfinders, micro-displays with less than 2 inches diagonal, 3-D displays, virtual or augmented reality displays, vehicles, video walls containing a plurality of tiled displays, theatre or gym screens, phototherapy devices, and signs.
Unless otherwise indicated, all starting materials used in the present invention are commercially available, and any ranges recited herein include any number between the endpoints and any subrange formed by any number between the endpoints or any number between the endpoints.
The beneficial effects of the invention are as follows:
the liquid crystal compound provided by the invention has the chemical main structure of dibenzothiophene or dibenzofuran, the dielectric anisotropy of the structure is larger, and meanwhile, a six-membered ring structure containing silicon atoms is introduced to one side of the dibenzothiophene or dibenzofuran to form a strong synergistic effect, so that the negative dielectric anisotropy of the liquid crystal compound is extremely high, and meanwhile, the clearing point is remarkably improved, the optical anisotropy is relatively high, the moderate rotational viscosity and the liquid crystal intersolubility are realized, the low-temperature working effect is excellent, and the performances in the aspects of thermal stability, chemical stability, optical stability, mechanics and the like are good; therefore, the driving voltage is effectively reduced, the response speed of the liquid crystal display device is improved, and the liquid crystal display device has the characteristics of good charge retention rate and the like. Therefore, the compound shown in the formula I can improve the intersolubility and response speed of the liquid crystal compound, improve the low-temperature stability of mixed crystals, expand the application range of the liquid crystal mixture and have important application value.
Detailed Description
The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
The specific techniques or conditions are not identified in the examples and are described in the literature in this field or are carried out in accordance with the product specifications. The reagents or equipment used were conventional products available for purchase by regular vendors without the manufacturer's attention.
In the invention, the preparation methods are all conventional methods unless otherwise specified. All materials used, unless otherwise indicated, are commercially available from the disclosure and percentages such as percentages by mass unless otherwise indicated. The novel series of liquid-crystalline compounds provided by the present invention, all of which are carried out under well-known suitable conditions, involve some simple organic preparation, for example the preparation of phenylboronic acid, which can be synthesised by a skilled operating skill and are not described in detail in the present invention.
Example 1
Preparation of compound LS 15:
20.0mmol of 4, 6-difluoro-7-propoxydibenzo [ b, d ] thiophene-3-phenol (reactant 1) is dissolved in 50mL of DMF under the protection of nitrogen, 24.0mmol of 4-chloromethyl-1, 1-dimethyl silicon cyclohexane (reactant 2) and 40.0mmol of anhydrous potassium carbonate are added, the temperature is raised to 80 ℃ and stirred for reaction for 12 hours, the temperature is reduced to room temperature, the reaction solution is poured into 250mL of ice water, the ice water is extracted by ethyl acetate, the organic phase is collected, dried, filtered, the filtrate is concentrated to dryness under reduced pressure, and the obtained product is separated and purified by a silica gel column, recrystallized by ethanol to obtain white solid, the yield: 84%, HRMS, m/z:435.1563[ M+H ].
Example 2
Preparation of compound LS 27:
/>
under the protection of nitrogen, 20.0mmol of 7-cyclopentane methoxy-4, 6-difluoro dibenzo [ b, d ] thiophene-3-phenol is dissolved in 50mL of DMF, 40.0mmol of anhydrous cesium carbonate and 24.0mmol of 9-chloromethyl-5-silicon spiro [4.5] decane are added, the temperature is raised to 80 ℃, the reaction is stirred for 12 hours, the temperature is reduced to room temperature, 250mL of ice water is added, dichloromethane is used for extraction, an organic phase is collected and then saturated brine is used for washing, the organic phase is dried, filtration and reduced pressure concentration are carried out, and the filtrate is separated and purified by a silica gel column and recrystallized by ethanol to obtain a compound LS27, white solid, and the yield: 90%, HRMS, m/z: 2029[ M+H ].
Example 3
Preparation of compound LS 71:
20.0mmol of 7- ((4-ethylcyclohexyl) methoxy) -4, 6-difluoro-dibenzo [ b, d ] furan-3-phenol is dissolved in 80mL of acetone, 40.0mmol of anhydrous potassium carbonate and 24.0mmol of 4-chloromethyl-1-ethyl-1-methyl silicon cyclohexane are added, the mixture is heated to reflux and stirred for reaction for 12 hours, cooled to room temperature, filtered, the filtrate is concentrated to dryness under reduced pressure, and the mixture is separated and purified by a silica gel column, recrystallized by ethanol to obtain white solid with yield: 88%, HRMS, m/z:514.2703[ M+ ].
Referring to the synthesis method similar to that of examples 1 to 3, the liquid crystal compounds shown in the following table 1 were prepared:
TABLE 1
/>
/>
/>
/>
/>
/>
Examples of mixtures
Examples 8 to 15:
examples 8-15 show the preparation of different liquid crystal media, wherein the monomer structure, amount (weight percent) of the specific compounds of each example, and the results of the performance parameter test of the obtained liquid crystal media are shown in tables 8-15, respectively.
The temperature units involved in each example are in degrees celsius, and the specific meaning of the other symbols and the test conditions are as follows:
p. represents the clear point (. Degree. C.) of the liquid crystal, test instrument: mettler-Toledo-FP System micro thermal analyzer;
γ1 is the rotational viscosity (mpa·s) and the test conditions are: 25 ℃, INSTEC, ALCT-IR1, 18 micron vertical box;
K 11 to give a torsional spring constant, K 33 For the splay elastic constant, the test conditions were: 25 ℃, INSTEC, ALCT-IR1, 18 micron vertical box;
delta epsilon represents dielectric anisotropy, delta epsilon = epsilon-epsilon, wherein epsilon is the dielectric constant parallel to the molecular axis, epsilon is the dielectric constant perpendicular to the molecular axis, and the test conditions are: 25 ℃, INSTEC, ALCT-IR1, 18 micron vertical box;
Δn represents optical anisotropy, Δn=n o -n e Wherein n is o Refractive index of ordinary ray, n e For the refractive index of the extraordinary ray, test conditions: 589nm, 25.+ -. 0.2 ℃.
In the invention, the compounds of the general formulas I, II and III are respectively weighed according to the proportion to prepare the liquid crystal medium, wherein equipment and instruments used for preparing the liquid crystal medium are as follows:
(1) Electronic precision balance (precision 0.1 mg);
(2) Stainless steel beaker: for weighing the compound raw materials;
(3) Spoon: for adding raw materials;
(4) Magnetic force rotor: for stirring;
(5) Temperature-controlled electromagnetic stirrer.
The preparation method of the liquid crystal medium comprises the following steps:
(1) The raw materials are orderly placed;
(2) Placing a stainless steel beaker on a balance, and placing the compound of the formula I into the stainless steel beaker by using a small spoon;
(3) Sequentially adding other compound raw materials according to the required weight;
(4) Placing the stainless steel beaker with the materials on a magnetic stirring instrument for heating and melting;
(5) After most of the mixture in the stainless steel beaker is melted, adding a magnetic rotor into the stainless steel beaker, uniformly stirring the liquid crystal mixture, and cooling to room temperature to obtain the liquid crystal medium.
And filling the obtained liquid crystal medium between two substrates of the liquid crystal display for performance test.
The composition ratios and the performance parameters of the liquid crystal media of example 8 are shown in Table 3;
TABLE 3 Table 3
The composition ratios and the performance parameters of the liquid crystal media of example 9 are shown in Table 4;
TABLE 4 Table 4
The composition ratios and the performance parameters of the liquid crystal media of example 10 are shown in Table 5;
TABLE 5
The component ratios and the performance parameters of the liquid-crystalline medium of example 11 are shown in Table 6;
TABLE 6
/>
The composition ratio and the performance parameters of the liquid crystal medium of example 12 are shown in Table 7;
TABLE 7
The composition ratio of the liquid crystal medium of example 13 and its performance parameters table 8;
TABLE 8
The composition ratio and the performance parameters of the liquid crystal medium of example 14 are shown in Table 9;
TABLE 9
The composition ratio of the liquid crystal medium of example 15 and its performance parameter table 10;
table 10
/>
Comparative example 1
The formulation is shown in Table 11 below, and the components do not include a compound of formula I, but include a compound of formula V.
TABLE 11
Conclusion: as can be seen from the performance parameters of the liquid crystal compositions of examples 8 to 15, the liquid crystal composition provided by the invention has good intersolubility and larger negative dielectric constant, and as can be seen from the comparison of example 13 and comparative example 1, the liquid crystal composition after the cyclohexane or pyran is replaced by the liquid crystal of the silicon cyclohexane of the invention shows good intersolubility and low-temperature stability, and has larger negative dielectric constant, so that the compound shown in the formula I provided by the invention can improve the intersolubility of the liquid crystal compound, expand the application range of the liquid crystal mixture and has important application value.
While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (9)
1. A liquid-crystalline medium, characterized in that it comprises one or more liquid-crystalline compounds of the structure of formula I-1, I-3:
、
；
wherein,
V 1 、V 2 each independently selected from single bond, -CH 2 CH 2 -、-COO-、-CF 2 O-、-OCH 2 -or-CH 2 O-；
R 4 Selected from the group consisting of hydrogen, methyl, nitrile groups;
R 3 selected from the group consisting of hydrogen, fluorine, trifluoromethyl, trifluoromethoxy, difluoromethoxy, and having C 1 -C 7 Straight chain alkyl of (C) 1 -C 7 Is a group of linear alkoxy groups, R 3 One or more hydrogen atoms of (a) may be substituted with a fluorine atom;
R 1 、R 2 each identically or differently selected from the group consisting of having C 1 -C 40 Straight chain alkyl of (C) 3 -C 40 Branched or cyclic alkyl of (C) 2 -C 40 Alkenyl or alkynyl group, R 1 And R is 2 May optionally be bonded and form a ring together with the Si to which it is attached; at R 1 、R 2 One or more hydrogen atoms of (a) may be substituted with a fluorine atom;
T 1 selected from the group consisting of single bonds or the following groups:
；
-and->Representing a connection key.
2. The liquid-crystalline medium according to claim 1, wherein R in formula I 1 、R 2 Identical or different, each independently selected from the group consisting of methyl, ethyl, propyl, butyl, propenyl, butenyl, or R 1 And R is 2 Bonded to each other to form a compound having C 2 ~C 7 An alkylene group of (a);
R 4 selected from hydrogen or methyl.
3. The liquid-crystalline medium according to claim 2, characterized in that in formula I, R is 1 、R 2 Identical or different, each independently selected from the group consisting of methyl, ethyl, propyl, butyl, or R 1 And R is 2 Bonded to each other to form a compound having C 2 ~C 5 Alkylene groups of (a).
4. A liquid crystal medium according to any one of claims 1-3, wherein the liquid crystal compound of the structure shown in formula I-1, I-3 is selected from one or more of the structures shown below:
。
5. the liquid-crystalline medium according to claim 1, characterized in that it further comprises one or more compounds of formula II:
II；
wherein,
R 7 、R 8 each independently selected from the group consisting of the groups defined by A, B, C:
a: with C 1 -C 7 Straight-chain alkyl of (C) 1 -C 7 Straight-chain alkoxy of (a);
b: one or more of any of the groups in A-CH 2 -/>Quilt (S)>-O-/>、/>-COO-/>、/>-OOC-Or->-CH=CH-/>Substituted with a group formed later;
c: one or more hydrogen atoms in any of the groups A are replaced by F, cl,-CH=CH 2 Or->-CH=CH-CH 3 Substituted with a group formed later;
ring B, ring C, ring D, ring E are each independently selected from the group consisting of:
、
、
、
、
and at least one of the rings B, C, D, E is selected from +.>One of the following;
m, n, o are each independently 0 or 1;
Z 1 、Z 2 、Z 3 each independently selected from the group consisting of a single bond,-C 2 H 4 -/>、/>-CH=CH-/>、/>、/>-COO-/>、/>-OOC-/>、/>-CH 2 O-/>、/>-OCH 2 -/>、/>-CF 2 O-/>And->-OCF 2 -/>A group of which any H may be replaced by F;
-and->Indicating the position at which the substituent is bonded.
6. The liquid-crystalline medium according to claim 5, further comprising one or more compounds of formula III:
III；
wherein,
R 9 、R 10 each independently selected from the group consisting of having C 1 -C 10 Or have C 2 -C 10 Alkenyl groups of (2), wherein any of-CH 2 Can be-CH 2 O-、-OCH 2 -、Instead, any H atom may be replaced by F;
ring F, ring G, ring I, ring J are each independently selected from the group consisting of:
、
、
、
、
；
p, q, r are each independently 0 or 1;
Z 4 、Z 5 、Z 6 each independently selected from the group consisting of a single bond,-C 2 H 4 -/>、/>-CH=CH-/>、/>、/>-COO-/>、/>-OOC-/>、/>-CH 2 O-/>、/>-OCH 2 -/>、/>-CF 2 O-/>And->-OCF 2 -/>A group of which any H may be replaced by F;
-and->Indicating the position at which the substituent is bonded.
7. The liquid crystal medium according to claim 6, wherein the liquid crystal medium has a mass percentage of 1-24% of the liquid crystal compound having the structure represented by the formula I-1, I-3, a mass percentage of 35-58% of the compound having the structure represented by the formula II, and a mass percentage of 30-46% of the compound having the structure represented by the formula III.
8. The liquid crystal medium of claim 1, further comprising one or more functional additives; the functional additive comprises an antioxidant, a chiral agent, a light stabilizer or an ultraviolet absorber.
9. Consumer product, characterized in that it comprises a liquid-crystalline medium according to any one of claims 1 to 8.
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1129581A (en) * | 1997-07-11 | 1999-02-02 | Chisso Corp | Liquid crystal compound with negative permitivity anisotropy value, liquid crystal composition containing the liquid crystal compound, and liquid crystal display element using the liquid crystal compound |
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