| 主权项 |
1. Liquid-crystalline material having a clearing point of higher than 95° C. and having a positive dielectric anisotropy Δ∈, comprising one or more dye compounds F and one or more compounds of a formula (IA) or (IB) where the following applies to the groups and indices occurring: A11 is selected on each occurrence, identically or differently, from X is selected on each occurrence, identically or differently, from F, Cl, CN, alkyl groups having 1 to 10 C atoms, alkoxy groups having 1 to 10 C atoms and thioalkoxy groups having 1 to 10 C atoms, where one or more hydrogen atoms in the alkyl, alkoxy and thioalkoxy groups may be replaced by F or Cl, and where one or more CH2 groups in the alkyl, alkoxy and thioalkoxy groups may be replaced by O or S; A12 is on each occurrence, identically or differently, a group of a formula (A12A) or (A12B) where the bond denoted by * denotes the bond to the group Z11; Z11 is selected on each occurrence, identically or differently, from —CO—O—, —O—CO—, —CF2—CF2—, —CF2—O—, —O—CF2—, —CH2—CH2—, —CH═CH—, —CF═CF—, —CF═CH—, —CH═CF—, —C≡C—, —OCH2—, —CH2O— and single bonds; E is selected from alkylene groups having 3 to 12 C atoms, where one or more H atoms in the alkylene groups may be replaced by F, Cl, —Si(R1)2OSi(R1)2OSi(R1)3, Si(R1)3 or CN, and where one or more CH2 groups in the alkylene groups may be replaced by CR1═CR1, C≡C, Si(R1)2, Si(R1)2O, O, S, —O—CO— or —CO—O—; R11 is selected from H, F, Cl, CN, NCS, R1—O—CO—, R1—CO—O—, alkyl groups having 1 to 10 C atoms, alkoxy groups having 1 to 10 C atoms, thioalkoxy groups having 1 to 10 C atoms, alkenyl groups having 2 to 10 C atoms, alkenyloxy groups having 2 to 10 C atoms and thioalkenyloxy groups having 2 to 10 C atoms, where one or more H atoms in the alkyl, alkoxy, thioalkoxy, alkenyl and alkenyloxy groups may be replaced by F, Cl, —Si(R1)2OSi(R1)2OSi(R1)3, Si(R1)3 or CN, and where one or more CH2 groups in the alkyl, alkoxy, thioalkoxy, alkenyl and alkenyloxy groups may be replaced by Si(R1)2, Si(R1)2O, O, S, —O—CO—, —CO—O— or a unit A11; R1 is selected on each occurrence, identically or differently, from alkyl groups having 1 to 10 C atoms, in which one or more hydrogen atoms may be replaced by F, Cl, —Si(R1)2OSi(R1)2—OSi(R1)3, Si(R1)3 or CN, and in which one or more CH2 groups may be replaced by Si(R1)2, Si(R1)2O, O or S; R12 is selected on each occurrence, identically or differently, from H, F, Cl, CN, NCS, CF3, CF2CF3, CHF2, CH2F, CH═CF2, CH═CFH, CH═CH(CN), OCF3, OC(CF3)3, OCF2CF3, OCHF2, OCH2F, O—CH═CF2, O—CH═CFH, O—CF2—CF═CF2, OSF5, SF5, SCF3, SCF2CF3, SCHF2, SCH2F, S—CH═CF2, S—CH═CFH, R1—O—CO—, R1—CO—O—, alkyl groups having 1 to 10 C atoms, alkoxy groups having 1 to 10 C atoms, thioalkoxy groups having 1 to 10 C atoms, alkenyl groups having 2 to 10 C atoms, alkenyloxy groups having 2 to 10 C atoms and thioalkenyloxy groups having 2 to 10 C atoms, where one or more H atoms in the alkyl, alkoxy, thioalkoxy, alkenyl and alkenyloxy groups may be replaced by F, Cl or CN, and where one or more CH2 groups in the alkyl, alkoxy, thioalkoxy, alkenyl and alkenyloxy groups may be replaced by O, S, —O—CO— or —CO—O—; where at least one radical R12 in the group A12 is selected from F, Cl, CN, NCS, CF3, CF2CF3, CHF2, CH2F, CH═CF2, CH═CFH, CH═CH(CN), OCF3, OC(CF3)3, OCF2CF3, OCHF2, OCH2F, O—CH═CF2, O—CH═CFH, O—CF2—CF═CF2, OSF5, SF5, SCF3, SCF2CF3, SCHF2, SCH2F, S—CH═CF2 and S—CH═CFH; and n is on each occurrence, identically or differently, 1, 2, 3 or 4. |
