| abstract |
Compounds are provided of formula (I) wherein RJ is CnH2n+1CH=CHCmH2mZ1; n may be 1-5; m may be 0-5; q may be 0, 1 or 2; A1, A2, A3, R, Z, and J are as defined in the description. In particular it describes compounds for use in liquid crystal mixtures and liquid crystal display displays (LCDs) or in applications relating to inter alia thermography using nematic liquid crystal or chiral nematic liquid crystal mixtures. |