Optically active compound and ferroelectric liquid crystal composition containing the same
申请人:ARAKAWA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0370497A1
公开(公告)日:1990-05-30
An optically active compound of the formula:
wherein R¹ is an alkyl or alkyloxy group, Y is a halogen atom, cyano group, nitro group, methyl group, hydrogen atom or trifluoromethyl group, and A is nitro group, cyano group, carboxyl group, hydrogen atom, a halogen atom, an alkyl group, an alkyloxy group, -CO-R² or
in which R² is an alkyl or alkyloxy group and Y is as defined above, which is useful as an additive for liquid crystals and can provide a ferroelectric liquid crystal composition when added to smectic liquid crystals, and which also provide a chiral nematic liquid crystal composition when added to nematic liquid crystals.
式中的光学活性化合物:
其中 R¹ 是烷基或烷氧基,Y 是卤素原子、氰基、硝基、甲基、氢原子或三氟甲基,A 是硝基、氰基、羧基、氢原子、卤素原子、烷基、烷氧基、-CO-R² 或
其中 R² 是烷基或烷氧基,Y 如上文所定义,可用作液晶添加剂,添加到向列液晶中可提供铁电液晶组合物,添加到向列液晶中还可提供手性向列液晶组合物。