Liquid crystalline biphenyl derivatives and mixtures thereof
申请人:Chisso Corporation
公开号:EP0131373A1
公开(公告)日:1985-01-16
Chiral smectic compounds with a high response rate and superior as a ferroelectric liquid crystalline material are expressed by the formula
(wherein X represents -CH2-, -O- or-CO-; n represents 0. 1 or 2: when X reoresents -CH2-. Y recresents R-. R-CO-. ROCO-,
wherein R represents an alkyl group having 1 to 18 carbon atoms, and when X represents -0- or-CO-, Y represents R; and * represents a symbol indicating an optically active carbon atom) and can be used in chiral smectic mixtures.
反应速度快、作为铁电液晶材料性能优越的手性 Smectic 化合物用以下公式表示
(其中 X 代表-CH2-、-O-或-CO-;n 代表 0、1 或 2:当 X 代表-CH2-。Y代表R-。R-CO-。ROCO-、
其中 R 代表具有 1 至 18 个碳原子的烷基,当 X 代表-0-或-CO-时,Y 代表 R;* 代表表示光学活性碳原子的符号),可用于手性 Smectic 混合物。
Optical active compounds and liquid crystal compositions containing such compounds
申请人:WAKO PURE CHEMICAL INDUSTRIES, LTD
公开号:EP0402110A1
公开(公告)日:1990-12-12
An optical active compound of the formula:
wherein R is alkyl or alkoxy, R* is an optical active alkyl group, X is alkyl or halogen, Y is a single bond
and C* is an asymmetric carbon, is chemically stable and shows or induces large spontaneous polarization and is useful in a chiral liquid crystal composition.