申请人:Secretary of State for Defence
in Her Britannic Majesty's Gov.
of the United Kingdom of
Great Britain and Northern Ireland
公开号:EP0059095A1
公开(公告)日:1982-09-01
A material suitable for a guest-host liquid crystal device comprises a solution of a liquid crystal material and a pleochroic dye where in the pleochroic dye comprises at least one anthraquinone compound free from water solubilising and ionic substituents and having the formula:
wherein Q is NH2, OH, alkyl, aryl, N02 or halo; n is 0 to 4;
each X independently is H, -SR, -NZ1Z2 or Q;
each R independently is alkyl, aryl or cycloalkyl;
Z1 & Z2 are independently H, alkyl, cycloalkyl or aryl; provided that there are at least two groups X which are different -SR groups.
一种适用于客主液晶装置的材料包括液晶材料和褶染染料的溶液,其中褶染染料包括至少一种不含水溶性和离子取代基的蒽醌化合物,其式为: 其中 Q 是 NH2、OH、烷基、芳基、N02 或卤代;n 是 0 至 4;每个 X 独立地是 H、-SR、-NZ1Z2 或 Q;每个 R 独立地是烷基、芳基或环烷基;Z1 和 Z2 独立地是 H、烷基、环烷基或芳基;条件是至少有两个基团 X 是不同的-SR 基团。