申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0187015A2
公开(公告)日:1986-07-09
A squarilium compound represented by the following formula (I) and a liquid crystal composition containing the same are disclosed:
wherein X and Y each represents
wherein R1 represents a hydrogen atom, an alkyl group, a substituted or unsibstituted aryl group or a substituted or unsubstituted aralkyl group; R2, R3 and R4 each represents a hydrogen atom, an alkyl group or a substituted or unsubstituted alkoxy group; R5 represents a hydrogen atom, an alkyl group, an aralkyl group or an aryl group; ring A represents a cyclic alkylene; ring B represents a substituted or unsubstituted aromatic ring; and ring C represents a heterocyclic ring containing one or two of a nitrogen atom, an oxygen atom and a sulfur atom; with proviso that X and Y are not the same when either one of them represents
or
and a liquid crystal composition containing the squarilium compound of the formula (I).
The squarilium compound (I) are soluble in a wide variety of solvents and resistant to light, and their maximum absorption wavelengths in these solvents are in the ranges of from 700 to 900 nm.
本发明公开了由下式(I)代表的方形化合物和含有该化合物的液晶组合物:
其中 X 和 Y 分别代表
其中 R1 代表氢原子、烷基、取代或未取代的芳基或取代或未取代的烷基; R2、R3 和 R4 各自代表氢原子、烷基或取代或未取代的烷氧基; R5 代表氢原子、烷基、芳基或芳基;环 A 代表环亚烷基;环 B 代表取代或未取代的芳香环;环 C 代表含有一个或两个氮原子、一个氧原子和一个硫原子的杂环。
或
以及含有式(I)方锂化合物的液晶组合物。
角茴香化合物(I)可溶于多种溶剂,耐光,在这些溶剂中的最大吸收波长在 700 至 900 纳米之间。