申请人:Chisso Corporation
公开号:US04818432A1
公开(公告)日:1989-04-04
A novel 3-substituted biphenyl compound useful as a component of chiral liquid crystal compositions useful for light-switching elements by the use of ferroelectric liquid crystals; a chiral liquid crystal composition containing the compound; and a light-switching element utilizing the composition are provided, which compound is expressed by the formula ##STR1## wherein either one of R.sup.1 or R.sup.2 represents an alkyl group of 4 to 18 carbon atoms having a methyl branch and the other thereof represents an alkyl group of 2 to 18 carbon atoms; X represents a halogen atom of F, Cl or Br or cyano group; and l represents 0 to 1.
提供一种新的3-取代联苯化合物,可用作手性液晶组分,通过使用铁电液晶实现光开关元件;包含该化合物的手性液晶组成物;以及利用该组成物的光开关元件。该化合物的化学式为:##STR1## 其中R1或R2中的一个表示具有甲基支链的4到18个碳原子的烷基基团,另一个表示2到18个碳原子的烷基基团;X表示F、Cl或Br或氰基;l表示0到1。