申请人:Canon Kabushiki Kaisha
公开号:US04867903A1
公开(公告)日:1989-09-19
A fluoroalkane derivative represented by the formula: ##STR1## wherein R denotes an alkyl group having 1-16 carbon atoms, C* denotes an asymmetric carbon atom, R.sup.1 denotes an alkyl or alkoxy group having 1-16 carbon atoms; ##STR2## respectively denote a phenylene group ##STR3## a cyclohexylene group ##STR4## or a pyrimidinylene group ##STR5## p is 0 or 1, q is 0 or 1 when p is 1, r is 0 or 1; and l, m and n are respectively 0 or a positive integer satisfying the relationship of l+m+n.gtoreq.1. The fluoroalkane derivative has a fluorine atom providing a large dipole moment and directly connected to an asymmetric carbon atom, so that it provides a high speed responsive characteristic through an increased spontaneous polarization when contained in a liquid crystal composition, especially a ferroelectric liquid crystal composition.
一种由以下结构式表示的氟代烷衍生物:其中R代表具有1-16个碳原子的烷基基团,C*代表一个不对称碳原子,R.sup.1代表具有1-16个碳原子的烷基或烷氧基团;分别代表一个苯基团、一个环己基团或一个嘧啶基团,p为0或1,q为0或1,当p为1时,r为0或1;l、m和n分别为0或满足l+m+n≥1的正整数。该氟代烷衍生物具有提供大偶极矩的氟原子,直接连接到一个不对称碳原子,因此当包含在液晶组合物中,特别是铁电液晶组合物中时,通过增加自发极化而提供高速响应特性。