申请人:Dainippon Ink and Chemicals, Inc.
公开号:US05324451A1
公开(公告)日:1994-06-28
A compound represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group having from 1 to 18 carbon atoms; R.sub.2 represents an alkyl group having from 2 to 16 carbon atoms; rings A, B, C, and D each represents a 1,4-phenylene group or a 1,4-phenylene group having one or two halogen atoms; Y represents a single bond, ##STR2## m and n each represents 0 or 1; p represents 0, 1, or 2; q represents 0 or an integer of from 1 to 6; and C* and C** each represents an asymmetric carbon atom in an (S)- or (R)-configuration, and a liquid crystal composition containing the compound of formula (I). The compound of formula (I) is a chiral liquid crystal compound exhibiting large spontaneous polarization, a long helical pitch, an SC* phase in a broad temperature range including room temperature, satisfactory orientation, and a high rate of response.
公式(I)表示的化合物:##STR1## 其中R1表示含1至18个碳原子的烷基团;R2表示含2至16个碳原子的烷基团;环A、B、C和D各自代表1,4-苯基团或含有一个或两个卤素原子的1,4-苯基团;Y代表单键,##STR2## m和n各自代表0或1;p代表0, 1或2;q代表0或从1至6的整数;C*和C**各自代表(S)-或(R)-构型的非对称碳原子,以及包含公式(I)化合物的液晶组合物。公式(I)的化合物是一种手性液晶化合物,展现出大的自发极化、长的螺旋间距、在包括室温在内的广泛温度范围内具有SC*相、令人满意的取向性和高响应速度。