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.
化合物的化学式为(I):##STR1## 其中,R.sub.1代表具有1到18个碳原子的烷基;R.sub.2代表具有2到16个碳原子的烷基;环A、B、C和D分别代表1,4-苯基或带有一或两个卤素原子的1,4-苯基;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1到6的整数;C*和C**各自代表(S)-或(R)-构型的不对称碳原子,以及含有化合物(I)的液晶组合物。化合物(I)是一种手性液晶化合物,具有大的自发极化、长的螺旋周期、在包括室温在内的广泛温度范围内的SC*相、令人满意的取向和高响应速率。