Design and synthesis of new fluorinated ferroelectric liquid-crystalline polymers
作者:Tomoya Kitazume、Takeshi Ohnogi、Keizo Ito
DOI:10.1021/ja00174a023
日期:1990.8
The synthesis and specific properties of the polymers derived from the monomers CH 2 =C(R)CO 2 (CH 2 ) n OPhPhCO 2 PhCO 2 CHR 1 CmH 2m+1 (R=H,Me; R 1 =CF 3 , CF 2 CF 3 ; m=6,7,8,10 n=2,6,8,12) are described. These materials exhibit quick response time (<10 ms) and large spontaneous polarization (40−70 nC/m 2 ) (90°C). A discussion of the response time−structure relationships is given. The response
衍生自单体 CH 2 =C(R)CO 2 (CH 2 ) n OPhPhCO 2 PhCO 2 CHR 1 CmH 2m+1 (R=H,Me; R 1 =CF 3 , CF) 的聚合物的合成和特性2 CF 3 ;m=6,7,8,10 n=2,6,8,12) 进行了描述。这些材料表现出快速响应时间 (<10 ms) 和大自发极化 (40-70 nC/m 2 ) (90°C)。给出了响应时间-结构关系的讨论。随着将介晶连接到聚合物主链的非手性链和手性链长度变短,响应时间变得更快。特别是,发现立体中心上的三氟甲基提高了响应时间