SOME NEW ALPHA-FLUORO ESTERS INCORPORATING A CYCLOHEXANE RING AS CHIRAL DOPANTS FOR FERROELECTRIC MIXTURES

被引:30
作者
BUCHECKER, R
KELLY, SM
FUENFSCHILLING, J
机构
[1] Central Research Units, F. Hoffmann-La Roche Ltd, Basel
关键词
D O I
10.1080/02678299008047343
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A wide variety of new, optically active α-fluoro esters incorporating a trans-1,4-disubstituted cyclohexane ring and several different core structures have been prepared. Several of these new materials exhibit an enantiotropic chiral smectic C mesophase at elevated temperatures, characterized by high spontaneous polarization, long pitch and low rotational viscosity. Furthermore, they possess exceptional thermal, chemical and photochemical stability. Thus these novel α-fluoro esters incorporating a cyclohexane ring are excellent chiral dopants for chiral smectic C mixtures for utilization in the surface stabilized ferroelectric liquid crystal display. © 1990 Taylor and Francis Ltd.
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页码:217 / 227
页数:11
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