The synthesis and characterisation of a novel thiophene-based liquid crystal exhibiting ferro-, ferri- and antiferro-electric phase types

被引:41
作者
Byron, DJ
Komitov, L
Matharu, AS
McSherry, I
Wilson, RC
机构
[1] NOTTINGHAM TRENT UNIV,DEPT CHEM & PHYS,NOTTINGHAM NG11 8NS,ENGLAND
[2] CHALMERS UNIV TECHNOL,DEPT PHYS,S-41296 GOTHENBURG,SWEDEN
关键词
D O I
10.1039/jm9960601871
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The synthesis and liquid crystal properties of (R)-(-)-4-(1-methylheptyloxycarbonyl)phenyl 5-(4-decyloxyphenyl)thiophene-2- carboxylate is reported. This material exhibits the following phase types (degrees C):I 97.4 S-A 92.2 S-C* 81.4 ferri 78.8 antiferroelectric 48.6 glass state (characterised by thermal optical microscopy and differential scanning calorimetry). Results from electro-optical investigations, for example, field-induced transitions, temperature and voltage dependence and current and electro-optic response,clearly illustrate the presence of the S-C* ferro-, ferri- and antiferro-electric phase types.
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页码:1871 / 1878
页数:8
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