Spontaneous formation of chiral macrostructures in achiral hockey-stick liquid crystals

被引：22

作者：

Belaissaoui, Abdelhak ^{[1
]}

Cowling, Stephen J. ^{[1
]}

Goodby, John W. ^{[1
]}

机构：

[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

来源：

LIQUID CRYSTALS | 2013年 / 40卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

hockey-stick; oxadiazole; bent-core; dark conglomerate; nematic; soft crystal; macroscopic chirality; NEMATIC PHASE; CRYSTALLIZATION; MESOGENS; TEXTURES;

D O I：

10.1080/02678292.2013.780268

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the synthesis and properties of a homologous series of asymmetrically substituted 4-(5-(4-benzyloxyphenyl)-1,3,4-oxadiazol-2-yl)phenyl 2-X-4-dodecyloxybenzoates, which have pronounced hockey-stick molecular architectures. The structure was varied through the lateral substitution with various groups, X (H, Me, MeO, Cl, F) in the outer benzene ring. The effect of the lateral group on liquid crystal phase behaviour was investigated by thermal optical microscopy and differential scanning calorimetry. Nematic and dark conclomerate phases were observed with both displaying macroscopically chiral domains.

引用

页码：822 / 830

页数：9

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