A SEARCH FOR PHOTORESOLVABLE MESOGENS - SYNTHESIS AND PROPERTIES OF A SERIES OF LIQUID-CRYSTALLINE, AXIALLY CHIRAL 1-BENZYLIDENE-4-[4'-[(P-ALKYLPHENYL)ETHYNYL]PHENYL]CYCLOHEXANES

被引：33

作者：

ZHANG, YF ^{[1
]}

SCHUSTER, GB ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT CHEM,ROGER ADAMS LAB,URBANA,IL 61801

来源：

JOURNAL OF ORGANIC CHEMISTRY | 1994年 / 59卷 / 07期

关键词：

D O I：

10.1021/jo00086a042

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A series of axially chiral 1-benzylidene-4-[4'-[(p-alkylphenyl)ethynyl] phenyl]cyclohexanes was prepared in racemic form and as optically active mixtures by application of the Hanessian olefination reaction. These compounds have two spectrally overlapping groups which leads to enhanced circular dichroism. And, with appropriate substituents, they form liquid crystal phases when heated above room temperature. The photochemical and material properties of these compounds were studied to assess their suitability for formation of a chiroptical liquid crystal switch. It was found that the Kuhn anisotropy factor (g(lambda)) is too small for this application.

引用

页码：1855 / 1862

页数：8

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