Photochemical control of the macrostructure of cholesteric liquid crystals by means of photoisomerization of chiral azobenzene molecules

被引：86

作者：

Kurihara, S ^{[1
]}

Nomiyama, S ^{[1
]}

Nonaka, T ^{[1
]}

机构：

[1] Kumamoto Univ, Fac Engn, Dept Appl Chem & Biochem, Kumamoto 8608555, Japan

来源：

CHEMISTRY OF MATERIALS | 2001年 / 13卷 / 06期

关键词：

D O I：

10.1021/cm0007555

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：

Chiral azobenzene compounds were prepared. A cholesteric phase was induced by mixing each azobenzene compound in a host nematic liquid crystal. A twisting power of the chiral azobenzene compounds was dependent on the distance between an azobenzene moiety and chiral moiety. The twisting power of the chiral azobenzene compounds was decreased by ultraviolet irradiation to cause trans to cis photoisomerization of the azobenzene compounds. The effects of the trans-cis photoisomerization on the phase structures of cholesteric liquid crystals, those that were prepared by mixing chiral azobenzene molecules and non-photochromic chiral molecules, will be discussed.

引用

页码：1992 / 1997

页数：6

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