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Mesomorphic Properties of A Homologous Series of 4-Cyanophenyl 3,4- Di(4-alkoxybenzoyloxy) benzoates

 

作者: S. Takenaka,   H. Morita,   M. Iwano,   S. Kusabayashi,   T. Ikemoto,   Y. Sakurai,   H. Miyake,  

 

期刊: Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics  （Taylor Available online 1989）
卷期: Volume 166, issue 1  

页码: 157-165

 

ISSN:1044-1859

 

年代: 1989

 

DOI:10.1080/00268948908037147

 

出版商: Taylor & Francis Group

 

关键词: mesomorphic properties;dielectric properties;polar liquid crystals;associated dimer

 

数据来源: Taylor

 

摘要:

A new homologous series of 4-cyanophenyl 3,4-di(4-alkoxybenzoyloxy)benzoates (from ethoxy to decyloxy homologs) has been prepared. The homologs show both nematic and smectic A phases with fine schlieren and fan textures, respectively, whereas these have extremely large molecular breadth. The series is assumed to form an associated dimer and behave as a partially bilayer type smectic A phase. The dielectric properties have also been examined and the results support the formation of the associated dimer. The results have been discussed in terms of the geometry of the molecules.

 

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