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Phase transitions between smectic A phases as well as smectic C* phases and undulated structures in terminal non-polar compounds

 

作者: P. Göring,   G. Pelzl,   S. Diele,   P. Delavier,   K. Siemensmeyer,   K.H. Etzbach,  

 

期刊: Liquid Crystals  （Taylor Available online 1995）
卷期: Volume 19, issue 5  

页码: 629-635

 

ISSN:0267-8292

 

年代: 1995

 

DOI:10.1080/02678299508031077

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Two types of smectic A and smectic C phases, respectively, have been proved by X-ray and DSC methods for compounds that are terminal non-polar, but consist of tuning-fork shaped molecules. The structural models of the phases are discussed on the basis of steric interaction and of a dense packing. The X-ray patterns of oriented samples point to an undulation of the smectic layers in the case of the smectic A and smectic B phase.

 

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