Synthesis of novel siloxane room temperature liquid crystalline

被引:0
|
作者
Wu, Zheng-Long [1 ]
Liao, Chien-Tung [1 ]
Lee, Jiunn-Yih [1 ]
机构
[1] Department of Material and Science Engineering, National Taiwan University of Science and Technology, Taipei, 106, Taiwan
来源
Journal of Technology | 2012年 / 27卷 / 01期
关键词
Differential scanning calorimetry - Liquid crystals - Stereochemistry - X ray diffraction;
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中图分类号
学科分类号
摘要
This article's goal was to analyze the synthesis of room temperature liquid crystal materials with low molar mass organosiloxane. The structures contain 4'-hydroxybiphenyl-4-yl 4-hydroxybenzoate core and chiral butyl 2-hydroxypropanoate unit, and organosiloxane on the end of the achiral molecules. A few novel series of room temperature compounds were synthesized, and the mesophases exhibited by them were compared. The mesophases under discussion were investigated using polarizing microscopy, differential scanning calorimetry, and X-ray diffraction. The substituent had a strong influence in reducing the clearing temperatures and increasing temperature range. The influence of the molecular structure on the occurrence of the SmC* phase was investigated in the article.
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页码:37 / 44
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