Synthesis and properties of liquid crystalline 4,4"-dialkoxy-2′-methyl-p-terphenyls

被引：19
|
作者：
Yu, ZN [1 ]
Tu, HL [1 ]
Wan, XH [1 ]
Chen, XF [1 ]
Zhou, QF [1 ]
机构：
[1] Peking Univ, Coll Chem & Mol Engn, Dept Polymer Sci & Engn, Beijing 100871, Peoples R China
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2003年 / 391卷
关键词：
liquid crystal; 4,4 ''-dialkoxy-2 '-methyl-p-terphenyl; 2,5-bis(4 '-alkoxyphenyl)toluene;
D O I：
10.1080/15421400390193567
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new series of laterally substituted terphenyl compounds, 4,4"-dialkoxy-2'-methyl-p-terphenyls (n = 1-12), were synthesized. Their liquid crystallinities were characterized by means of polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). The influence of the length of the terminal alkoxy groups on the liquid crystalline behavior was investigated. It was found that the compounds with shorter end chains (n less than or equal to 8) tended to form nematic mesophases. However, a smectic A mesophase is exhibited for those with longer end chains (9 less than or equal to n less than or equal to 12).
引用
收藏
页码：41 / 55
页数：15
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