Monotropic smectic A to double layer smectic C transition of biphenyl containing liquid crystal acetylene

被引：0
|
作者：
Jacky W.Y.Lam [1 ]
机构：
[1] Department of Chemistry The Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,China
来源：
Chinese Chemical Letters | 2011年 / 22卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Liquid crystal; Phase structure; Phase transition; Smectic phase; X-ray diffraction;
D O I：
暂无
中图分类号：
O621.2 [有机化合物性质];
学科分类号：
070303 ; 081704 ;
摘要：
5-[(4’-Heptoxy-4-biphenylyl)carbonyloxy]-1-pentyne(A-3,7) was synthesized and the phase structures and transitions were investigated by differential scanning calorimetry(DSC),wide angle X-ray diffraction(WAXD),polarized light microscopy(PLM) and the molecular packing in the crystal and liquid crystalline phases were simulated by molecular dynamic simulation.The results showed that the sample formed thermodynamically metastable SmA and SmC2phases before crystallized during cooling and the crystal phase directly transformed into isotropic phase during heating.
引用
收藏
页码：1355 / 1358
页数：4
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