| 4-多氟烷氧基苯甲酸 4-多氟烷氧基酰基苯酚酯的合成和相变研究 |
| |
| 引用本文： | 王侃,杨永刚,闻建勋.4-多氟烷氧基苯甲酸 4-多氟烷氧基酰基苯酚酯的合成和相变研究[J].液晶与显示,2002,17(1):6-12. |
| |
| 作者姓名： | 王侃 杨永刚 闻建勋 |
| |
| 作者单位： | 中国科学院,上海有机化学研究所,上海,200032 |
| |
| 基金项目： | 国家自然科学基金资助项目 ( 2 9974 0 38) |
| |
| 摘 要： | 设计并合成了一个系列4-（17-氯-12，12，13，13，14，14，15，15，16，16，17，17-十二氟十七烷氧基）苯甲酸4-多氟烷氧基酰基苯酚酯液晶，并通过偏光显微镜和DSC对其相变性质进行了观察和测量。发现当另一侧氟碳链短时，呈现互变近晶A相，随着氟碳链的增长，呈现变近晶A相和近晶C相，最后只呈现单变近晶C相。
|
| 关 键 词： | 液晶 相变 合成 近晶相 液晶显示 4－多氟烷氧基苯甲酸4－多氟烷氧基酰基苯酚酯 |
| 文章编号： | 1007-2780(2002)01-0006-07 |
Synthesis and Mesomorphic Properties of 3-polyfluoroalkoxycarbonylphenyl 4-Polyfluoroalkoxybenzoates |
| |
| WANG Kan,YANG Yong-gang,WEN Jian-xun.Synthesis and Mesomorphic Properties of 3-polyfluoroalkoxycarbonylphenyl 4-Polyfluoroalkoxybenzoates[J].Chinese Journal of Liquid Crystals and Displays,2002,17(1):6-12. |
| |
| Authors: | WANG Kan YANG Yong-gang WEN Jian-xun |
| |
| Abstract: | A series of 4-(polyfluoroalkoxycarbonyl)phenyl 4-(17-chloro-12,12,13,13,14,14,15,15,16,16,17,17-dodecafluoroheptadecaoxy)benzoate were prepared. Their mesomorphic properties were observed and measured by optical polarizing microscopy and DSC. The results show that when the other fluorinated alkyl chain was short,the sample exhibited enantiotropic smectic A phase,but monotropic smectic A and smectic C phases were exhibited by these samples when the fluorinated alkyl chain became longer,at last,smectic A phase disappeared and only monotropic smectic C phase was observed. |
| |
| Keywords: | liquid crystals phase transition synthesis smectic phase |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
