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| 含氟三苯二炔类液晶化合物合成及其性质研究 | |
| 引用本文： | 章思汗,刘可庆,张智勇,张开诚,戴志群,宣丽.含氟三苯二炔类液晶化合物合成及其性质研究[J].液晶与显示,2015,30(5):769-776. |
| 作者姓名： | 章思汗 刘可庆 张智勇 张开诚 戴志群 宣丽 |
| 作者单位： | 1. 武汉轻工大学化学与环境工程学院, 湖北武汉 430023; 2. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130033 |
| 基金项目： | 国家自然科学基金(No.11074054,No.61378095);武汉轻工大学研究生教育创新基金(No.2012cx022) |
| 摘 要： | 目前,越来越多的液晶应用要求向列相液晶材料具有高双折射率性能。本文合成了5个高双折射率含氟三苯二炔类液晶化合物(Ⅳ),经过IR,1 H NMR,13 C NMR谱图鉴定,这些化合物的分子结构完全正确;通过DSC和POM对其液晶相态测试的实验结果表明该类液晶化合物具有较低的熔点和相对较宽的向列相温度范围(达到100℃左右);对其折光率测试结果表明这些液晶化合物的双折射率(Δn)值在0.47以上,改善液晶光学性能。 |
| 关 键 词： | 含氟三苯二炔类液晶化合物 合成 高双折射率 宽温向列相 |
| 收稿时间： | 2015-02-02 |
Synthesis and properties of fluorinated Phenylethynyltolane compounds |
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| ZHANG Si-han,LIU Ke-qing,ZHANG Zhi-yong,ZHANG Kai-cheng,DAI Zhi-qun,XUAN Li.Synthesis and properties of fluorinated Phenylethynyltolane compounds[J].Chinese Journal of Liquid Crystals and Displays,2015,30(5):769-776. | |
| Authors: | ZHANG Si-han LIU Ke-qing ZHANG Zhi-yong ZHANG Kai-cheng DAI Zhi-qun XUAN Li |
| Affiliation: | 1. Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, China; 2. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China |
| Abstract: | More and more application requires faster response speed for nematic liquid crystal materials at present. There is a direct relationship between response speed and birefringence. The fluorinated phenylethynyltolane compounds(Ⅳ)with high birefringence,low melting point were synthesized. Their structures were determined by IR,1H NMR,13C NMR. The liquid crystalline properties were tested by DSC and POM. It shows that these compounds synthesized exhibit low melting point and broad temperature range of nematic phase(with the range about 100℃). These compounds exhibit high birefringence(Δn >0.47) after being tested birefringence. These characters are particularly attractive for increasing response speed of liquid crystal materials and improve the optical properties of liquid crystal. |
| Keywords: | fluorinated phenylethynyltolane compounds synthesis high birefringence broad temperature range of nematic phase |
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