期刊论文

Synthesis and properties of methylated and fluorinated phenylethynyltolane compounds

中文

武汉轻工大学学报

2095-7386

2015

3

46-51

10.3969/j.issn.2095-7386.2015.03.010

本校为第一机构

三苯二炔类液晶化合物因具有双折射率（△n）高、向列相温度范围宽等特性而受到研究人员的重视。研究采用Sonogashira 偶联法合成了4种苯基含氟和甲基的三苯二炔类液晶化合物（Ⅵ），合成总产率达到20％，IR和NMR测试结果表明这些化合物的结构正确。对目标化合物的物化性质进行测试，结果表明，这些化合物具有较高的△n（＞0．42）和相对较低的熔点（72—83℃）以及较宽的向列相温度范围（60—100℃）。将这些化合物应用于液晶器件中，对于提高器件的响应性能具有积极意义。

Phenylethynyltolane compounds have attracted the attention of researchers because of the advantages of high birefringence（ △n） and broad nematic range. Four types of methylated and fluorinated phenylethynyltolane compounds was prepared mainly via sonogashira cross-coupling reaction with 20% yield and their structures are confirmed by IR and NMR. The property test results indicated that these compounds exhibit high birefringence（ 0. 42）,low melting point（ 72—83 ℃） and broad nematic temperature range（ 60—100 ℃）. These compounds are p...