高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 576.

• 研究论文 • 上一篇    下一篇

新型含酰胺键的噻二唑类液晶的合成

商永嘉1,3, 李茂国1, 陆婉芳2, 王彦广3   

  1. 1. 安徽师范大学化学与材料科学学院, 芜湖 241000;
    2. 南京大学化学系, 南京 210093;
    3. 浙江大学化学系, 杭州 310000
  • 收稿日期:2000-12-29 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 商永嘉(1970年出生),男,博士研究生,讲师,主要从事有机合成研究.
  • 基金资助:

    江苏省科委基金(批准号BJ93043)资助.

Synthesis and Properties of New Thiadiazole Liquid CrystallineCompounds with Amide Central Linkages

SHANG Yong-Jia1,3, LI Mao-Guo1, LU Wan-Fang2, WANG Yan-Guang3   

  1. 1. College of Chemistry and Material Science, Anhui Normal University, Wuhu 241000;
    2. Department of Chemistry, Nanjing University. Nanjing 210093, China;
    3. Departerment of Chemistry, Zhejiang University, Hangzhou 310000, China
  • Received:2000-12-29 Online:2002-04-24 Published:2002-04-24

摘要: 合成了以酰胺键为中心桥键的1,3,4-噻二唑衍生物3个系列共16个新化合物。液晶性质测试表明,它们均为具有高相变温度和宽相变范围的稳定液晶化合物。说明极性的酰胺键有利于介晶性能。比较了端某碳原子数目的多寡对Sc相相变温度的影响。

关键词: 酰胺键, 噻二唑环, 液晶, 合成

Abstract: Sixteen 2, 5-bisphenyl-1, 3, 4-thiadiazoles with amide central linkages were synthesized.Theirchemical structures were analyzed by IR and 1H NMR spectrometry.The liquid crystalline properties weredetermined by POMand DSC.The results show that they are all thermally stability liquid crystals andhave higher phase transition temperatures and wide phase transition temperature ranges.The paper indi-cated that the amide central linkages are more conductive to smectic phase.The effect of the carbon atomnumber of terminal group on mesomorphic properties was discussed.

Key words: Amide central linkages, 1,3,4-Thiadiazoles, Liquid crystal, Synthesis

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