Synthesis of disk-rod-disk liquid crystal trimers by using click chemistry

摘要：

A series of disk-rod-disk liquid crystal trimers have been synthesized. Two triphenylene discogens have been connected to a biphenyl mesogen via CuI-NEt3 catalyzed alkyne azide cycloaddition in toluene at room temperature. The trimers have been characterized by using 1H NMR, IR, high resolution Mass spectra and the mesomorphic properties investigated with polarized optical microscopy (POM), differential scanning calorimetry (DSC), and X-ray diffraction. The result shows that the trimers exhibited rectangular columnar mesophase (Colr). The length of the flexible spacer connecting the three segments has important influence on the thermal behaviors of the trimers.

关键词： Liquid crystal trimer Triphenylene Rectangular columnar mesophase Click chemistry Copper (I) catalyzed alkyne azide cycloaddition

作者: Wen-Hao Yu Yue-Feng Bai Yang Jing Shi-Chang Nie Bi-Qin Wang Ping Hu Ke-Qing Zhao

作者单位: College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066,

会议类型: 国际会议

会议名称: 2009 International Symposium on Liquid Crystal Science and Technology(2009国际液晶科技研讨会)

会议地点: 昆明

会议语种:英文

页码: 106-110

在线出版日期: 2009-08-02（万方平台首次上网日期，不代表论文的发表时间）