Paper Title:
Synthesis of Disk-Rod-Disk Liquid Crystal Trimers by Using Click Chemistry
  Abstract

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.

  Info
Periodical
Key Engineering Materials (Volumes 428-429)
Edited by
Yuan Ming Huang
Pages
106-110
DOI
10.4028/www.scientific.net/KEM.428-429.106
Citation
W. H. Yu, Y. F. Bai, Y. Jing, S. C. Nie, B. Q. Wang, P. Hu, K. Q. Zhao, "Synthesis of Disk-Rod-Disk Liquid Crystal Trimers by Using Click Chemistry", Key Engineering Materials, Vols. 428-429, pp. 106-110, 2010
Online since
January 2010
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