Synthesis of Disk-Rod-Disk Liquid Crystal Trimers by Using Click Chemistry

Abstract:

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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 et al., "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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Price:

$35.00

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