Synthesis and Characterization of Liquid Crystal Metal Benzoporphyrins

Abstract

Abstract: In this paper, we describe a much improved synthetic procedure that leads to two new LCbenzoporphyrin──the hitheto unreported p-n-alkoxyl-phenyl-benzoporphyrin.We find out that the appearance and the temperature range of a liquid crystalline phase depend on the length of the side chains.This temperature range is wider than that of octaethanol-porphyrin, These compounds melt to isotropic liquids well below their decomposition point and exhibit a relatively lower viscosity than LC phthalocynine, columar discotic mesophase.

Key words: Benzoporphyrin, Liquid crystal porphyrin, Liquid crystal

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WANG Xing-Qiao, CAO Chang-Sheng, GAO Shuang, SHI Tong-Shun, YU Lian-Xiang, CAO Xi-Zhang. Synthesis and Characterization of Liquid Crystal Metal Benzoporphyrins[J]. Chem. J. Chinese Universities, 1996, 17(5): 684.

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Synthesis and Characterization of Liquid Crystal Metal Benzoporphyrins

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