Studies on Carbosillane Liquid Crystalline Dendrimer with SC*Phase

Chem. J. Chinese Universities ›› 1998, Vol. 19 ›› Issue (7): 1175.

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Studies on Carbosillane Liquid Crystalline Dendrimer with SC^*Phase

ZHANG Qi-Zhen¹, SUN Ji-Run¹, WANG Da-Qing², WANG Yan³, LI Guang⁴

1. Department of Chemistry, Department of Enviromental Engineering, Shandong University, Jinan, 250100;
2. Department of Enviromental Engineering, Shandong University, Jinan, 250100;
3. Analysis and Test Centre, Shandong Normal University, Jinan, 250014;
4. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022

Received:1998-04-21 Online:1998-07-24 Published:1998-07-24

Abstract

Abstract: A liquid crystalline carbosilane dendrimer with SC^*phase has been synthesized in successive steps, resulting in the formation of defined, unimolecular compound. Twelve biphenyl mesogenic units were attached on its periphery and it has a three dimentional, tree like starburst structure. Its phase behavior was K95Sc^*103Ch118I. Compared with its biphenyl mesogenic unit, 4-(2′-methylbutyl)-4′-(ω-hydroxyhexyl)azobenzene, which was melted at 128 ℃ and is not a liquid crystal, it is a good liquid crystal material with S C^*phase.

Key words: Dendrimer, Liquid crystal, SC^*phase

CLC Number:

O753

TrendMD:

ZHANG Qi-Zhen, SUN Ji-Run, WANG Da-Qing, WANG Yan, LI Guang. Studies on Carbosillane Liquid Crystalline Dendrimer with SC^*Phase[J]. Chem. J. Chinese Universities, 1998, 19(7): 1175.

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Studies on Carbosillane Liquid Crystalline Dendrimer with SC^*Phase

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