Study on a Carbosilane Liquid Crystalline Dendrimer of the First Generation-Containing Twelve 4-Nitroazobenzene Mesogen in Its Periphery

Acta Chimica Sinica ›› 2003, Vol. 61 ›› Issue (9): 1478-1483. Previous Articles Next Articles

Original Articles

一代树状碳硅烷液晶研究-端基含12个4-硝基偶氮苯介晶基元

张其震;盛昕;殷晓颖;季怡萍;李光;赵晓光

山东大学化学化工学院;中国科学院长春应用化学研究所

发布日期:2003-09-15

Study on a Carbosilane Liquid Crystalline Dendrimer of the First Generation-Containing Twelve 4-Nitroazobenzene Mesogen in Its Periphery

Zhang Qizhen;Sheng Xin;Yin Xiaoying;Ji Yiping;Li Guang;Zhao Xiaoguang

School of Chemistry and Chemical Engineering, Shandong University;Changchun Institute of Applied Chemistry, Chinese Academy of Sciences

Published:2003-09-15

Abstract

The divergent synthesis of a new carbosilane liquid crystalline (LC) dendrimer of the first generation (Dl) is described. Twelve 4- nitroazobenzene are used as mesogenic fragments and attached in its periphery and fourcarbosilane as core. Structure and properties of Dl were characterized by elemental analysis, ~1H NMR, MALDI-TOF-MS, IR, UV-vis, polarizing optical micrograph, DSC and WAXD. Mesogenic compound M5 exhibits nematic and dendrimer Dl reveals cholesteryl and smectic E liquid crystalline state. Phase behavior of Dl in LC state is K70Chl88I185Ch58S_E48K.

Key words: LIQUID CRYSTAL, NITRO COMPOUNDS, BENZENE AZO COMPOUNDS, SILANE, ELEMENTAL ANALYSIS, NMR, TIME-OFF FLIGHT MASS SPECTROMETRY, IR, UV, DSC

CLC Number:

O631.3

Cite this article

Zhang Qizhen;Sheng Xin;Yin Xiaoying;Ji Yiping;Li Guang;Zhao Xiaoguang. Study on a Carbosilane Liquid Crystalline Dendrimer of the First Generation-Containing Twelve 4-Nitroazobenzene Mesogen in Its Periphery[J]. Acta Chimica Sinica, 2003, 61(9): 1478-1483.

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一代树状碳硅烷液晶研究-端基含12个4-硝基偶氮苯介晶基元

Study on a Carbosilane Liquid Crystalline Dendrimer of the First Generation-Containing Twelve 4-Nitroazobenzene Mesogen in Its Periphery

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