| 偶氮苯为探针的液晶聚合物聚集形态研究 |
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| 引用本文： | 邓伟,李敏慧,Keller Patrick,王晓工.偶氮苯为探针的液晶聚合物聚集形态研究[J].化学通报,2009,72(1). |
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| 作者姓名： | 邓伟 李敏慧 Keller Patrick 王晓工 |
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| 作者单位： | 邓伟,王晓工,Deng Wei,Wang Xiaogong(清华大学化工系高分子研究所教育部先进材料重点实验室,北京,100084);李敏慧,Keller Patrick,Li Minhui,Keller Patrick(居里研究院法国科学院168所居里物理化学实验室,巴黎,75248,法国)
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| 摘 要： | 利用紫外-可见光谱,对比研究了尾挂侧链液晶聚合物和腰挂侧链液晶聚合物在结晶相和液晶相转变过程中的液晶基元取向情况.研究表明,石英基材表面倾向于诱导偶氮液晶基元垂直于基材排列;观察到了在液晶态尾挂侧链液晶聚合物和腰挂侧链液晶聚合物的不同取向行为.在室温下重新结晶数天后,腰挂液晶聚合物的紫外可见光谱缓慢回复.
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| 关 键 词： | 偶氮苯 液晶聚合物 侧链 紫外可见光谱 |
Spectroscopic Study of Azo Mesogenic Unit Orientation for Two Different Types of Liquid Crystalline Polymers |
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| Deng Wei,Li Minhui,Keller Patrick,Wang Xiaogong.Spectroscopic Study of Azo Mesogenic Unit Orientation for Two Different Types of Liquid Crystalline Polymers[J].Chemistry,2009,72(1). |
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| Authors: | Deng Wei Li Minhui Keller Patrick Wang Xiaogong |
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| Institution: | 1 Department of Chemical Engineering;Laboratory for Advanced Materials;Tsinghua University;Beijing 100084;China;2 Institut Curie;CNRS UMR168;Laboratoire Physico-Chimie Curie;75248 Paris;France |
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| Abstract: | The orientation of azo mesogenic units of two kinds of side-chain liquid crystalline polymers were investigated by using UV-Vis spectroscopy. The spin-coated polymer films on quartz were annealed at liquid crystalline temperature for different time. The UV-vis spectra show that the azo mesogenic units possess a predominant orientation perpendicular to the substrates. The side-on and end-on side-chain liquid crystalline polymers show different spectroscopic characteristics that could be related with their ma... |
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| Keywords: | Azobenzene Liquid crystalline polymers Side-chain UV-vis spectroscopy |
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