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含手性末端基偶氮聚合物膜的全息光栅研究

HOLOGRAPHY GRATING OF AZOPOLYMER FILMS CONTAINING A CHIRAL END GROUP

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【作者】 董红晨徐则达范星河陈小芳宛新华周其凤

【Author】 DONG Hongchen, XU Zeda, FAN Xinghe, CHEN Xiaofang, WAN Xinhua, ZHOU Qifeng (Department of Polymer Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871)

【机构】 北京大学化学与分子工程学院高分子科学与工程系北京大学化学与分子工程学院高分子科学与工程系 北京100871北京100871北京100871

【Abstract】 The multifunctional azopolymers (PAZ-R +*) containing azobenzene moieties with chiral group were synthesized as a new class of optical polymers.The structure of polymers was characterized by GPC, elemental analysis and circular dichroism.The optical phase conjugated responses of the polymer films were investigated by the degenerate four-wave mixing (DFWM).Furthermore, the photo-induced holographic phase gratings of the films were characterized by POM.The experimental results showed that optically active polymers(PAZ-R +*) containing chiral groups could form holographic phase gratings buried in the films.From the preliminary measurements of photoalignment, it was found that the chiral group in side-chain azobenzene polymer films could play an important role in responding polarization direction of the irradiating beams and the irradiating number.The chiral group was found to have influence on changing physical properties such as optical phase conjugated characteristics effectively and on the formation of microstructures in the film.Further studies on the photoinduced properties of side-chain azobenzene polymer films with chiral groups are in progress.

【关键词】 偶氮聚合物全息光栅手性末端基
【Key words】 AzopolymersHolography gratingChiral group
【基金】 国家自然科学基金资助 (基金号 2 0 134 0 10和 2 0 2 740 0 3)
  • 【文献出处】 高分子学报 ,Acta Polymerica Sinica , 编辑部邮箱 ,2003年01期
  • 【分类号】O631
  • 【被引频次】1
  • 【下载频次】119
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