| 偶氮苯聚合物（PGMAA-20）膜光栅结构的分子取向机制 |
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| 引用本文： | 牛永平,张灵志,苏育志,梁兆熙,陆伟,佘卫龙.偶氮苯聚合物（PGMAA-20）膜光栅结构的分子取向机制[J].感光科学与光化学,2004,22(3):183-189. |
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| 作者姓名： | 牛永平 张灵志 苏育志 梁兆熙 陆伟 佘卫龙 |
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| 作者单位： | [1]中山大学化学与化工学院高分子研究所，广东广州510275 [2]中山大学光电材料与技术国家重点实验室，广东广州510275 |
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| 基金项目： | 广东省自然科学基金项目(001249，980346). |
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| 摘 要： | 设计合成及表征了一种含偶氮苯聚合物(PGMAA-20)材料．利用两束S偏振光作为泵浦光在PGMAA-20膜上刻写光栅并观察光栅的衍射信号；然后再用相衬显微镜直接观察偶氮苯薄膜上的光栅结构，并以分子取向机制为基础对光栅形成和消除过程提出了新解释，这种观点被实验观察结果进一步证实．
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| 关 键 词： | 偶氮苯聚合物 光致异构 光栅结构 分子取向 |
| 文章编号： | 1000-3231(2004)03-0183-07 |
| 修稿时间： | 2003年11月20 |
Molecular Reorientation Mechanism of Gratings Structure in an Azobenzene Polymer (PGMAA-20) Film |
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| NIU Yong-ping,ZHANG Ling-zhi,SU Yu-zhi,LIANG Zhao-xi,LU Wei,SHE Wei-long.Molecular Reorientation Mechanism of Gratings Structure in an Azobenzene Polymer (PGMAA-20) Film[J].Photographic Science and Photochemistry,2004,22(3):183-189. |
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| Authors: | NIU Yong-ping ZHANG Ling-zhi SU Yu-zhi LIANG Zhao-xi LU Wei SHE Wei-long |
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| Affiliation: | NIU Yong-ping~1,ZHANG Ling-zhi~1,SU Yu-zhi~1,LIANG Zhao-xi~1,LU Wei~2,SHE Wei-long~2 |
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| Abstract: | An azobenzene polymer (PGMAA-20) was synthesized and characterized.Photoinduced refractive index gratings were written in the azobenzene polymer films by using S S configuration.After the gratings formed,the samples were investigated under a polarized optical phase contrast microscope.It has been found that the gratings are polarization sensitive.This kind of gratings can be kept in the material for a long time.A mode of molecular reorientation is used to explain the formation mechanism of these gratings and it is well consistent with our experimental results. |
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| Keywords: | azobenzene polymer photoinduced isomerization gratings structure molecular reorientations |
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