【作者】 唐保军；

【导师】 郝伟；

【作者基本信息】 北京工业大学 ， 凝聚态物理， 2007， 硕士

【摘要】 自1991年首次出现光折变聚合物的报道以来,对光折变聚合物材料的研究引起人们越来越浓的兴趣。到目前为止,已经有许多具有光折变效应的聚合物材料被报道和研究。与无机光折变晶体相比,光折变聚合物材料有许多优点,近年来,大量的研究结果表明,许多高分子聚合物光折变材料不仅呈现出极高的光折变效应,而且价格低廉,品种多样,已在光信息处理、高密度光存储、光学相位共轭等高科技领域呈现出非常良好的应用前景。偶氮染料作为一种非线性生色团广泛用于光折变材料中。本文通过重氮化偶联反应制备了二阶非线性光学生色分子4-硝基苯基-3-偶氮-咔唑和4-硝基苯基-[3-[N-(2-羟乙基)咔唑基]]-二氮烯,通过红外、紫外、和拉曼光谱对偶氮染料进行了必要的结构表征。制备了以4-硝基苯基-[3-[N-(2-羟乙基)咔唑基]]-二氮烯为二阶非线性生色团和电荷传输体,PMMA(聚甲基丙烯酸甲酯)为基体,并添加邻苯二甲酸二丁酯为增塑剂的复合物的薄膜样品,找到了制备此复合物薄膜样品的较好的掺杂比和较好的成膜工艺。二波耦合实验广泛用于证实光学薄膜材料是否存在光折变特性。为测试样品的光折变性质,我们准备并搭构建了二波耦合实验光路,初步尝试测试了样品的光折变性质。更多还原

【Abstract】 Photorefractive polymers have attracted great interest since the first report of photorefractive property in a polymer composite in 1991. Since then, a number of polymeric materials which exhibit the photorefractive effect have been prepared and characterized. These materials have many advantages over inorganic photorefractive crystals in applications of high-volume information storage and data processing because of their large optical nonlinearities, low dielectric constants, low cost, and ease fabrication.Azo benzene polymer, one kind of nonlinear chromophores, was commonly used in photorefractive materials. In this paper, two azobene polymers had been made by diazotization-coupling. The compounds were analyzed and characterized by Infrared spectrum and Ultraviolet spectrum and Raman spectrum test method. The result indicated azo in our compound. Azo absorbing band appeared 1404.3 cm^-1, 1433.3 cm^-1.Then, we prepared film sample mixing polymethyl methacrylate （PMMA）, （4-Nitrophenyl） - [3- [N-（2-Hydroxyethyl）carbazoyl]]-diazene, dibutyl phthalate and C₆₀, and found out the best technics in preparing film sample. Asymmetric tow-beam coupling （2BC） is a diagnostic tool commonly used to verify the existence of photorefractive property in newly developed thin film materials.To verify the photorefractive property of our materials, we have prepared and designed the optic experiment of 2BC .Then we tested the film sample and found out the photorefractive property of our materials.更多还原