SiO_2@PANI光子晶体的制备及电致变色性能研究  

Preparation and Electrochromic Property of SiO_2@PANI Photonic Crystals

作　　者：梁飞跃[1,2] 李昕[1] 赵宁[2] 徐坚[2] 

机构地区：[1]北京服装学院材料科学与工程学院服装材料研究开发与评价北京市重点实验室,北京100029 [2]中国科学院化学研究所,北京100190

出　　处：《高分子学报》2014年第6期860-864,共5页Acta Polymerica Sinica

基　　金：北京市科技新星项目(项目号2007B010);国家自然科学基金(基金号20974005;21121001);北京市自然科学基金(基金号2102017);北京市教委科技重点项目(项目号KZ201410012017)资助项目

摘　　要：应用Stber法合成单分散SiO2微球,通过垂直沉积自组装光子晶体,由电化学法在所组装的SiO2微球表面生成聚苯胺(PANI),得到了核-壳结构SiO2@PANI光子晶体薄膜.测试了SiO2@PANI光子晶体薄膜的循环伏安曲线、多电位紫外吸收光谱、对比度、响应时间等电致变色性能,结果表明,该光子晶体薄膜在变色时颜色亮丽,其最大对比度可达77%,远高于单纯PANI薄膜的43%,同时响应时间变快.初步实验结果说明将光子晶体结构引入导电聚合物中,能够提高其电致变色性能.Monodisperse silica particles were prepared by the modified Stoeber method,and the SiO2 opal film was obtained by a vertical deposition self-assembly method. Polyaniline was infiltrated into the SiO2 opal template via electrochemical methods, so as to fabricate core-shell structured SiO2 @ PANI photonic crystal films. The eleetrochromie properties,contrast and response time of the SiO2@ PANI film were characterized via cycle voltammograms and spectroeleetrochemistry. It was found that the color of the SiO2 @ PANI film was bright and vibrant with a maximal contrast of 77% ,which was superior to that of the pure PANI film （43%） , and its response speed was faster. It is an effective method to improve the electrochromic performances of conducting polymers by introducing the photonic crystal structures.

关 键 词：光子晶体 二氧化硅微球 聚苯胺 电致变色 

分 类 号：O734[理学—晶体学]