聚吡咯-二氧化钛自组装复合膜的制备及其光电转换性质  

Fabrication and photovoltaic investigation of polypyrrole-TiO_2 nanocomposite films prepared by in-situ self-assembly method

作　　者：张秀芹[1] 胡海洋[1] 徐明媛[1] 丁明 单永奎[1] 

机构地区：[1]华东师范大学化学系,上海200062

出　　处：《功能材料与器件学报》2007年第5期431-436,共6页Journal of Functional Materials and Devices

基　　金：教育部优秀青年教师资助计划;上海科技启明星计划(No.03QB14015)

摘　　要：通过原位自组装技术制备了聚吡咯-二氧化钛纳米复合膜,利用紫外-可见光谱、红外光谱、原子力显微镜、电化学循环伏安等方法对所制备的复合膜进行了表征。与利用原位自组装技术制备的聚吡咯膜相比较,由于在复合膜中聚吡咯和TiO2纳米粒子之间的相互作用,复合膜π→π*跃迁吸收峰发生蓝移,氧化还原峰的位置向负电位方向移动。沉积在导电玻璃ITO表面的该纳米复合膜在可见光下表现出一定的光电转换性质。Polypyrrole（PPy）-TiO2 nanocomposite film was prepared through the in-situ polymerization of pyrrole in the presence of TiO2 sol.The self-assembled film was characterized by UV-Vis and IR spectroscopy,atomic force microscopy,electrochemical and photoelectrochemical measurements.Due to the interaction between PPy and TiO2 in the nanocomposite film,there is a blue shift for the π→π＊ transition,and there are shifts of the redox peaks in cyclic voltammogram relative to those in the PPy film.Photoelectrochemical experiments revealed that PPy-TiO2 nanocomposite film showed a higher photoelectrochemical response than that of PPy film fabricated under the same condition.

关 键 词：聚吡咯 二氧化钛 纳米复合 光电转换 

分 类 号：TQ050.43[化学工程]