介孔基纳米复合薄膜研究进展

摘要

Mesoporous materials are the natural micro-reactors for preparation of nanocomposites due to its ordered mesostructures and uniform pore channels.In recent years, through the process design to realize the highly efficient and homogeneous incorporation of guest species, researches on mesoporous-based nanocomposite films have attracted increasing interests of materials scientists, chemists and physicists.In this review, recent advances on the preparation of mesoporous films and mesoporous-based nanocomposite films are firstly summarized, in which the special attentions are focused on new methodology application, such as template-displacement process, ion-exchange method and organosilane surface-modification protocol, for the incorporation of metal oxide, precious metal and semiconductor nanoparticles in the film matrix.Then, the enhanced non-linear optical ( NLO) properties associated with mesoporous-based nanocomposite films are also discussed. More importantly, the possible positive effects of external fields, i.e.magnetic field and microgravity environment , during thermal post-treatment of the mesoporous-based nanocomposite films on their NLO responses are suggested .%基于介孔薄膜的有序纳米孔结构及一致孔径,通过客体组分的高效负载,开展介孔基纳米复合薄膜的制备科学与性能研究是近年来材料、 化学、 物理领域的共同热点.首先综述了国内外近年来在介孔薄膜及介孔基纳米复合薄膜方面的工作进展,重点阐释了通过模板置换、 离子交换、 有机硅烷表面修饰等新方法设计,以及在介孔薄膜中进行金属氧化物、 贵金属、 半导体纳米粒子高效负载的研究结果;在此基础上,进一步综述了介孔基纳米复合薄膜有关非线性光学特性的研究进展,尤其是材料制备过程中的外场环境(磁场、 微重力等)对纳米复合材料非线性光学性质的可能影响.