关键词: 逐层自组装, 纳米结构复合膜, 制备

Abstract: Using layerbylayer selfassembly technique,we have successfully c onstructed nanostructured composite films of conjugated polymer (sulfonic acid r ing substituted polyaniline, SPAn)/ semiconductor nanoparticles(QCdS).The proc esses synthesis have been studied by UVVis, contact angle measurement, XPS and AFM techniques.The results indicated that the selfassembly processes were dep endent on the pH of the solution of each component and the doping time.It has be en found that the roughness of the assembled nanocomposite films increases as the layer number increases.The main reason can be attributed to the generation o f adsorption defects from partially adsorbed film surface in film fabrication pr ocesses.

Key words: Layer-by-layer self-assembly, Nanocomposite films, Preparation