Ultrathin Multilayer Films Incorporating Keggin-type Heteropolyanion Clusters  

作　　者：Lin XU En Bo WANG Zhuang LI Hong Yu ZHANG Chao QIN 

机构地区：[1]Department of Chemistry,Northeast Normal University,Changchun 130024 [2]Changchun Institute of Applied Chemistry,Academia Sinica,Changchun 130022

出　　处：《Chinese Chemical Letters》2001年第12期1127-1130,共3页中国化学快报（英文版）

基　　金：This project was financially supported by the National Natural Science Foundation of China (Grant No. 29971006 ).

摘　　要：Two new ultrathin multiplayer films have been successfully prepared fi-om Keggin-type heteropoly acids H-4[SiW12O40] and H-3[PMo12O40] with polyelectrolytes PEI, PSS, and PAH, using the electrostatic layer-by-layer self-assembly, technique. The XR results reveal their film thickness at nanoscale (similar to 20 nm). According to the AFM images, it is believed that the surface roughness (rough degree of film surface) of the polyelectrolyte-polyoxometalate film greatly depends on the kind of polyoxometalates.Two new ultrathin multiplayer films have been successfully prepared fi-om Keggin-type heteropoly acids H-4[SiW12O40] and H-3[PMo12O40] with polyelectrolytes PEI, PSS, and PAH, using the electrostatic layer-by-layer self-assembly, technique. The XR results reveal their film thickness at nanoscale (similar to 20 nm). According to the AFM images, it is believed that the surface roughness (rough degree of film surface) of the polyelectrolyte-polyoxometalate film greatly depends on the kind of polyoxometalates.

关 键 词：MATERIALS multiplayer polyelectrolyte-polyoxometalate layer-by-layer 

分 类 号：O484.1[理学—固体物理]