树枝状大分子的自组装超薄膜  

Self-Assembly Ultrathin Films Based On Dendrimers

作　　者：王金凤[1] 贾欣茹[1] 李盈[1] 钟竑 陈金玉[1] 罗国宾 李明谦[1] 危岩 

机构地区：[1]北京大学化学与分子工程学院,北京100871 [2]Drexel大学化学系

出　　处：《高等学校化学学报》2001年第10期1773-1775,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 9992 5 90 ;5 99730 0 1)资助

摘　　要：An ultrathin film with forth generation poly(aminoamine)(PAMAM) dendrimers (methyl quaternary ammonium salt) as polycation and poly(sodium \%p\% styrenesulfonate) (PSS) as polyainon was fabricated \%via\% sequential deposition. It shows that the step by step depositions carried out smoothly by monitoring with UV Vis spectrometer. The multilayer film is rather flat with a mean roughness of \{0.39 nm\} determined by AFM. The average thickness of a bilayer is \{5.0 nm\} obtained from XRD, which indicates that the dendrimers molecules were compressed and possess high flattening.An ultrathin film with forth generation poly(aminoamine)(PAMAM) dendrimers (methyl quaternary ammonium salt) as polycation and poly(sodium \%p\% styrenesulfonate) (PSS) as polyainon was fabricated \%via\% sequential deposition. It shows that the step by step depositions carried out smoothly by monitoring with UV Vis spectrometer. The multilayer film is rather flat with a mean roughness of \{0.39 nm\} determined by AFM. The average thickness of a bilayer is \{5.0 nm\} obtained from XRD, which indicates that the dendrimers molecules were compressed and possess high flattening.

关 键 词：树枝状化合物 自组装 静电作用 树枝状大分子 超薄膜 

分 类 号：O484[理学—固体物理] O641.3[理学—物理]