Molecular dynamics simulations of mutilayer films of polyelectrolytes and nanoparticles

被引:65
作者
Jeon, J
Panchagnula, V
Pan, J
Dobrynin, AV
机构
[1] Univ Connecticut, Polymer Program, Inst Mat Sci, Dept Chem, Storrs, CT 06269 USA
[2] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
[3] Columbia Univ, Dept Chem Engn, New York, NY 10027 USA
关键词
D O I
10.1021/la053444n
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We performed molecular dynamics simulations of multilayer assemblies of flexible polyelectrolytes and nanoparticles. The film was constructed by Sequential adsorption of oppositely charged polymers and nanoparticles in layer-by-layer fashion from dilute Solutions. We have Studied multilayer films assembled from oppositely charged polyelectrolytes, oppositely charged nanoparticles, and mixed films containing both nanoparticles and polyelectrolytes. For all studied systems, the multilayer assembly proceeds through surface overcharging after completion of each deposition step. There is almost linear growth in the surface coverage and film thickness. The multilayer films assembled from nanoparticles show better layer stratification but at the same time have higher film toughness than those assembled from flexible polyelectrolytes.
引用
收藏
页码:4629 / 4637
页数:9
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