pH-controlled assemblies of polymeric amine-stabilized gold nanoparticles

被引：71
|
作者：
Sardar, Rajesh [1 ]
Bjorge, Natalie S. [1 ]
Shumaker-Parry, Jennifer S. [1 ]
机构：
[1] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA
来源：
MACROMOLECULES | 2008年 / 41卷 / 12期
关键词：
D O I：
10.1021/ma800407s
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The pH-controlled assembly of gold nanoparticles within a polymer-gold nanoparticle (AuNP) composite material is described. Poly(allylamine) (PAAm) is used as a reducing and stabilizing agent to generate a stable water-soluble polymer-AuNPs composite. The optical properties and the morphology of the composite material are sensitive to the solution pH due to structural changes of the polymer. As a result, the nanoparticles undergo reversible assembly/dispersion processes controlled by the solution pH. The role of the PAAm in the formation of the assemblies is confirmed by infrared spectroscopy and place exchange reactions.
引用
收藏
页码：4347 / 4352
页数：6
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