Preparation of aggregation stable gold nanoparticles using star-block copolymers

被引：78

作者：

Youk, JH

Park, MK

Locklin, J

Advincula, R ^{[1
]}

Yang, J

Mays, J

机构：

[1] Univ Alabama, Dept Chem, Birmingham, AL 35294 USA

[2] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

LANGMUIR | 2002年 / 18卷 / 07期

关键词：

D O I：

10.1021/la015730e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanoparticles of improved stability against long-term aggregation were prepared using poly(styrene)b-poly(2-vinylpyridine) (PS-b-P2VP) star-block copolymer architectures. The star-block copolymers, physically resembling diblock copolymer micelles, were synthesized by anionic polymerization and coupling with ethylene glycol dimethacrylate. They contain P2VP core segments that facilitated conversion of HAuCl4 to single gold nanoparticles. The size distribution and long-term stability against aggregation of the gold nanoparticles were investigated both as solution and as films. UV-vis spectroscopy and transmission electron microscope images reveal long-term stability against aggregation up to 1 month.

引用

页码：2455 / 2458

页数：4

共 25 条

[21] Polystyrene/poly(2-vinylpyridine) heteroarm star copolymer micelles in aqueous media and onion type micelles stabilized by diblock copolymers [J].