Preparation of polymer coated gold nanoparticles by surface-confined living radical polymerization at ambient temperature

被引：245

作者：

Mandal, TK ^{[1
]}

Fleming, MS ^{[1
]}

Walt, DR ^{[1
]}

机构：

[1] Tufts Univ, Dept Chem, Max Tishler Lab Organ Chem, Medford, MA 02155 USA

来源：

NANO LETTERS | 2002年 / 2卷 / 01期

关键词：

D O I：

10.1021/nl015582c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanometer sized core-shell particles containing a gold core and poly(methyl methacrylate) (PMMA) shells were prepared by surface-confined living radical polymerization on gold nanoparticles, Gold nanoparticles were prepared in the presence of 11-mercaptoundecanol (MUD) and subsequently esterified with 2-bromoisobutyryl bromide (BIB). Atom transfer living radical polymerization was conducted on the Br-terminated gold nanoparticles using copper(l) bromide/1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclotetradecane (Me(4)CYclam) as a room-temperature catalyst. FTIR spectroscopy confirmed the presence of polymer on the nanoparticle surfaces. The resulting gold/polymer nanocomposite particles are stable in suspension. Transmission electron microscopy and UV-vis spectroscopy were performed to characterize the gold nanoparticles (GNPs).

引用

页码：3 / 7

页数：5

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