Facile preparation of transition metal nanoparticles stabilized by well-defined (Co)polymers synthesized via aqueous reversible addition-fragmentation chain transfer polymerization

被引:338
作者
Lowe, AB
Sumerlin, BS
Donovan, MS
McCormick, CL [1 ]
机构
[1] Univ So Mississippi, Dept Chem & Biochem, Hattiesburg, MS 39406 USA
[2] Univ So Mississippi, Dept Polymer Sci, Hattiesburg, MS 39406 USA
关键词
D O I
10.1021/ja020556h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Herein we disclose a facile method for the preparation of (co)polymer-stabilized transition metal colloids, via the "grafting-to" approach. The method takes advantage of the fact that (co)polymers synthesized in aqueous media, in a controlled fashion, via reversible addition-fragmentation chain transfer bear thiocarbonylthio end groups. These are readily reduced to yield (co)polymers with thiol end groups. When the reduction is performed, with NaBH4, for example, in aqueous media in the presence of an appropriate transition metal species, (co)polymer-stabilized metal nanoparticles are formed in which the size and size distribution are dependent upon the individual transition metals. Colloid formation is confirmed by transmission electron microscopy and UV-vis spectroscopy. Copyright © 2002 American Chemical Society.
引用
收藏
页码:11562 / 11563
页数:2
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