Title

Facile Preparation of Transition Metal Nanoparticles Stabilized by Well-Defined (Co)Polymers Synthesized via Aqueous Reversible Addition-Fragmentation Chain Transfer Polymerization

Document Type

Article

Publication Date

10-2-2002

Department

Chemistry and Biochemistry

School

Mathematics and Natural Sciences

Abstract

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.

Publication Title

Journal of the American Chemical Society

Volume

124

Issue

39

First Page

11562

Last Page

11563

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