Heart of gold: A three-component material composed of 2-nm Au nanoparticles (see picture; blue spheres) capped with alkanethiols that are partially functionalized with alkoxysilane groups and then incorporated into an "open shell" of silica was prepared. Upon calcination, the sample is a highly active catalyst for the oxidation of CO at low temperatures, being an order of magnitude more active than Au on structured mesoporous materials. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z600552_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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