Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 11, Pages 3913-3920Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja108451v
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- Natural Sciences and Engineering Research Council of Canada
- CFI
- CIPI
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Silver clusters too small to support a plasmon band possess interesting fluorescence properties as well as being a convenient route to studying the early stages of nanoparticle formation. Fluorescent silver clusters are synthesized in toluene solution, and the formation is monitored herein by laser flash photolysis (LFP). Kinetic analysis of the formation of the Ag clusters is consistent with the formation of the smallest possible clusters, silver dimers (Ag-2), whereby a mechanism for the formation of these clusters is provided as well as the first reported extinction coefficient and association constant for Ag-0 to form Ag-2. The formation of Ag-2 clusters is contrasted with the formation of Ag nanoparticles in aqueous media, and the particular stability and selectivity toward Ag-2 in this system is also studied using LFP.
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