Facile photochemical synthesis and characterization of highly fluorescent silver nanoparticles

被引：0
|
作者：
Maretti, Luca [1 ]
Billone, Paul S. [1 ]
Liu, Yun [1 ]
Scaiano, Juan C. [1 ]
机构：
[1] Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada
来源：
Journal of the American Chemical Society | 2009年 / 131卷 / 39期
关键词：
Highly fluorescent silver nanoparticles (AgFNP) have been prepared by a facile photochemical method; yielding these materials in just a few minutes and with excellent long-term stability. The method makes use of photogenerated ketyl radicals that reduce Ag+ from silver trifluoroacetate in the presence of amines. While as functional materials these AgFNP can be described as of nanometer dimensions; we believe that the luminescence arises from particle-supported small metal clusters (predominantly Ag2). The materials have been characterized by electron microscopy; fluorescence and absorption spectroscopy; fluorescence lifetime studies; and 19F NMR spectroscopy. Exploratory work shows that the fluorescence from AgFNP can be efficiently quenched by paramagnetic quenchers; and these studies have been combined with electron paramagnetic resonance work. © 2009 American Chemical Society;
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摘要：
Journal article (JA)
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页码：13972 / 13980
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