期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 38, 页码 15879-15882出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp909580z
关键词
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资金
- U.S. Department of Energy [DE-AC52-06NA25396, DE-AC04-94AL85000]
- Los Alamos National Laboratory Directed Research LDRD-DR
- Department of Energy Office of Basic Energy Sciences
Biological molecular imaging and sensing requires fluorophores that are not only stable and bright, but also small enough to allow the unencumbered observation of the movement of proteins. Toward this goal, we have studied the formation of fluorescent metallic gold nanoclusters stabilized by small molecule ligands. The morpholine and piperazine backbones of Good's buffers were used to template fluorescent clusters, through a process of etching of nanoparticles first formed in the reaction. The clusters are found to be subnanometer sized, with nanosecond fluorescence lifetimes and as bright, or brighter, than the commercial dye norharmane.
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