Visible luminescence of water-soluble monolayer- protected gold clusters

被引:366
作者
Huang, T [1 ]
Murray, RW [1 ]
机构
[1] Univ N Carolina, Kenan Labs Chem, Chapel Hill, NC 27599 USA
关键词
D O I
10.1021/jp0041151
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A highly efficient, visible wavelength (lambda (MAX) = 700 to 800 nm) fluorescence is reported for four water-soluble monolayer-protected gold clusters (MPCs). Fur 451 nm excitation. the quantum Yield of the luminescence of MPCs with 1.8 nm diameter cores and protected by monolayers of tiopronin thiolate is estimated as 0.003 +/- 0.001. The efficiency and wavelength of the luminescence Gary with the ligands of the monolayer around the gold core. The mechanism for the luminescence is hypothesized to be associated with interband transitions between the filled 5d(10) band and 6(sp)(1) conduction band.
引用
收藏
页码:12498 / 12502
页数:5
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