Journal article

Visible luminescence of water-soluble monolayer-protected gold clusters

T Huang, RW Murray

The Journal of Physical Chemistry B | Published : 2001


A highly efficient, visible wavelength (λ = 700 to 800 nm) fluorescence is reported for four water-soluble monolayer-protected gold clusters (MPCs). For 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 vary 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 band and 6(sp) conduction band. MAX 10 1

University of Melbourne Researchers

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