Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28532
Title: Luminescent gold nanoparticles capped with tiopronin derivatives
Authors: Lam, KM
Chan, PH 
Wong, KY 
Keywords: Gold nanoparticles
Ligand effects
Luminescence
Tiopronin
Issue Date: 2009
Publisher: American Scientific Publishers
Source: Journal of nanoscience and nanotechnology, 2009, v. 9, no. 4, p. 2337-2345 How to cite?
Journal: Journal of nanoscience and nanotechnology 
Abstract: This paper describes the preparation of gold nanoparticles passivated with different tiopronin-like thiol peptide derivatives. The average size of these gold particles falls into the range of 1.7-2.1 nm with narrow dispersity. All the gold nanoparticles exhibit near-IR luminescence in the spectral range of 700-950 nm. The luminescence properties of the gold nanoparticles depend on the structure of the capping ligands; those capped with polar thiol peptides give weaker luminescence in water. Reducing the packing efficiency of the passivating layer by bulky ligands is likely to facilitate the luminescence quenching effects of foreign quenchers and hence weaken the luminescence of the gold nanoparticles.
URI: http://hdl.handle.net/10397/28532
ISSN: 1533-4880 (print)
DOI: 10.1166/jnn.2009.SE30
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