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Issue 6, 2011
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Blending of HAuCl4 and histidine in aqueous solution: a simple approach to the Au10 cluster

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Abstract

Water-soluble, monodispersed, and bluish green-emitting Au10 nanoclusters were synthesized through a simple reaction, in which histidine served as both a reducing agent and a protecting ligand. UV-visible absorption, photoluminescence, electrospray ionization (ESI) mass spectrometry, and X-ray photoelectron spectroscopy (XPS) were carried out to demonstrate the chemical composition and optical properties of the Au10 clusters. The mechanism of this proposed reaction was explored and the reducing ability of histidine was proved from its imidazole group. Finally, the fluorescence of Au NCs at different reaction times, pH value, and temperature was measured in situ. Then a synthetic strategy was proposed for gold nanoclusters with a defined chemical composition, and the resulting Au10 clusters stabilized by histidine are biocompatible with bioorganisms, showing a great potential for applications such as biological labeling and biosensors.

Graphical abstract: Blending of HAuCl4 and histidine in aqueous solution: a simple approach to the Au10 cluster

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Supplementary files

Article information


Submitted
17 Mar 2011
Accepted
07 Apr 2011
First published
12 May 2011

Nanoscale, 2011,3, 2596-2601
Article type
Paper

Blending of HAuCl4 and histidine in aqueous solution: a simple approach to the Au10 cluster

X. Yang, M. Shi, R. Zhou, X. Chen and H. Chen, Nanoscale, 2011, 3, 2596
DOI: 10.1039/C1NR10287G

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