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Issue 43, 2012
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Au–Cu2S heterodimer formation via oxidization of AuCu alloy nanoparticles and in situ formed copper thiolate

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Abstract

The synthesis of hybrid nanostructures has been of great interest to many material scientists, yet simple and facile routes to prepare these structures remain a difficult task with many reaction variables to tune. Herein, we report the synthesis of Au–Cu2S heterodimers from AuCu alloy nanoparticles by simply adding 1-dodecanethiol. Detailed characterization of this structural transformation process revealed that the crucial step of this synthetic approach was the alloy oxidization and subsequent formation of intermediate copper thiolate. Roles of surfactants and sulfur source have also been investigated. These observations provide critical insight into the understanding of the pathways of structure transitions from AuCu alloy to Au–Cu2S heterodimer nanoparticles, and will open up new ways of synthesizing heterodimer nanoparticles from metallic alloys.

Graphical abstract: Au–Cu2S heterodimer formation via oxidization of AuCu alloy nanoparticles and in situ formed copper thiolate

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Supplementary files

Article information


Submitted
25 Jul 2012
Accepted
14 Sep 2012
First published
17 Sep 2012

J. Mater. Chem., 2012,22, 23169-23174
Article type
Paper

Au–Cu2S heterodimer formation via oxidization of AuCu alloy nanoparticles and in situ formed copper thiolate

X. Ding, Y. Zou and J. Jiang, J. Mater. Chem., 2012, 22, 23169
DOI: 10.1039/C2JM34916G

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