Issue 42, 2014

Synthesis of DMF-protected Au NPs with different size distributions and their catalytic performance in the Ullmann homocoupling of aryl iodides

Abstract

DMF-stabilized Au nanoparticles (NPs) with three different particle sizes were prepared by controlling the reaction temperatures and times. In the absence of any additional ligands, these Au NPs showed high catalytic activity in the Ullmann homocoupling of aryl iodides in DMF. The effects of Au particle size on the coupling reaction were investigated by the use of three Au catalysts with mean particle sizes of ca. 1.0 nm, 2.5 nm, and 5.5 nm, respectively. The catalytic activity of the Au NPs was found to be in the order of Au (2.5 nm) > Au (<1.0 nm) > Au (5.5 nm), indicating that surface Au atoms do not have the same catalytic activity toward such a homocoupling reaction.

Graphical abstract: Synthesis of DMF-protected Au NPs with different size distributions and their catalytic performance in the Ullmann homocoupling of aryl iodides

Supplementary files

Article information

Article type
Paper
Submitted
21 Jun 2014
Accepted
18 Aug 2014
First published
18 Aug 2014

Dalton Trans., 2014,43, 15752-15759

Synthesis of DMF-protected Au NPs with different size distributions and their catalytic performance in the Ullmann homocoupling of aryl iodides

W. Yao, W. Gong, H. Li, F. Li, J. Gao and J. Lang, Dalton Trans., 2014, 43, 15752 DOI: 10.1039/C4DT01856G

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