Gold/Palladium Bimetallic Alloy Nanoclusters Stabilized by Chitosan as Highly Efficient and Selective Catalysts for Homocoupling of Arylboronic Acid
Onsulang Sophiphun A , Jatuporn Wittayakun A , Raghu Nath Dhital B , Setsiri Haesuwannakij B , Arumugam Murugadoss C and Hidehiro Sakurai B C D
+ Author Affiliations
- Author Affiliations
A School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.
B Department of Functional Molecular Science, School of Physical Sciences, The Graduate University for Advanced Studies (SOKENDAI), Myodaiji, Okazaki 444-8787, Japan.
C Research Center for Molecular Scale Nanoscience, Institute for Molecular Science, Myodaiji, Okazaki 444-8787, Japan.
D Corresponding author. Email: hsakurai@ims.ac.jp
Australian Journal of Chemistry 65(9) 1238-1243 https://doi.org/10.1071/CH12175
Submitted: 30 March 2012 Accepted: 9 May 2012 Published: 16 July 2012
Abstract
Aerobic oxidative homocoupling of arylboronic acid under acidic aqueous conditions (pH 4.0) using bimetallic Au/Pd alloy nanoclusters stabilized by chitosan has been investigated. It was found that a Au0.81Pd0.19 catalyst (3.1 ± 0.8 nm) exhibited superior catalytic activities as compared to monometallic Au (2.3 ± 0.3 nm) and other series of bimetallic nanoclusters, giving the corresponding biaryls in nearly quantitative yield.
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