期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 692, 期 1-3, 页码 368-374出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2006.04.054
关键词
gold nanocluster; aerobic oxidation; aryltrifluoroborate; homo-coupling
Gold(0) nanoclusters, stabilized by poly(N-vinyl-2-pyrrolidone) (Au:PVP-n), catalyzed the oxidative honio-coupling reaction of potassium aryltrifluoroborate in water under air. Catalytic activity was dependent on the size of clusters. The smallest cluster Au:PVP-1 (d(av) = 1.3 +/- 0.3 nm) gave the highest activity, while Au:PVP-7 (d(av) = 9.5 +/- 1.0 nm) did not catalyze the horno-coupling. The catalyst was reusable for several times. Positively charged surface on the An cluster, generated by the adsorption of molecular oxygen, would be the active site of the catalysis. (c) 2006 Elsevier B.V. All rights reserved.
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