Thermosensitive Gold Nanoclusters Stabilized by Well-Defined Vinyl Ether Star Polymers: Reusable and Durable Catalysts for Aerobic Alcohol Oxidation

J. Am. Chem. Soc., 129 (40), 12060 -12061, 2007. 10.1021/ja0735599 S0002-7863(07)03559-7
Web Release Date: September 18, 2007

Thermosensitive Gold Nanoclusters Stabilized by Well-Defined Vinyl Ether Star Polymers: Reusable and Durable Catalysts for Aerobic Alcohol Oxidation

Shokyoku Kanaoka, Naoto Yagi, Yukiko Fukuyama, Sadahito Aoshima,* Hironori Tsunoyama, Tatsuya Tsukuda, and Hidehiro Sakurai

Department of Macromolecular Science, Graduate School of Science, Osaka University, Toyonaka 560-0043, Japan, Department of Materials Molecular Science, Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8585, Japan, CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan, and Research Center for Molecular-Scale Nanoscience, Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8787, Japan

aoshima@chem.sci.osaka-u.ac.jp

Received May 18, 2007

Abstract:

Au nanoclusters of less than 4 nm with a narrow size distribution were prepared and supported in thermosensitive vinyl ether star polymers obtained by living cationic polymerization. The thermosensitivity of the star polymers permitted easy separation of the clusters from the reaction mixture without any negative aggregation. Thus, the Au clusters could be recovered for reuse several times to induce alcohol oxidation with similar reactivity in each run.

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