Precision synthesis of star-shaped polymers by living cationic polymerization and preparation of thermosensitive gold nanoparticles

Naoto Yagi, Yukiko Fukuyama, Seiji Kontant, Shokyoku Kanaoka, Sadahito Aoshima, Hironori Tsunoyama, Tatsuya Tsukuda, Hidehiro Sakurai

Research output: Contribution to conference › Paper

Abstract

We synthesized various thermosensitive star-shaped polymer by living cationic polymerization with various Lewis acids in the presence of an added base. Thermosensitive gold nanoparticles (∼3nm) were prepared using thermosensitive star-shaped polymers with oxyethylene side chains as a template. The thermosensitive gold nanoparticles catalyzed aerobic alcohol oxidation in water at room temperature. A feature of these polymer-stabilized gold nanoparticles was their high durability even in an oxidation reaction. These particles can readily be separated from oxidation reaction mixture using thermosensitivity of star-shaped polymer. In addition, the particles redissolved in water at room temperature after recovery. Reuse of the particles in aerobic alcohol oxidation is currently under investigation.

Original languageEnglish
Pages2529-2530
Number of pages2
Publication statusPublished - 2006 Dec 1
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 20 → 2006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/20 → 06/9/22

Keywords

  • Catalyst
  • Cationic polymerization
  • Gold nanoparticle
  • Living polymerization
  • Star-shaped polymer
  • Thermosensitive

ASJC Scopus subject areas

  • Engineering(all)

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    Yagi, N., Fukuyama, Y., Kontant, S., Kanaoka, S., Aoshima, S., Tsunoyama, H., Tsukuda, T., & Sakurai, H. (2006). Precision synthesis of star-shaped polymers by living cationic polymerization and preparation of thermosensitive gold nanoparticles. 2529-2530. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.