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: Chapter in Book/Report/Conference proceedingConference contribution

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
Title of host publicationPolymer Preprints, Japan
Pages2529-2530
Number of pages2
Volume55
Edition2
Publication statusPublished - 2006
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CountryJapan
CityToyama
Period06/9/2006/9/22

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Keywords

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

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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. In Polymer Preprints, Japan (2 ed., Vol. 55, pp. 2529-2530)