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

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 › peer-review

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 language	English
Pages	2529-2530
Number of pages	2
Publication status	Published - 2006 Dec 1
Externally published	Yes
Event	55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama, Japan Duration: 2006 Sep 20 → 2006 Sep 22

Other

Other	55th Society of Polymer Science Japan Symposium on Macromolecules
Country	Japan
City	Toyama
Period	06/9/20 → 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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Precision synthesis of star-shaped polymers by living cationic polymerization and preparation of thermosensitive gold nanoparticles. / Yagi, Naoto; Fukuyama, Yukiko; Kontant, Seiji; Kanaoka, Shokyoku; Aoshima, Sadahito; Tsunoyama, Hironori; Tsukuda, Tatsuya; Sakurai, Hidehiro.

2006. 2529-2530 Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.

Research output: Contribution to conference › Paper › peer-review

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', Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan, 06/9/20 - 06/9/22 pp. 2529-2530.

Yagi, Naoto ; Fukuyama, Yukiko ; Kontant, Seiji ; Kanaoka, Shokyoku ; Aoshima, Sadahito ; Tsunoyama, Hironori ; Tsukuda, Tatsuya ; Sakurai, Hidehiro. / Precision synthesis of star-shaped polymers by living cationic polymerization and preparation of thermosensitive gold nanoparticles. Paper presented at 55th Society of Polymer Science Japan Symposium on Macromolecules, Toyama, Japan.2 p.

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

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.",

keywords = "Catalyst, Cationic polymerization, Gold nanoparticle, Living polymerization, Star-shaped polymer, Thermosensitive",

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

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T1 - Precision synthesis of star-shaped polymers by living cationic polymerization and preparation of thermosensitive gold nanoparticles

AU - Yagi, Naoto

AU - Fukuyama, Yukiko

AU - Kontant, Seiji

AU - Kanaoka, Shokyoku

AU - Aoshima, Sadahito

AU - Tsunoyama, Hironori

AU - Tsukuda, Tatsuya

AU - Sakurai, Hidehiro

PY - 2006/12/1

Y1 - 2006/12/1

N2 - 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.

AB - 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.

KW - Catalyst

KW - Cationic polymerization

KW - Gold nanoparticle

KW - Living polymerization

KW - Star-shaped polymer

KW - Thermosensitive

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T2 - 55th Society of Polymer Science Japan Symposium on Macromolecules

Y2 - 20 September 2006 through 22 September 2006

ER -

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

Abstract

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Keywords

ASJC Scopus subject areas

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