Polymer Janus particles containing block-copolymer stabilized magnetic nanoparticles

Hiroshi Yabu; Masaaki Kanahara; Masatsugu Shimomura; Toshihiko Arita; Koji Harano; Eiichi Nakamura; Takeshi Higuchi; Hiroshi Jinnai

doi:10.1021/am4003149

Polymer Janus particles containing block-copolymer stabilized magnetic nanoparticles

Hiroshi Yabu, Masaaki Kanahara, Masatsugu Shimomura, Toshihiko Arita, Koji Harano, Eiichi Nakamura, Takeshi Higuchi, Hiroshi Jinnai

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

In this report, we show a simple route to fabricate Janus particles having magnetic nanoparticles inside them, which can respond and rotate along to magnetic fields. By solvent evaporation from the tetrahydrofran solution of polymer stabilized γ-Fe₂O₃ nanoparticles, polystyrene (PS), and polyisoprene containing water, aqueous dispersion of Janus microparticles were successfully prepared, and the γ-Fe₂O ₃ nanoparticles were selectively introduced into the PS phase. We demonstrate rotation and accumulation of Janus particles by using a neodymium magnet.

Original language	English
Pages (from-to)	3262-3266
Number of pages	5
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	8
DOIs	https://doi.org/10.1021/am4003149
Publication status	Published - 2013 Apr 24

Keywords

Janus particles
magnetic response
phase separation
polymer particles
self-assembly

ASJC Scopus subject areas

Materials Science(all)

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10.1021/am4003149

Cite this

Polymer Janus particles containing block-copolymer stabilized magnetic nanoparticles. / Yabu, Hiroshi; Kanahara, Masaaki; Shimomura, Masatsugu; Arita, Toshihiko; Harano, Koji; Nakamura, Eiichi; Higuchi, Takeshi; Jinnai, Hiroshi.

In: ACS Applied Materials and Interfaces, Vol. 5, No. 8, 24.04.2013, p. 3262-3266.

Research output: Contribution to journal › Article › peer-review

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AU - Harano, Koji

AU - Nakamura, Eiichi

AU - Higuchi, Takeshi

AU - Jinnai, Hiroshi

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AB - In this report, we show a simple route to fabricate Janus particles having magnetic nanoparticles inside them, which can respond and rotate along to magnetic fields. By solvent evaporation from the tetrahydrofran solution of polymer stabilized γ-Fe2O3 nanoparticles, polystyrene (PS), and polyisoprene containing water, aqueous dispersion of Janus microparticles were successfully prepared, and the γ-Fe2O 3 nanoparticles were selectively introduced into the PS phase. We demonstrate rotation and accumulation of Janus particles by using a neodymium magnet.

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KW - magnetic response

KW - phase separation

KW - polymer particles

KW - self-assembly

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Polymer Janus particles containing block-copolymer stabilized magnetic nanoparticles

Abstract

Keywords

ASJC Scopus subject areas

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