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 journalArticlepeer-review

46 Citations (Scopus)


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 languageEnglish
Pages (from-to)3262-3266
Number of pages5
JournalACS Applied Materials and Interfaces
Issue number8
Publication statusPublished - 2013 Apr 24


  • Janus particles
  • magnetic response
  • phase separation
  • polymer particles
  • self-assembly

ASJC Scopus subject areas

  • Materials Science(all)


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