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Synthesis of Magnetic Microspheres with Controllable Structure via Polymerization‐Triggered Self‐Positioning of Nanocrystals
Author(s) -
Xia Ao,
Hu Jianhua,
Wang Changchun,
Jiang Donglin
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700117
Subject(s) - materials science , polymerization , polymer , magnetite , microsphere , magnetic nanoparticles , composite number , nanocrystal , chemical engineering , nanotechnology , self assembly , polymer chemistry , nanoparticle , composite material , engineering , metallurgy
Abstract A facile and novel method for the synthesis of magnetite–polymer hybrid microspheres with controllable structure is reported. On the basis of the interactions between polymers and magnetic nanocrytals, which are coated with a primary oleic acid layer, a variety of magnetic microspheres with well‐tailored structure are fabricated by carefully modulating polymerization and selecting components of composite microspheres; the evolvement of hierarchical structure, and the magnetic properties of microspheres were systematically studied. Importantly, the mechanism of polymerization‐triggered self‐positioningof magnetic nanocrystals is investigated.