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Collective Behavior of Magnetic Nanoparticles in Polyelectrolyte Brushes
Author(s) -
Choi Won San,
Koo Hye Young,
Kim Ju Young,
Huck Wilhelm T. S.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801423
Subject(s) - polyelectrolyte , materials science , brush , nanoparticle , magnetic nanoparticles , magnetic field , nanotechnology , chemical engineering , ion , polymer , composite material , organic chemistry , chemistry , physics , quantum mechanics , engineering
Polyelectrolyte brushes loaded with magnetic nanoparticles can be formed through the reaction of immobilized Fe 2+/3+ ions in the brush. These particles show very unusual magnetic properties, not normally associated with such small nanoparticles. Upon application of an external magnetic field, the brushes showed reversible dimensional changes.