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Superparamagnetic Hybrid Nanocylinders
Author(s) -
Zhang M.,
Estournès C.,
Bietsch W.,
Müller A. H. E.
Publication year - 2004
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200400064
Subject(s) - materials science , superparamagnetism , atom transfer radical polymerization , polymer , polymerization , nanoparticle , acrylic acid , polymer chemistry , acrylate , copolymer , carboxylate , radical polymerization , amphiphile , chemical engineering , magnetization , nanotechnology , organic chemistry , magnetic field , composite material , chemistry , physics , quantum mechanics , engineering
Well‐defined cylindrical polymer brushes with poly(acrylic acid) (PAA) cores and poly( n ‐butyl acrylate) (P n BA) shells have been synthesized via a combination of anionic polymerization and atom transfer radical polymerization. These amphiphilic brushes are unimolecular cylindrical micelles and can be used as single‐molecular templates for the synthesis of inorganic nanoparticles, because the carboxylic acid groups (or carboxylate groups, after neutralization) in the polymer core can coordinate with various metal ions such as Fe 3+ and Fe 2+ . Ultrafine magnetic nanoparticles were successfully synthesized within the core of these polymer brushes, as confirmed by various characterization techniques. Mössbauer spectroscopy and magnetization measurements indicate that the hybrid nanocylinders exhibit interesting superparamagnetic behavior.