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A Facile Approach for Transferring Hydrophobic Magnetic Nanoparticles into Water‐Soluble Particles
Author(s) -
Cheng Ziyong,
Liu Shuhua,
Gao Haitao,
Tremel Wolfgang,
Ding Ning,
Liu Ruili,
Beines Patrick W.,
Knoll Wolfgang
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800085
Subject(s) - aqueous solution , magnetic nanoparticles , nanoparticle , polymer , copolymer , solvent , polymer chemistry , chemical engineering , chemistry , poly(n isopropylacrylamide) , hydrophobic effect , materials science , nanotechnology , organic chemistry , engineering
A novel, easy and high‐efficient method is described for transferring hydrophobic magnetic Fe 3 O 4 nanoparticles from organic to aqueous solution by wrapping a thermo‐responsive and photocrosslinkable poly( N ‐isopropylacrylamide) (PNIPAm) terpolymer around the particles. The wrapping procedure is introduced by the co‐nonsolvent transition of PNIPAm in the mixing solvent and the polymer can dissolve in water carrying Fe 3 O 4 nanoparticles by noncovalent interaction. The temperature‐dependant and magnetic properties of the water‐soluble particles are characterized in this paper.