A facile approach for transferring hydrophobic magnetic nanoparticles into water-soluble particles

作者：Cheng Ziyong; Liu Shuhua; Gao Haitao; Tremel Wolfgang; Ding Ning; Liu Ruili; Beines Patrick W; Knoll Wolfgang^*

来源：Macromolecular Chemistry and Physics, 2008, 209(11): 1145-1151.

DOI：10.1002/macp.200800085

• crosslinking
• magnetic nanoparticles
• photopolymerization
• stimuli-sensitive polymers
• water-soluble polymers

A novel, easy and high-efficient method is described for transferring hydrophobic magnetic Fe3O4 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 Fe3O4 nanoparticles by noncovalent interaction. The temperature-dependant and magnetic properties of the water-soluble particles are characterized in this paper.

• 出版日期2008-6-5