A Facile Approach for Transferring Hydrophobic Magnetic Nanoparticles into Water-Soluble Particles

✍ Scribed by Ziyong Cheng; Shuhua Liu; Haitao Gao; Wolfgang Tremel; Ning Ding; Ruili Liu; Patrick W. Beines; Wolfgang Knoll

• Book ID: 102485735
• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 280 KB
• Volume: 209
• Category: Article
• ISSN: 1022-1352
• DOI: 10.1002/macp.200800085

✦ Synopsis

Abstract

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.

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