The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles

Title
The solvothermal synthesis of magnetic iron oxide nanocrystals and the preparation of hybrid poly(L-lactide)-polyethyleneimine magnetic particles
Authors
Zoran StojanovicMojca Otonicar이종욱Magdalena M. Stevanovic황민태이관희최종훈Dragan Uskokovic
Keywords
Magnetic iron oxides; Nanocrystals; Solvothermal synthesis; Surface functionalization; Polyethyleneimine; Poly(l-lactide)
Issue Date
2013-09
Publisher
Colloids and surfaces. B, Biointerfaces
Citation
VOL 109, 236-243
Abstract
We report a simple and green procedure for the preparation of magnetic iron oxide nanocrystals via solvothermal synthesis. The nanocrystal synthesis was carried out under mild conditions in the water–ethanol–oleic acid solvent system with the use of the oleate anion as a surface modifier of nanocrystals and glucose as a reducing agent. Specific conditions for homogenous precipitation achieved in such a reaction system lead to the formation of uniform high-quality nanocrystals down to 5 nm in diameter. The obtained hydrophobic nanocrystals can easily be converted to hydrophilic magnetic nanoparticles by being immobilized in a poly(L-lactide)–polyethyleneimine polymeric matrix. These hybrid nano-constructs may find various biomedical applications, such as magnetic separation, gene transfection and/or magnetic resonance imaging.
URI
http://pubs.kist.re.kr/handle/201004/45176
ISSN
09277765
Appears in Collections:
KIST Publication > Article
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