Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 109, Issue -, Pages 236-243Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2013.03.053
Keywords
Magnetic iron oxides; Nanocrystals; Solvothermal synthesis; Surface functionalization; Polyethyleneimine; Poly(L-lactide)
Funding
- Serbian Ministry of Science, Education and Technological Development [III 45004]
- Korean Institute of Science and Technology - Institute of Technical Science of SASA joint research project Advanced Materials for Biomedical Applications
- National Research Foundation of Korea [R11-2008-0061852]
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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. (C) 2013 Elsevier B.V. All rights reserved.
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