Journal
ACTA BIOMATERIALIA
Volume 3, Issue 2, Pages 233-242Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.actbio.2006.10.006
Keywords
superparamagnetic nanocrystalline ferrites; functionalization; conjugation; drug delivery
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Superparamagnetic nickel ferrite nanoparticles functionalized with polyvinyl alcohol, polyethylene oxide and polymethacrylic acid (PMAA) polymers and subsequently conjugated with doxorubicin anti-cancer drug are studied for their use as a magnetic carrier for drug delivery. Fourier transform infrared spectroscopy enabled examination of the ability of the nanoparticles to be functionalized with polymers and conjugated with doxorubicin drug. The functionalized polymer-coated nanocrystalline nickel ferrites retain the magnetic characteristics of non-functionalized nanocrystalline nickel ferrites (superparamagnetism, absence of hysteresis, remanence and coercivity at room temperature), encouraging their application as a magnetic carrier for drug delivery. The PMAA-coated nanoferrites are demonstrated as being a potentially superior magnetically targeted drug carrier based on FTIR results and drug release kinetics in the absence and presence of an external magnetic field. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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