Abstract
Cubic monodisperse MFe2O4 ferrite nanoparticles (M = Fe, Co, and Mn) with tunable sizes between 7 and 20 nm and a narrow size distribution have been achieved in a one step synthesis by thermal decomposition of Fe(III), Co (II), and Mn(II) oleates. These nanoparticles have been functionalized with dimercaptosuccinic acid (DMSA), 11-mercaptoundecanoic acid (MUA), and bis(carboxymethyl)(2-maleimidylethyl)ammonium 4-toluenesulfonate (MATS) to grant them aqueous stability and the possibility for further functionalization with different biomolecules. Their structural, magnetic, and colloidal properties have also been studied to determine their chemical and physical properties and the degree of stability under physiological conditions that will determine their future use in biomedical applications.
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Abbreviations
- NP:
-
Nanoparticles
- MUA:
-
Dimercaptosuccinic acid: DMSA: 11-mercaptoundecanoic acid
- MATS:
-
bis(carboxymethyl)(2-maleimidylethyl)ammonium 4-toluenesulfonate
- DNA:
-
Deoxyribonucleic acid
- RNA:
-
Ribonucleic acid
- RES:
-
Reticuloendothelial system
- rpm:
-
Revolutions per minute
- DMSO:
-
Dimethyl sulfoxide
- KOH:
-
Potassium hydroxide
- HNO3 :
-
Nitric acid
- DMF:
-
N,N-dimethylformamide
- ICP-OES:
-
Inductively coupled plasma optical emission spectrometry
- TEM:
-
Transmission electron microscopy
- TGA:
-
Thermal gravimetric analysis
- FTIR:
-
Fourier transform infrared
- XRD:
-
X-ray diffraction
- DLS:
-
Dynamic light scattering
- PBS:
-
Phosphate buffered saline
- Fe(ole)3 :
-
Iron (III) oleate
- Mn(ole)2 :
-
Manganese (II) oleate
- Co(ole)2 :
-
Cobalt (II) oleate
- H c :
-
coercivity
- M r :
-
Remanent magnetization
- M s :
-
Saturation magnetic moment
- RT:
-
Room temperature
- Fig:
-
Figure
- PZC:
-
Point of zero charge
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Acknowledgments
This work was supported by the Spanish Ministry of Science and Innovation (MAT2008-01489 to SVV MAT2009-14578-C03-01 for JFM, MAT2011-23641 to MPM, and CSD2007-00010 to MPM) and the Regional Government from Madrid (S009/MAT-1726 to MPM).
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Cabrera, L.I., Somoza, Á., Marco, J.F. et al. Synthesis and surface modification of uniform MFe2O4 (M = Fe, Mn, and Co) nanoparticles with tunable sizes and functionalities. J Nanopart Res 14, 873 (2012). https://doi.org/10.1007/s11051-012-0873-x
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DOI: https://doi.org/10.1007/s11051-012-0873-x