New ultrasmall iron-oxide nanoparticles with high magnetisation as potential T1-MRI contrast agents for Molecular Imaging

Details New ultrasmall iron-oxide nanoparticles with high magnetisation as potential T1-MRI contrast agents for Molecular Imaging New ultrasmall iron-oxide nanoparticles with high magnetisation as potential T1-MRI contrast agents for Molecular Imaging

2006-11-09

arxiv.org/abs/cond-mat/0611243v1

Physics

Condensed Matter

Materials Science

27 pages, 6 figures, 4 tables. Submitted to: Journal of Materials Chemistry

Scientific paper

Here we report on the synthesis of very small gamma-Fe2O3 nanoparticles (5 nm) presenting very narrow particle size distribution and exceptionally high saturation magnetisation. The synthesis has been carried out in an organic medium with subsequent transfer to an aqueous solution at physiological pH. The structural and magnetic properties were kept unaltered after the solvent exchange. NMR relaxometric measurements show the potential of these particles as specific reporters for magnetic resonance molecular imaging.

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