期刊
NANOTECHNOLOGY
卷 29, 期 16, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aaae59
关键词
iron oxide nanoparticles; superparamagnetic; MRI; contrast agents; thermal decomposition
资金
- ARC Program of the French Community of Belgium
- FNRS (Fond National de la Recherche Scientifique)
- COST Actions [TD1004, TD1402]
- ENCITE program
- EMIL program
- FRIA (Fonds de la Recherche Industrielle et Agricole)
A study of the experimental conditions to synthesize monodisperse iron oxide nanocrystals prepared from the thermal decomposition of iron(III) acetylacetonate was carried out in the presence of surfactants and a reducing agent. The influence of temperature, synthesis time and surfactant amounts on nanoparticle properties is reported. This investigation combines relaxometric characterization and size properties. The relaxometric behavior of the nanomaterials depends on the selected experimental parameters. The synthesis of iron oxide nanoparticles with a high relaxivity and a high saturation magnetization can be obtained with a short reaction time at high temperature. Moreover, the influence of surfactant concentrations determines the optimal value in order to produce iron oxide nanoparticles with a narrow size distribution. The optimized synthesis is rapid, robust and reproductive, and produces nearly monodisperse magnetic nanocrystals.
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