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<dc:title xml:lang="fr">Synthèse et fonctionnalisation de nano-ferrites pour le traitement par hyperthermie</dc:title>
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<dc:subject xml:lang="fr">Nanoparticules d’oxyde de fer</dc:subject>
<dc:subject xml:lang="fr">Dopage</dc:subject>
<dc:subject xml:lang="fr">Coprécipitation</dc:subject>
<dc:subject xml:lang="fr">Décomposition thermique</dc:subject>
<dc:subject xml:lang="fr">Hyperthermie magnétique</dc:subject>
<dc:subject xml:lang="en">Iron oxide nanoparticles</dc:subject>
<dc:subject xml:lang="en">Doping</dc:subject>
<dc:subject xml:lang="en">Coprecipitation</dc:subject>
<dc:subject xml:lang="en">Thermal decomposition</dc:subject>
<dc:subject xml:lang="en">Magnetic hyperthermia</dc:subject>
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<dcterms:abstract xml:lang="fr">Les nanoparticules (NPs) d’oxyde de fer susceptibles de présenter un comportement superparamagnétique ont connu ces dernières années un intérêt considérable en vue de leur application en nanomédecine. Leurs propriétés magnétiques et biocompatibilités permettent notamment leur utilisation à des fins de diagnostic (IRM, imagerie optique et nucléaire…) et aussi de thérapie (hyperthermie, nano vectorisation…). L’objectif de cette thèse a été d’étudier l’influence des paramètres de synthèse sur les propriétés finales des NPs d’oxyde de fer magnétique dopé au zinc. Cette étude avait plus particulièrement pour but l’optimisation des méthodes de synthèse qui sont la coprécipitation et la décomposition thermique. A ce sujet, la caractérisation des NPs par diverses techniques a permis notamment d’étudier les liens entre la taille, la forme, la composition chimique d’une part, et les propriétés magnétiques des NPs d’autre part. Dans un deuxième temps, la fonctionnalisation des NPs qui est une étape indispensable pour assurer leurs biocompatibilités a été réalisée, elle était suivie par des mesures d’hyperthermie magnétique.</dcterms:abstract>
<dcterms:abstract xml:lang="en">The superparamagnetic iron oxide nanoparticles (NPs) are a class of nanomaterials with a high interest in the nanomedicine field. Their magnetic properties and biocompatibility recommend them as potential candidates for diagnostics purposes (MRI, optical or nuclear Imaging ...) and therapy (hyperthermia, nanovectorization...). The aim of this thesis was to study the influence of the synthesis parameters on the final properties of magnetic zinc doped iron oxide nanoparticles. Two synthesis methods were considered, the co-precipitation and the thermal decomposition. The characterization of the obtained nanoparticles by complementary techniques allowed us to propose a consistent relationship between the size, shape and chemical composition on the one hand, and the magnetic properties of the nanoparticles on the other hand. The functionalization of NPs, that is a crucial step for ensuring their biocompatibility and use in magnetic hyperthermia, was also realised and the hyperthermia properties were measured on some typical nanoparticles.</dcterms:abstract>
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