title: A new approach to follow the formation of iron oxide nanoparticles synthesized by thermal decomposition.
abstract: A novel way has been proposed to follow the formation of nanocrystalline magnetite. Iron oxide nanoparticles were synthesized by the thermal decomposition of Fe(acac)(3) in the presence of oleic acid and oleylamine surfactants at high temperature. The species produced during the synthetic process are characterized through their effects on the proton nuclear magnetic relaxation of the reaction medium and their sizes. As shown by transmission electron microscopy, photon correlation spectroscopy and x-ray diffraction, the diameter of nano-objects increases when the time synthesis is longer. Magnetic properties evaluated by nuclear magnetic resonance (NMRD profiles, T(1) and T(2) measurements) were correlated with the size parameters.
authors.affiliation: Department of General, Organic and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, B-7000 Mons, Belgium. sarah.belaid@umons.ac.be
authors.forename: Sarah
authors.initials: S
authors.lastname: Belaïd
authors.forename: Sophie
authors.initials: S
authors.lastname: Laurent
authors.forename: Marjorie
authors.initials: M
authors.lastname: Vermeech
authors.forename: Luce
authors.initials: L
authors.lastname: Vander Elst
authors.forename: David
authors.initials: D
authors.lastname: Perez-Morga
authors.forename: Robert N
authors.initials: RN
authors.lastname: Muller
mesh_terms: D005290:Ferric Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D007501:Iron / Q000032:analysis; D009682:Magnetic Resonance Spectroscopy; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D012996:Solutions; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D005290:Ferric Compounds; D012996:Solutions; C000499:ferric oxide; D007501:Iron