publication . Article . 2013

Synthesis and Surface Modification of Spindle-Type Magnetic Nanoparticles: Gold Coating and PEG Functionalization

Mendez-Garza, Juan; Wang, Biran; Madeira, Alexandra; Di-Giorgio, Christophe; Bossis, Georges;
Open Access
  • Published: 01 Jan 2013 Journal: Journal of Biomaterials and Nanobiotechnology, volume 4, pages 222-228 (issn: 2158-7027, eissn: 2158-7043, Copyright policy)
  • Publisher: Scientific Research Publishing, Inc,
Abstract
In this paper, we describe the synthesis of gold coated spindle-type iron nanoparticles and its surface modification by a thiolated fluorescently-labelled polyethylene glycol (PEG) polymer. A forced hydrolysis of ferric salts in the presence of phosphate ions was used to produce α-Fe2O3 spindle-type particles. The oxide powders were first reduced to α-iron under high temperature and controlled dihydrogen atmosphere. Then, the resulting magnetic spindle-type particles were covered by a shell of gold. The formation of the core@shell structure was driven by a redox-transmetalation reaction between iron(0) at the surface of particles and a gold(III) salt. Protected ...
Subjects
free text keywords: Chemical engineering, PEG ratio, Inorganic chemistry, Magnetic nanoparticles, Polymer, chemistry.chemical_classification, chemistry, Hematite, visual_art.visual_art_medium, visual_art, Polyethylene glycol, chemistry.chemical_compound, Materials science, Nanoparticle, Surface modification, Oxide, fluorescent-PEG, Core@shell, spindle-type, magnetic particles, gold coating, fluorescent-PEG., [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]
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publication . Article . 2013

Synthesis and Surface Modification of Spindle-Type Magnetic Nanoparticles: Gold Coating and PEG Functionalization

Mendez-Garza, Juan; Wang, Biran; Madeira, Alexandra; Di-Giorgio, Christophe; Bossis, Georges;