Investigation of the grafting rate of organic molecules on the surface of magnetite nanoparticles as a function of the coupling agent
作者： B DONNIO , G POURROY , D GUILLON , S BEGIN , T DAOU
DOI: 10.1016/J.SNB.2006.11.020
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摘要: Abstract The design and the functionalisation of nanoparticles is a promising way to elaborate new functional materials, with combined or coupled properties (magnetic, optical, optoelectronic …). In this context, direct binding organic conjugated molecules (stilbene derivative) onto surface monodisperse Fe 3 O 4 magnetic has been studied. Monodisperse have synthesized by adjusting conditions precipitation growth then stilbene derivatives grafted these using either phosphonate carboxylate groups as coupling agents. functionalised characterized before after grafting several techniques (XRD, UV, TEM). Studies demonstrated that agent allows higher rate than agent. via are less stable those mainly due strong P–O–Fe bonding. coated magnetite retain their intrinsic properties.
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