Surface characterizations of fluorescent-functionalized silica nanoparticles: from the macroscale to the nanoscale

Jorice Samuel 1, * Olivier Racurt 1 Olivier Poncelet 1 Aurélien Auger 1 Wai-Li Ling 2 Peter Cherns 3 Didier Grunwald 4 Olivier Tillement 5
* Auteur correspondant
1 DTNM - Département des Technologies des NanoMatériaux
2 IBS - UMR 5075 - Institut de biologie structurale
3 CEA-LETI - Laboratoire d'Electronique et des Technologies de l'Information
4 ANTE-INSERM U836, équipe 4, Muscles et pathologies
Transduction du signal : signalisation calcium, phosphorylation et inflammation
5 LPCML - Laboratoire de Physico-Chimie des Matériaux Luminescents
Abstract : Fluorescent silica nanoparticles are widely used for various applications from mechanical reinforcement to biology. In many cases, their surface has to be tailored. Herein fluorescent silica nanoparticles are synthesized by a reverse micro-emulsion process and functionalized by silane coupling agents owning amino and thiol groups. The functionalization is then characterized by macroscopic well-known methods (zeta potential, hydrophilic to hydrophobic ratio, etc.) and an original method based onto TEM observations of the contrast between the silica core and the metallic ions chelated by the functional groups grafted onto the surface is also introduced. This method reveals that the functionalization is effective and that it occurs by ''nano domains.'' It is therefore possible to characterize the functionalization by in situ observations. Finally, the characterized nanoparticles are incorporated into a PMMA thin film. The fluorescence of the nanoparticles allows the monitoring of the level of dispersion of the nanoparticles within the polymer and confirms all the other characterizations.
Keywords : Silica Nanoparticles Functionalization Coupling agent Dispersion Characterization
Type de document :
Article dans une revue
Journal of Nanoparticule Research, 2010, 12 (6), pp.2255-2265
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https://www.hal.inserm.fr/inserm-00763700
Contributeur : Nathalie Roux-Buisson <>
Soumis le : mardi 11 décembre 2012 - 12:19:29
Dernière modification le : lundi 11 février 2019 - 16:51:17
Document(s) archivé(s) le : dimanche 18 décembre 2016 - 00:03:19

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Jorice Samuel, Olivier Racurt, Olivier Poncelet, Aurélien Auger, Wai-Li Ling, et al.. Surface characterizations of fluorescent-functionalized silica nanoparticles: from the macroscale to the nanoscale. Journal of Nanoparticule Research, 2010, 12 (6), pp.2255-2265. 〈inserm-00763700〉

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