Institut des Sciences Moléculaires d'Orsay



dimanche 29 novembre

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Accueil > Équipes scientifiques > Biophysique, biophotonique > Nano-objets et surfaces sensibles > Photoactive surfaces and nanoparticles

Photoactive surfaces and nanoparticles

from photophysics to energy or environment applications

par Meallet-Renault Rachel - 27 octobre 2014 (modifié le 28 avril 2015)

In the last decade, fluorescent nanoobjects have received increasing interest for their high potential in biology and biochemistry. They are especially attractive for sensing, imaging and biomedical applications. Based on RAFT polymerisation and miniemulsion we have developed a new strategy to design fluorescent nanoobjects where the fluorophore is copolymerised in the hydrophobic centre of the polymeric micelle (collaboration with Dr G. Clavier from ENS Cachan, UMR 8531 and with Dr. J. Rieger at Institut Parisien de Chimie Moléculaire - UMR 8232). BODIPY was chosen as the fluorophore since it exhibits attractive spectroscopic characteristics (emission spectra tuneable from green to red, high fluorescence quantum yields). Such nanoparticles are versatile platforms for sensing or imaging. Indeed their shell can be easily functionalized by any molecule bearing an amine function. Our expertise relies on photophysics and photochemistry : from the NP design to their characterization as well as their application for E.coli internal dynamics (collaboration Dr B. Sclavi from ENS Cachan, UMR 8113). In collaboration with Dr D. Prim from Institut Lavoisier de Versailles (UMR 8180) and Dr S. Amigoni from Nice Sophia-Antipolis, LPMC (UMR 7336), we are now developing photoactive and photosensitive surfaces to detect bacteria adhesion. Finally we aim at new surfaces and particles for photovoltaic devices (collaboration with Dr E. Allard, Dr K. Wright. from Institut Lavoisier de Versailles UMR 8180 and with Dr. G. Clavier from ENS Cachan, UMR 8531).

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