Sylvie MARGUET

Research topics:

Light-Matter Interaction, Nanosciences

Publications:

• Google scholar
• Researchgate
• PUBLONS (web of science) : K-2750-2012
• ORCID : 0000-0002-8670-1320
• HAL-CEA (archives ouvertes, publications et communications >2001)

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[2008 – present] ∎ Gold nanoparticles for plasmonics and healthcare

The aim of this research is to harness light-matter interactions in precisely controlled gold nanohybrids. These studies are carried out as part of highly stimulating collaborations with teams of experts (see the list of funded collaborations below) to uncover unexpected properties for a variety of applications related to energy, the environment, and health.

To this end, our work focuses on the synthesis and assembly of high-quality gold nanoparticles (Au-NPs), whose morphologies (sizes, shapes) and coatings are optimized to generate light, electrical charges, or heat depending on the intended application. Au-NPs are produced via colloidal chemistry using seeding and controlled growth methods. “Hybrid” nanoparticles consist of a gold nanoparticle and another component, which may be a molecule (an antibody, a water molecule, etc.), a semiconductor (TiO₂, etc.), a quantum dot (CdSe, etc.), or a catalyst (Pd, Pt, etc.). The nature and quality of the interface between the gold nanoparticle and its immediate environment govern the exchange of energy, charge, and heat. It is therefore a key parameter in the development of these nanohybrids, which we have made our specialty.

Left: Schematic of an optically active hybrid nanoparticle. Center: Various shapes of nanoparticles. Right: 2D self-assembly of gold nanocubes conducive to the formation of electromagnetic hot spots (nano-sources of light and/or charge)

⇨ More: Lien vers la thématique

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Fundings (ongoing) 

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FUNDED COLLABORATIONS (past and current)

1. R. Bachelot, P. M. Adam, J. Plain, UTT Troyes, L2n CNRS-ERL 7004
2. L. Douillard , C. Fiorini, S. Vassant, F. Charra, CEA Saclay, SPEC UMR 3680, équipe LEPO
3. O. Soppera, IS2M, Mulhouse,
4. E. Le Moal, E. Boer-Duchemin, G. Dujardin, Orsay , ISMO, équipe Nanophys
5. B. Palpant, CentraleSupelec, Paris-Saclay, LuMIn
6. R. Pansu (ENS Paris-Saclay , anciennement PPSM)
7. G. Bousquet, Ch. Leboeuf, Bobigny, UFR SMBH, Université Paris 13, Hopital Avicennes
8. A. Crut, Natalia Del Fatti et al, Lyon, ILM, équipe FemtoNanoOptics
9. M. Treguer Delapierre, Bordeaux, ICMCB
10. S. Bidault, Paris ESPCI, Institut Langevin UMR7587
11. G. Bellot, Montpellier, CBS

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[1988-2008] 20 years ∎ Photophysics and Photochemistry – at the interface between experiment and theory

For 20 years, from 1988 (DEA, photopolymerization, J.P. Fouassier) to 2008 (thematic mobility), my research field was photochemistry and photophysics.

I joined the CNRS in 1993, following a thesis at the experiment and theory interface (J.C. Mialocq / P. Millié) and a postdoc in pulsed radiolysis (P. Neta, USA). Together with three main colleagues (P. Millié, D. Markovitsi, and T. Gustavsson), my research at the interface of time-resolved spectroscopy and theoretical chemistry focused primarily on the two themes:

• [1993-2001] Photophysics of organized molecular systems
• [2001-2008] Interaction of UV radiation with DNA

I thus had the opportunity to study a wide range of photo-induced reactions and to develop expertise in electron transfer and energy transfer (in the singlet and triplet states) in molecular systems.

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Curriculum Vitae :

CNRS senior researcher (since 1993)