• Article dans une revue

Simple procedure for vacant POM-stabilized palladium (0) nanoparticles in water: structural and dispersive effects of lacunary polyoxometalates

Richard Villanneau, A. Roucoux, P. Beaunier, D. Brouri, A. Proust

Metallic palladium nanoparticles have been generated by hydrogenation with H2 of solutions of several non organometallic Pd II-derivatives of heteropolytungstates, at ambient temperature and atmospheric pressure. These nanoparticles have been characterized by various techniques: 31 P NMR and Raman…

RSC Advances, 2014, 4 (50), pp.26491-26498. ⟨10.1039/C4RA03104K⟩. ⟨hal-04564836v2⟩

• Article dans une revue

Design and Analytical Performances of a Diclofenac Biosensor for Water Resources Monitoring

Yacine Mazouzi, Antoine Miche, Alexis Loiseau, Bruno Beito, Christophe Méthivier, Dietmar Knopp, Michèle Salmain, Souhir Boujday

Because the broadly consumed pain killer diclofenac (DCF) is a recognized pollutant, monitoring of its concentration is routinely performed in surface waters. As a valuable alternative to chromatographic and immunochemical assays, we developed a piezoelectric immunosensor to quantify DCF, first in…

ACS Sensors, 2021, 6 (9), pp.3485-3493. ⟨10.1021/acssensors.1c01607⟩. ⟨hal-03351021⟩

• Article dans une revue

Biosensing Extracellular Vesicle Subpopulations in Neurodegenerative Disease Conditions

Yacine Mazouzi, Fadoua Sallem, Francesca Farina, Alexis Loiseau, Natayme Rocha Tartaglia, Morgane Fontaine, Atul Parikh, Michèle Salmain, Christian Neri, Souhir Boujday

Extracellular vesicles (EVs) are secreted nanoparticles that are involved in intercellular communication and that modulate a wide range of biological processes in normal and disease conditions. However, EVs are highly heterogeneous in terms of origin in the cell, size, and density. As a result,…

ACS Sensors, 2022, 7 (6), pp.1657-1665. ⟨10.1021/acssensors.1c02658⟩. ⟨hal-03791750⟩

• Article dans une revue

Dual Thermo- and pH-Responsive N -Cyanomethylacrylamide-Based Nano-Objects Prepared by RAFT-Mediated Aqueous Polymerization-Induced Self-Assembly

Nicolas Audureau, Fanny Coumes, Jean-Michel Guigner, Clément Guibert, François Stoffelbach, Jutta Rieger

We report the straightforward synthesis of dual stimuli-responsive nano-objects using a RAFT-mediated polymerization-induced self-assembly (PISA) process in water. The key to complex and tunable responsiveness was the copolymerization of N-cyanomethylacrylamide, providing UCST-type polymers, with a…

Macromolecules, 2022, 55 (24), pp.10993-11005. ⟨10.1021/acs.macromol.2c01953⟩. ⟨hal-03988200⟩

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Investigating the Mukaiyama-type epoxidation reaction of alkenes with Cr(III) salophen catalysts: A confrontation between experiments and DFT calculations

Arnaud Marvilliers, Jean-Baptiste Harlé, Franck Launay, Sébastien Blanchard, Anne Gauvin-Bialecki, Hélène Gérard, Richard Villanneau

This study aimed at the complete elucidation of the mechanism of the Mukaiyama-type alkene epoxidation reaction using the [(salophen)CrIIICl] precatalyst, by combining spectroscopic (UV–visible and EPR) studies, catalytic reactivity and quantum chemical modeling. These studies performed in parallel…

Journal of Catalysis, 2024, 434, pp.115526. ⟨10.1016/j.jcat.2024.115526⟩. ⟨hal-04579211⟩

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Conducting polymer nanostructures for photocatalysis under visible

Srabanti Ghosh, Natalie Amoin Kouame, Laurence Ramos, Samy Remita, Alexandre Dazzi, Ariane Deniset-Besseau, Patricia Beaunier, Fabrice Goubard, Pierre-Henri Aubert, Hynd Remita

Nature Materials, 2015, pp.505-511. ⟨10.1038/nmat4220⟩. ⟨hal-02979988⟩

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Polyol-Made Luminescent and Superparamagnetic β-NaY0.8Eu0.2F4@γ-Fe2O3 Core-Satellites Nanoparticles for Dual Magnetic Resonance and Optical Imaging

Lotfi Ben Tahar, Darine Abi Haidar, Michel Boissiere, Walid Mnasri, Lotfi Ben Tahar, Patricia Beaunier, Michel Boissière, Olivier Sandre, Souad Ammar

Red luminescent and superparamagnetic β-NaY0.8Eu0.2F4@γ-Fe2O3 nanoparticles, made of a 70 nm-sized β-NaY0.8Eu0.2F4 single crystal core decorated by a 10 nm-thick polycrystalline and discontinuous γ-Fe2O3 shell, have been synthesized by the polyol process. Functionalized with citrate ligands they…

Nanomaterials, 2020, 10 (2), pp.393. ⟨10.3390/nano10020393⟩. ⟨hal-02490053v2⟩

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Conversion of xylene over mordenites: an operando infrared spectroscopy study of the effect of Na+

Pascale Massiani, Olivier Marie, Frédéric Thibault-Starzyk

A series of progressively proton-exchanged sodium mordenite samples was studied by operando infrared spectroscopy during xylene conversion. This unique, powerful tool allowed us to characterize the species adsorbed to the surface during catalysis and to follow the evolution of the active sites as…

Journal of Catalysis, 2004, 230, pp.28-37. ⟨hal-00126974⟩

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Controlling the Nanocontact Nature and the Mechanical Properties of a Silica Nanoparticle Assembly

J. Avice, C. Boscher, G. Vaudel, G. Brotons, V. Juvé, M. Edely, C. Methivier, Vitali Goussev, P. Belleville, H. Piombini, P. Ruello

Elaborating advanced nanomaterials based on the assembly of nanoparticles (NPs) is a versatile route for targeting and tuning a wide variety of properties like optical, magnetic, and electrical properties or sensing. This route usually employs a so-called soft chemistry which has the advantage of…

Journal of Physical Chemistry C, 2017, 121 (42), pp.23769-23776. ⟨10.1021/acs.jpcc.7b08404⟩. ⟨hal-02536813⟩

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Enhancing the magnetic anisotropy of maghemite nanoparticles via the surface coordination of molecular complexes

Yoann Prado, Niéli Daffé, Aude Michel, Thomas Georgelin, Nader Yaacoub, Jean-Marc Greneche, Fadi Choueikani, Edwige Otero, Philippe Ohresser, Marie-Anne Arrio, C. Cartier Dit Moulin, Ph. Sainctavit, Benoit Fleury, Vincent Dupuis, Laurent Lisnard, Jérôme Fresnais

Superparamagnetic nanoparticles are promising objects for data storage or medical applications. In the smallest—and more attractive—systems, the properties are governed by the magnetic anisotropy. Here we report a molecule-based synthetic strategy to enhance this anisotropy in sub-10-nm…

Nature Communications, 2015, 6, pp.10139. ⟨10.1038/ncomms10139⟩. ⟨hal-01390543⟩