Laboratoire de réactivité de surface

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  • Article dans une revue

Identification of a Ubiquinone-Ubiquinol Quinhydrone Complex in Bacterial Photosynthetic Membranes and Isolated Reaction Centers by Time-Resolved Infrared Spectroscopy

Alberto Mezzetti, Jean-Francois Paul, Winfried Leibl

Ubiquinone redox chemistry is of fundamental importance in biochemistry, notably in bioenergetics. The bi-electronic reduction of ubiquinone to ubiquinol has been widely studied, including by Fourier transform infrared (FTIR) difference spectroscopy, in several systems. In this paper, we have…

International Journal of Molecular Sciences, 2023, International Journal of Molecular Sciences, 24 (6), pp.5233. ⟨10.3390/ijms24065233⟩. ⟨hal-04133205⟩

  • Article dans une revue

Light-adapted charge-separated state of photosystem II: structural and functional dynamics of the closed reaction center

Melinda Magyar, Alberto Mezzetti, Parveen Akhtar, Qingjun Zhu, Yanan Xiao, Guangye Han, Stefano Santabarbara, Jian-Ren Shen, Petar Lambrev, Győző Garab, Gábor Sipka

Photosystem II (PSII) uses solar energy to oxidize water and delivers electrons for life on Earth. The photochemical reaction center of PSII is known to possess two stationary states. In the open state (PSIIO), the absorption of a single photon triggers electron-transfer steps, which convert PSII…

The Plant cell, 2021, 33 (4), pp.1286-1302. ⟨10.1093/plcell/koab008⟩. ⟨hal-04025235⟩

  • Chapitre d'ouvrage

Aerobic Selective Oxidation of Alcohols and Alkanes over Hydroxyapatite-Based Catalysts

Guylène Costentin, Franck Launay

Selective oxidation catalysis is of prime importance for the production of many key intermediates. The control of selectivity in the presence of gaseous oxygen is quite challenging and requires the development of efficient catalysts. Thanks to their large composition range, resulting from the…

Doan Pham Minh. Design and Applications of Hydroxyapatite-Based Catalysts, Wiley, 2022, ⟨10.1002/9783527830190.ch6⟩. ⟨hal-03727897⟩

  • Article dans une revue

Mapping amine functions at nanosurfaces using colloidal gold conjugation

Nicolas Debons, Dounia Dems, Christophe Méthivier, Christophe Calers, Antoine Miche, Thibaud Coradin, Carole Aimé

The functionalization of the surface of nanomaterials is a key approach to improve their stability, tune their reactivity and confer them specific properties. However, the mapping of functional groups at the nanometer scale remains difficult to achieve. This concerns not only the chemical nature of…

Applied Surface Science, 2021, 566, pp.150689. ⟨10.1016/j.apsusc.2021.150689⟩. ⟨hal-03349845v2⟩

  • Thèse

Development of heterogeneous chemoenzymatic catalysts based on Metal-Organic Framework for the selective and eco-friendly amination of alcohols, Développement de catalyseurs hétérogènes chimioenzymatiques basés sur l'utilisation de polymères de coordination poreux dédiés à l'amination éco-compatible d'alcools

Yifan Zan

The aim of this work was to develop a heterogeneous chemoenzymatic catalyst based on the use of Metal-Organic Frameworks (MOFs) as support for the eco-friendly amination of alcohols in a one-pot cascade synthesis. The cascade process is divided into two steps: an alcohol oxidation chemically…, L'objectif de ce travail était de développer un catalyseur chimio-enzymatique hétérogène basé sur l'utilisation de polymères de coordination poreux (ou Metal-Organic Framework: MOF) comme supports pour l'amination durable d'alcools à travers un procédé en cascade réalisé en une…

Catalysis. Sorbonne Université, 2023. English. ⟨NNT : 2023SORUS518⟩. ⟨tel-04772445⟩

  • Article dans une revue

Chiral Ammonium-Capped Rhodium(0) Nanocatalysts: Synthesis, Characterization, and Advances in Asymmetric Hydrogenation in Neat Water

Elodie Guyonnet Bil É, Elodie Cortelazzo-Polisini, Audrey Denicourt-Nowicki, Rita Sassine, Franck Launay, Alain Roucoux

Optically active amphiphilic compounds derived from N-methylephedrine, N-methylprolinol, or cinchona derivatives possessing bromide or chiral lactate counterions were efficiently used as protective agents for rhodium(0) nanoparticles. The full characterization of these surfactants and the obtained…

ChemSusChem, 2012, 5, pp.91-101. ⟨10.1002/cssc.201100364⟩. ⟨hal-00750000⟩

  • Communication dans un congrès

Photochemistry of organic molecules in the Solar System: experimental studies outside the International Space Station. The cases of glycine, and nucleobases

Hervé Cottin, Giovanni Strazzulla, M. Dobrijevic, Frances Westall, Gaelle Coussot, A. Le Postollec, Nicolas Fray, Didier Chaput, Richard C. Quinn, . Andrew Mattioda, Giuseppe Baratta, Mario Accolla, Thomas Georgelin, Fabien Stalport, Laura Rouquette, Cyril Szopa, Kafila Saiagh, Jodie Bellila, Katia Grira, Andreas Elsaesser, Nathalie Carrasco, Avinash-Vicholous Dass, M. E. Palumbo

Solar UV radiation is a major source of energy for initiating chemical evolution towards complex organic structures, but it can also photo-dissociate even the most complex molecules. Thus, solar UV can erase the organic traces of past life at the surface of planets, such as Mars, destroy organic…

42nd COSPAR Scientific Assembly, Jul 2018, Pasadena, Californie, United States. ⟨hal-01901917⟩

  • Article dans une revue

Polyoxotungstates-stabilized gold nanoparticles: how to transfer from an aqueous suspension to CH3CN ?, Nanoparticules d'or stabilisées par des polyoxotungstates : comment passer d'une suspension aqueuse à CH3CN ?

Jean-Baptiste Harlé, Élise Péruse, Jimika Hassanaly, Dalil Brouri, Anna Proust, Audrey Denicourt-Novicky, Alain Roucoux, Anne Gauvin-Bialecki, Richard Villanneau

The present study aims to evaluate available methods for preparing suspensions of gold nanoparticles stabilized by polyoxometalates (POMs@AuNPs) in CH3CN, a solvent commonly used in oxidation reactions. POMs@AuNPs are successfully synthesized in CH3CN using three different approaches: i) in situ…

European Journal of Inorganic Chemistry, 2025, 28 (22), pp.e202500196. ⟨10.1002/ejic.202500196⟩. ⟨hal-05078866⟩

  • 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

Acidic Osteoid Templates the Plywood Structure of Bone Tissue

Marc Robin, Chakib Djediat, Arnaud Bardouil, Niki Baccile, Camille Chareyron, Ivo Zizak, Peter Fratzl, Mohamed Selmane, Bernard Haye, Isabelle Genois, Jean‐marc Krafft, Guylène Costentin, Thierry Azaïs, Franck Artzner, Marie‐madeleine Giraud-Guille, Paul Zaslansky, Nadine Nassif

Bone is created by osteoblasts that secrete osteoid after which an ordered texture emerges, followed by mineralization. Plywood geometries are a hallmark of many trabecular and cortical bones, yet the origin of this texturing in vivo has never been shown. Nevertheless, extensive in vitro work…

Advanced Science, 2023, pp.2304454. ⟨10.1002/advs.202304454⟩. ⟨hal-04384750⟩