• Article dans une revue

Surface functionalization by covalent immobilization of an innovative carvacrol derivative to avoid fungal biofilm formation

Aïcha Gharbi, Thibaut Legigan, Vincent Humblot, Sébastien Papot, Jean-Marc Berjeaud

Carvacrol, an aromatic terpenic compound, known to be antimicrobial was grafted onto gold surfaces via two strategies based on newly-synthesized cross-linkers involving either an ester bond which can be cleaved by microbial esterases, or a covalent ether link. Surface functionalizations were…

AMB Express, 2015, 5 (1), pp.9. ⟨10.1186/s13568-014-0091-2⟩. ⟨hal-01143973⟩

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Light-induced infrared difference spectroscopy on three different forms of orange carotenoid protein: focus on carotenoid vibrations

Silvia Leccese, Adjélé Wilson, Diana Kirilovsky, Riccardo Spezia, Claude Jolivalt, Alberto Mezzetti

Orange carotenoid protein (OCP) is a photoactive carotenoprotein involved in photoprotection of cyanobacteria, which uses a keto-catorenoid as a chromophore. When it absorbs blue-green light, it converts from an inactive OCPO orange form to an activated OCPR red form, the latter being able to bind…

Photochemical & Photobiological Sciences , 2023, 22 (6), pp.1379-1391. ⟨10.1007/s43630-023-00384-7⟩. ⟨hal-04225642⟩

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Polypyrrole nanostructures modified with mono- and bimetallic nanoparticles for photocatalytic H2 generation

Xiaojiao Yuan, Diana Dragoe, Patricia Beaunier, Daniel Bahena Uribe, Laurence Ramos, Maria Guadalupe Méndez-Medrano, Hynd Remita

Conjugated polymer polypyrrole nanostructures modified with bimetallic (Pt–Ni) nanoparticles are very active for hydrogen generation and a synergetic effect is obtained by alloying Pt with Ni.

Journal of Materials Chemistry A, 2020, 8 (1), pp.268-277. ⟨10.1039/C9TA11088G⟩. ⟨hal-03437340⟩

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Covalent Grafting of Organic–Inorganic Polyoxometalates Hybrids onto Mesoporous SBA-15: A Key Step for New Anchored Homogeneous Catalysts

Richard Villanneau, Asma Marzouk, Yan Wang, Aicha Ben Djamaa, Guillaume Laugel, Anna Proust, Franck Launay

Covalent grafting of the polyoxometalate (POM) hybrid [AsW9O33{P(O)(CH2CH2CO2H)}2]5- on mesoporous NH2-functionalized SBA-15 is the first example of anchored vacant POMs in which nucleophilic oxygen atoms are still available after incorporation into the supports. Such systems are interesting…

Inorganic Chemistry, 2013, 52 (6), pp.2958 - 2965. ⟨10.1021/ic302374v⟩. ⟨hal-01563887⟩

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Amphiphilic Polyoxometalates for the Controlled Synthesis of Hybrid Polystyrene Particles with Surface Reactivity

Jennifer Lesage de la haye, Jean-Michel Guigner, Eric Marceau, Laurent Ruhlmann, Bernold Hasenknopf, Emmanuel Lacôte, Jutta Rieger

Amphiphilic organo-polyoxometalates (POMs) used in the radical emulsion polymerization of styrene allowed the preparation in aqueous medium of stable 50-100 nm polystyrene-POM composite latexes. Thanks to the presence of a trithiocarbonate group in the POM amphiphile, POMs could be covalently…

Chemistry - A European Journal, 2015, 21 (7), pp.2948-53. ⟨10.1002/chem.201405708⟩. ⟨hal-01120607⟩

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PdAg alloy nanoparticles encapsulated in N-doped microporous hollow carbon spheres for hydrogenation of CO2 to formate

Guoxiang Yang, Yasutaka Kuwahara, Kohsuke Mori, Catherine Louis, Hiromi Yamashita

Here, we report a general synthesis approach to produce PdAg nanoparticles (NPs) that are dispersed uniformly within N-doped microporous hollow carbon spheres (NMHCS) for hydrogenation of CO2 to formate. The optimized PdAg@NMHCS catalyst, which was obtained by using an optimized amount of…

Applied Catalysis B: Environmental, 2021, 283, pp.119628. ⟨10.1016/j.apcatb.2020.119628⟩. ⟨hal-03995568⟩

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Impregnation of .gamma.-Alumina with Ni(II) or Co(II) Ions at Neutral pH: Hydrotalcite-Type Coprecipitate Formation and Characterization

Jean-Baptiste d'Espinose de la Caillerie, Maggy Kermarec, Olivier Clause

The adsorption of Co(II) or Ni(II) ammine complexes from aqueous solutions onto y-alumina at neutral or near neutral pH (7 < pH < 8.2) and ambient temperature is investigated as a function of the ion concentration in the impregnating solutions, the contact and aging times, and the drying…

Journal of the American Chemical Society, 1995, 117 (46), pp.11471-11481. ⟨10.1021/ja00151a010⟩. ⟨hal-03978150⟩

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Dimerization of Uracil in a simulated Mars-like UV radiation environment

Laura Rouquette, Fabien Stalport, Hervé Cottin, Cyril Colas, Thomas Georgelin, Naïla Chaouche-Mechidal, Jerome Lasne, Sara Mahfouf, Franćois Raulin, Laura Selliez, Cyril Szopa, Patrice Coll

The search for organic molecules at the surface of Mars is a key objective in astrobiology, given that many organic compounds are possible biosignatures and their presence is of interest with regard to the habitability of Mars. Current environmental conditions at the martian surface are harsh and…

Astrobiology, 2020, 20 (11), pp.1363-1376. ⟨10.1089/ast.2019.2157⟩. ⟨hal-03032302⟩

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Structured hybrid nanoparticles via surface-initiated ATRP of methyl methacrylate from ordered mesoporous silica

F. Audouin, H. Bias, P. Pasetto, P. Beaunier, C. Boissiere, C. Sanchez, M. Save, B. Charleux

Structured hybrid nanoparticles were synthesized via surface-initiated atom transfer radical polymerization of MMA from ordered mesoporous silica (QMS) nanoparticles with various morphologies. The design of the QMS particles was adjusted to target either spherical core-shell or cylindrical…

Macromolecular Rapid Communications, 2008, 29 (11), pp.914-921. ⟨10.1002/marc.200800179⟩. ⟨hal-01563804⟩

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Hybrid Hydrophobin/Gold Nanoparticles: Synthesis and Characterization of New Synthetic Probes for Biological Applications

Jane Politi, Luca de Stefano, Paola Giardina, Sandra Casale, Ilaria Rea, Jolanda Spadavecchia

Sensors, 2018, Lecture Notes in Electrical Engineering, 431, pp.169-176. ⟨10.1007/978-3-319-55077-0_23⟩. ⟨hal-03984209⟩