• Article dans une revue

Engineering of Antimicrobial Surfaces by Using Temporin Analogs to Tune the Biocidal/antiadhesive Effect

Pierre-Carl Oger, Christophe Piesse, Ali Ladram, Vincent Humblot

Proliferation of resistant bacteria on biomaterials is a major problem leading to nosocomial infections. Due to their broad-spectrum activity and their ability to disrupt bacterial membranes through a rapid membranolytic mechanism, antimicrobial peptides (AMPs) are less susceptible to the…

Molecules, 2019, 24 (4), pp.814. ⟨10.3390/molecules24040814⟩. ⟨hal-02052750⟩

• Article dans une revue

Electrochemical deposition of ZnO thin films in aprotic ionic liquids: Effect of the cationic alkyl-chain-length

Rita Khalil, Mirella Azar, Ibrahim Bou Malham, Mireille Turmine, Vincent Vivier

Zinc oxide (ZnO) is a semiconductor with various physicochemical properties allowing its use in a wide range of technological applications. The aim of this work is to study nanocrystalline ZnO thin-film deposited using zinc salt which is dissolved in pure ionic liquids (ILs). The latter play a dual…

Journal of Ionic Liquids, 2022, 2 (1), pp.100031. ⟨10.1016/j.jil.2022.100031⟩. ⟨hal-03664909⟩

• Article dans une revue

Electron spectroscopies of 3-hydroxyflavone and 7-hydroxyflavone in MCM-41 silica nanoparticles and in acetonitrile solutions. Experimental data and DFT/TD-DFT calculations

Anton Landström, Ari Paavo Seitsonen, Silvia Leccese, Hagop Abadian, Jean-François Lambert, Stefano Protti, Isabella Concina, Alberto Mezzetti

The data presented here concern the photophysical characterization of luminescent MCM-41 nanoparticles doped with 3-hydroxyflavone and 7-hydroxyflavone, two fluorescent flavonoids. UV-Vis and fluorescence spectra obtained on freshly-prepared samples and aged (2 months exposed to air) samples are…

Data in Brief, 2021, 34, pp.106630 -. ⟨10.1016/j.dib.2020.106630⟩. ⟨hal-03494036⟩

• Article dans une revue

Ce- and Y-Modified Double-Layered Hydroxides as Catalysts for Dry Reforming of Methane: On the Effect of Yttrium Promotion

Katarzyna Świrk, Magnus Rønning, Monika Motak, Patricia Beaunier, Patrick da Costa, Teresa Grzybek

Ce- and Y-promoted double-layered hydroxides were synthesized and tested in dry reforming of methane (CH4/CO2 = 1/1). The characterization of the catalysts was performed using X-ray fluorescence (XRF), X-ray diffraction (XRD), N2 sorption, temperature-programmed reduction in H2 (TPR-H2),…

Catalysts, 2019, 9 (1), pp.56. ⟨10.3390/catal9010056⟩. ⟨hal-02057457⟩

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The Prevailing Role of Hotspots in Plasmon-Enhanced Sum-Frequency Generation Spectroscopy

Laetitia Dalstein, Christophe Humbert, Maroua Ben Haddada, Souhir Boujday, Grégory Barbillon, Bertrand Busson

The plasmonic amplification of nonlinear vibrational sum frequency spectroscopy (SFG) at the surfaces of gold nanoparticles is systematically investigated by tuning the incident visible wavelength. The SFG spectra of dodecanethiol-coated gold nanoparticles chemically deposited on silicon are…

Journal of Physical Chemistry Letters, 2019, 10, pp.7706-7711. ⟨10.1021/acs.jpclett.9b03064⟩. ⟨hal-02380088⟩

• Article dans une revue

A Hydrothermal-Sedimentary Context for the Origin of Life

Frances Westall, Keyron Hickman-Lewis, Nancy Hinman, Pascale Gautret, Kathleen A Campbell, Jean-Gabriel Bréhéret, Frédéric Foucher, Axelle Hubert, Stephanie Sorieul, Avinash Vicholous Dass, Terence P. Kee, Thomas Georgelin, André Brack

Critical to the origin of life are the ingredients of life, of course, but also the physical and chemical conditions in which prebiotic chemical reactions can take place. These factors place constraints on the types of Hadean environment in which life could have emerged. Many locations, ranging…

Astrobiology, 2018, 18 (3), pp.259-293. ⟨10.1089/ast.2017.1680⟩. ⟨hal-01740060⟩

• Communication dans un congrès

Direct insight into the activation mechanism of Fe and Sb catalysts by operando TEM and XAS techniques

Aliou Sadia Traore, Walid Baaziz, Zhou Yong, Andrei Khodakov, Mirella Virginie, E. Marceau, Vitaly Ordomsky, Sharmin Sharna, Valérie Briois, Ovidiu Ersen

20th International Microscopy Congress, Sep 2023, Busan (Corée), South Korea. ⟨hal-04523342⟩

• 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

When RNA meets montmorillonite: Influence of the pH and divalent cations

Luís de Oliveira, Pollyana Trigueiro, Baptiste Rigaud, Edson da Silva-Filho, Josy Osajima, Maria Fonseca, Jean-François Lambert, Thomas Georgelin, Maguy Jaber

Applied Clay Science, 2021, 214, pp.106234. ⟨10.1016/j.clay.2021.106234⟩. ⟨hal-03990019⟩

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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⟩