Laboratoire de réactivité de surface

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  • Article dans une revue

A fullerene helical peptide: synthesis, characterization and formation of self-assembled monolayers on gold surfaces

Houssein Nasrallah, Jad Rabah, Van Bui-Thi-Tuyet, Krystyna Baczko, Hélène Fensterbank, Flavien Bourdreux, Anne-Marie Goncalves, Valérie Declerck, Souhir Boujday, Vincent Humblot, Karen Wright, Anne Vallée, Emmanuel Allard

The synthesis of a C60-peptide using "clickable" fullerene and peptide derivatives is described. The peptide is composed of a repeating sequence of -aminoisobutyric acid (Aib) and two L-Alanine (Ala) residues, promoting the formation of a helical conformation, which has been confirmed by…

New Journal of Chemistry, 2018, 42 (24), pp.19423-19432. ⟨10.1039/c8nj04599b⟩. ⟨hal-02348881⟩

  • Article dans une revue

Revealing the Interplay between Adsorbed Molecular Layers and Gold Nanoparticles by Linear and Nonlinear Optical Properties

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

Gold nanoparticles (AuNPs) chemically grafted on substrates are widely used as sensors due to their plasmonic properties. The efficiency and robustness of such sensors strongly depend on the molecular sublayer structure, which influences the distribution of AuNPs, and therefore the plasmonic…

Journal of Physical Chemistry C, 2015, 119 (30), pp.17146-17155. ⟨10.1021/acs.jpcc.5b03601⟩. ⟨hal-02111041⟩

  • Article dans une revue

Controlling Magnesium Silicates Coprecipitation Conditions: A Tool to Tune Their Surface Acid–Base Reactivity

François Payan, Albert Issa, Jean-Marc Krafft, Yannick Millot, Thomas Onfroy, Capucine Sassoye, Jean-François Hochepied, Guillaume Laugel, Hélène Lauron-Pernot

Magnesium silicates combining acidic and basic surface properties are known to be interesting as heterogeneous catalysts. Nevertheless, their catalytic performances are highly dependent on the synthesis method used. In this study, a series of magnesium silicates was synthesized for the first time…

Catalysts, 2023, 13 (11), pp.1393. ⟨10.3390/catal13111393⟩. ⟨hal-04391661⟩

  • Article dans une revue

Self-Assembly of (S)-Glutamic Acid on Ag(100): A Combined LT-STM and Ab Initio Investigation

M. Smerieri, L. Vattuone, Dominique Costa, Frederik Tielens, L. Savio

Self-assembly of org. mols. at metal surfaces is of greatest importance in nanoscience; in fact, it opens new perspectives in the field of mol. electronics and in the study of biocompatible materials. Combining an exptl. low-temp. scanning tunneling microscopy investigation with ab initio calcns.,…

Langmuir, 2010, 26 (10), pp.7208-7215. ⟨10.1021/la904331d⟩. ⟨hal-00604800⟩

  • Article dans une revue

Adsorption of l-DOPA Intercalated in Hydrated Na-Saponite Clay: A Combined Experimental and Theoretical Study

K. El Adraa, V. Timon, J.-F. Lambert, Abdel-Rahman Al-Rabaa, F. Jaber, M. Jaber, Frederik Tielens

The intercalation of L-DOPA into the interlayer space of saponite, a 2:1 phyllosilicate, and the nature of host−guest interactions are investigated by a combined experimental and theoretical approach. L-DOPA zwitterions are accommodated vertically in the interlayer region as a bilayer of partially…

Journal of Physical Chemistry C, 2012, 116, pp.26414−26421. ⟨10.1021/jp3094148⟩. ⟨hal-00808607⟩

  • Article dans une revue

Drastic Au(111) Surface Reconstruction upon Insulin Growth Factor Tripeptide Adsorption

Vincent Humblot, Anne Vallee, Ahmed Naitabdi, Frederik Tielens, Claire-Marie Pradier

Adsorption of biomolecules at metal surfaces often creates two-dimensional ordering of the adlayers. However, metal substrate reconstruction is less commonly observed, unless upon annealing of the molecule−surface system. Here, we report on the drastic room-temperature reconstruction of the Au(111…

Journal of the American Chemical Society, 2012, 134, pp.6579−6583. ⟨10.1021/ja302530q⟩. ⟨hal-00748253⟩

  • Article dans une revue

Chromium Oxide Species Supported on Silica: A Representative Periodic DFT Model

Hazar Guesmi, Frederik Tielens

The Cr/SiO2 system is investigated using periodic DFT. The model represents the amorphous character of the silica surface and allows the investigation of the effect of hydration on the Cr(VI) monomers. First, the geometry and energetics are discussed and compared with experimental data. The phase…

Journal of Physical Chemistry C, 2011, 116, pp.994-1001. ⟨10.1021/jp209680r⟩. ⟨hal-00690824⟩

  • Article dans une revue

Characterization of omega-functionalized undecanethiol mixed self-assembled monolayers on Au(111): A combined polarization modulation infrared reflection-absorption spectroscopy/X-ray photoelectron spectroscopy/periodic density functional theory study

Frederik Tielens, Dominique Costa, Vincent Humblot, Claire-Marie Pradier

The structure of undecanethiol self-assembled monolayers (SAMs) on Au(111) with -COOH and -OH tail groups has been characterized by combining experimental and theoretical techniques. The pure and mixed 1:1 SAMs were investigated. It was found using polarization modulation infrared reflection-…

Journal of Physical Chemistry C, 2008, 112 (1), pp.182-190. ⟨10.1021/jp074023c⟩. ⟨hal-01361366⟩

  • Article dans une revue

Detailed kinetic modeling study of NOx oxidation and storage and their interactions over Pt/Ba/Al2O3 monolith catalysts

Nikola Rankovic, Andre Nicolle, Patrick da Costa

The concept of nitrogen oxide storage-redn. (NSR) is a promising aftertreatment technol. for reducing NOx emissions from lean-burn engine exhaust. The present work focuses on the first two steps of the overall NSR mechanism, namely, NO to NO2 oxidn. and NOx storage. The governing storage mechanisms…

Journal of Physical Chemistry C, 2010, 114 (15), pp.7102-7111. ⟨10.1021/jp100192u⟩. ⟨hal-00604794⟩

  • Article dans une revue

Supported gold catalysts for the decomposition of VOC: Total oxidation of propene in low concentration as model reaction

Laurent Delannoy, Katia Fajerwerg, Pandian Lakshmanan, Claude Potvin, Christophe Methivier, Catherine Louis

Supported gold catalysts prepared by deposition-precipitation with urea were studied in the reaction of oxidation of propene in low concentration in a large excess of oxygen, so as to mimic the conditions of catalytic decomposition of a volatile organic compound of hydrocarbon-type (1200 ppm C3H6,…

Applied Catalysis B: Environmental, 2010, 94 (1-2), pp.117-124. ⟨hal-00604712⟩