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13 results on '"Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP)"'

1. Enhanced passivity of Cr-Fe-Co-Ni-Mo multi-component single-phase face-centred cubic alloys: design, production and corrosion behaviour

Author

Wang, Xueying, Mercier, Dimitri, Danard, Yolande, Rieger, Thomas, Perrière, Loïc, Laurent-Brocq, Mathilde, Guillot, Ivan, Maurice, Vincent, Marcus, Philippe, Institut de Recherche de Chimie Paris (IRCP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), Institut de Chimie et des Matériaux Paris-Est (ICMPE), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), European Project: 741123,CIMNAS, Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC)

Subjects
General Chemical Engineering, microstructure, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], pitting corrosion, General Materials Science, passivity, General Chemistry, production, [CHIM.MATE]Chemical Sciences/Material chemistry, Multi-principal element alloys, thermodynamic diagrams
Abstract

The vast composition space of the Cr-Fe-Co-Ni-Mo system was explored by massive thermodynamic calculations in order to design and characterize multi-component single-phase fcc alloys optimized in Cr and Mo content and having enhanced passivity. Adding up to 15 at.% Mo while retaining the fcc single-phase is possible, which is unprecedented. Cr is confirmed to be a prerequisite to ensure self-protection against corrosion by passivation. Adding Mo up to 10 at.% tremendously enhances the resistance to passivity breakdown in Cl--containing aggressive environment. Newly designed quinary alloys, Cr25Fe25Co5Ni40Mo5 and Cr15Fe10Co5Ni60Mo10 (at.%), show superior resistance to localized corrosion.

Published
2022

2. Competition between shear and biaxial extensional viscous dissipation in the expansion dynamics of Newtonian and rheo-thinning liquid sheets

Author

Laurent Bouteiller, Laurence Ramos, Ameur Louhichi, Srishti Arora, Dimitris Vlassopoulos, Carole-Ann Charles, Christian Ligoure, Laboratoire Charles Coulomb (L2C), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Foundation for Research and Technology - Hellas (FORTH), Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), and Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn], Work (thermodynamics), Computational Mechanics, FOS: Physical sciences, 02 engineering and technology, 01 natural sciences, Viscoelasticity, 010305 fluids & plasmas, Physics::Fluid Dynamics, Viscosity, 0103 physical sciences, Newtonian fluid, Fluid Flow and Transfer Processes, Physics, Mechanical Engineering, Fluid Dynamics (physics.flu-dyn), Physics - Fluid Dynamics, Mechanics, Dissipation, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Drop impact, Shear (sheet metal), Condensed Matter::Soft Condensed Matter, Mechanics of Materials, Extensional viscosity, 0210 nano-technology, [PHYS.COND.CM-SCM]Physics [physics]/Condensed Matter [cond-mat]/Soft Condensed Matter [cond-mat.soft]
Abstract

International audience; When a drop of fluid hits a small solid target of comparable size, it expands radially until reaching a maximum diameter and subsequently recedes. In this work, we show that the expansion process of liquid sheets is controlled by a combination of shear (on the target) and biaxial extensional (in the air) deformations. We propose an approach toward a rational description of the phenomenon for Newtonian and viscoelastic fluids by evaluating the viscous dissipation due to shear and extensional deformations, yielding a prediction of the maximum expansion factor of the sheet as a function of the relevant viscosity. For Newtonian systems, biaxial extensional and shear viscous dissipation are of the same order of magnitude. On the contrary, for thinning solutions of supramolecular polymers, shear dissipation is negligible compared to biaxial extensional dissipation and the biaxial thinning extensional viscosity is the appropriate quantity to describe the maximum expansion of the sheets. Moreover, we show that the rate-dependent biaxial extensional viscosities deduced from drop impact experiments are in good quantitative agreement with previous experimental data and theoretical predictions for various viscoelastic liquids.

Published
2021

3. Visualizing the dynamics of exported bacterial proteins with the chemogenetic fluorescent reporter FAST

Author

Alice Lebreton, Yankel Chekli, Dario Dell'Arciprete, Arnaud Gautier, Chenge Li, Jean-François Allemand, Nicolas Desprat, Christophe Beloin, Caroline Peron-Cane, Jean-Marc Ghigo, Génétique des Biofilms - Genetics of Biofilms, Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), École Doctorale Bio Sorbonne Paris Cité [Paris] (ED BioSPC), Université Sorbonne Paris Cité (USPC)-Université de Paris (UP), Laboratoire de physique de l'ENS - ENS Paris (LPENS (UMR_8023)), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut de biologie de l'ENS Paris (UMR 8197/1024) (IBENS), Département de Biologie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), ABCD : Biophysique des Biomolécules, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-École normale supérieure - Paris (ENS Paris), Laboratoire des biomolécules (LBM UMR 7203), Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Département de Chimie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Chimie Moléculaire de Paris Centre (FR 2769), Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM), Processus d'Activation Sélective par Transfert d'Energie Uni-électronique ou Radiatif (UMR 8640) (PASTEUR), Département de Chimie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Fondation pour la Recherche Médicale FRM-DEQ20180339185, Fondation pour la Recherche Médicale FRM-AJE20131128944, Inserm ATIP-Avenir, Mairie de Paris (programme Émergences – Recherche médicale), Marie Sklodowska-Curie Action MSCA-IF-2018 (ERC), ANR-10-IDEX-0001,PSL,Paris Sciences et Lettres(2010), ANR-18-IDEX-0001,Université de Paris,Université de Paris(2018), ANR-10-LABX-0062,IBEID,Integrative Biology of Emerging Infectious Diseases(2010), ANR-19-CE13-0026,ADOBE,Dynamique de l'adhésion au niveau de l'enveloppe bactérienne(2019), European Project: ERC-2016-CoG-724705 ,FLUOSWITCH, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), École Doctorale Bio Sorbonne Paris Cité [Paris] (ED562 - BioSPC), Université Sorbonne Paris Cité (USPC)-Université Paris Cité (UPCité), Laboratoire de physique de l'ENS - ENS Paris (LPENS), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Département de Physique de l'ENS-PSL, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Institut de biologie de l'ENS Paris (IBENS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Département de Physique de l'ENS-PSL, Chimie Moléculaire de Paris Centre (FR 2769), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département de Chimie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Lebreton, Alice, Initiative d'excellence - Paris Sciences et Lettres - - PSL2010 - ANR-10-IDEX-0001 - IDEX - VALID, Université de Paris - - Université de Paris2018 - ANR-18-IDEX-0001 - IDEX - VALID, Integrative Biology of Emerging Infectious Diseases - - IBEID2010 - ANR-10-LABX-0062 - LABX - VALID, Dynamique de l'adhésion au niveau de l'enveloppe bactérienne - - ADOBE2019 - ANR-19-CE13-0026 - AAPG2019 - VALID, Pushing the frontiers of biological imaging with genetically encoded fluorescence switches - FLUOSWITCH - ERC-2016-CoG-724705 - INCOMING, Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Sorbonne Université (SU)-École normale supérieure - Paris (ENS Paris), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Département de Biologie - ENS Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)-Sorbonne Université (SU)-École normale supérieure - Paris (ENS Paris)

Subjects
0301 basic medicine, Science, 030106 microbiology, Cell, [SDV.BC.BC]Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], [SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, medicine.disease_cause, Article, Bacterial cell structure, 03 medical and health sciences, Bacterial Proteins, Live cell imaging, Escherichia coli, [SDV.BC.BC] Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], medicine, Bacteria, microcolonies, fluorescent reporters, FAST complex, invasin, bacterial envelope, surface proteins, Secretion, Adhesins, Bacterial, 030304 developmental biology, Intimin, 0303 health sciences, Multidisciplinary, Membranes, biology, 030306 microbiology, Chemistry, Escherichia coli Proteins, Cell Membrane, Bacteriology, [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, biology.organism_classification, Listeria monocytogenes, [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Cell biology, Bacterial adhesin, Luminescent Proteins, 030104 developmental biology, medicine.anatomical_structure, Luminescent Measurements, Genetic engineering, Medicine, Pathogens, [SDV.MP.BAC] Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology, Chemical tools, Microbial genetics, Bacteria
Abstract

Bacterial proteins exported to the cell surface play key cellular functions. However, despite the interest to study the localisation of surface proteins such as adhesins, transporters or hydrolases, monitoring their dynamics in live imaging remains challenging, due to the limited availability of fluorescent probes remaining functional after secretion. In this work, we used the Escherichia coli intimin and the Listeria monocytogenes InlB invasin as surface exposed scaffolds fused with the recently developed chemogenetic fluorescent reporter protein FAST. Using both membrane permeant (HBR-3,5DM) and non-permeant (HBRAA-3E) fluorogens that fluoresce upon binding to FAST, we demonstrated that fully functional FAST can be exposed at the cell surface and used to specifically tag the external side of the bacterial envelop in both diderm and monoderm bacteria. Our work opens new avenues to study the organization and dynamics of the bacterial cell surface proteins.

Published
2020

4. Current developments of nanoscale insight into corrosion protection by passive oxide films

Author

Vincent Maurice, Philippe Marcus, Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC), European Project: 741123,CIMNAS, Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC)

Subjects
Surface analysis, Materials science, 020209 energy, Oxide, Nanometer scale, chemistry.chemical_element, FOS: Physical sciences, Nanotechnology, 02 engineering and technology, DFT, Corrosion, chemistry.chemical_compound, Chromium, Organic inhibitors, 0202 electrical engineering, electronic engineering, information engineering, [CHIM]Chemical Sciences, General Materials Science, Nanoscopic scale, Metallic materials, ComputingMilieux_MISCELLANEOUS, Condensed Matter - Materials Science, Corrosion protection, Oxide layers, Materials Science (cond-mat.mtrl-sci), [CHIM.MATE]Chemical Sciences/Material chemistry, Intergranular corrosion, 021001 nanoscience & nanotechnology, Durability, chemistry, Physical chemistry, Grain boundaries, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Passive films, Nanometre, Grain boundary, 0210 nano-technology
Abstract

Oxide passive films are a key for the durability of metals and alloys components as well as a central issue in corrosion science and engineering. Herein, we discuss current developments of the nanometer and sub-nanometer scale knowledge of the barrier properties and adsorption properties of passive oxide films brought by recent model experimental and theoretical investigations. The discussed aspects include (i) the chromium enrichment and its homogeneity at the nanoscale in passive films formed on Cr-bearing alloys such as stainless steel, (ii) the corrosion properties of grain boundaries in early intergranular corrosion before penetration and propagation in the grain boundary network, and (iii) the interaction of organic inhibitor molecules with incompletely passivated metallic surfaces. In all three cases, key issues are highlighted and future developments that we consider as most relevant are identified., Comment: Current Opinion in Solid State and Materials Science, Elsevier, final accepted preprint

Published
2018

5. Comprehensive structural assignment of glycosaminoglycan oligo- and polysaccharides by protein nanopore

Author

Parisa Bayat, Charlotte Rambaud, Bernard Priem, Matthieu Bourderioux, Mélanie Bilong, Salomé Poyer, Manuela Pastoriza-Gallego, Abdelghani Oukhaled, Jérôme Mathé, Régis Daniel, Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherches sur les Macromolécules Végétales (CERMAV), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Laboratoire Analyse, Modélisation et Matériaux pour la Biologie et l'Environnement (LAMBE - UMR 8587), and Université d'Évry-Val-d'Essonne (UEVE)-Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY)

Subjects
Multidisciplinary, Sulfates, Chondroitin Sulfates, Dermatan Sulfate, General Physics and Astronomy, Nanopore GAG, General Chemistry, General Biochemistry, Genetics and Molecular Biology, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, Nanopores, Polysaccharides, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], Glycosaminoglycans
Abstract

Glycosaminoglycans are highly anionic functional polysaccharides with information content in their structure that plays a major role in the communication between the cell and the extracellular environment. The study presented here reports the label-free detection and analysis of glycosaminoglycan molecules at the single molecule level using sensing by biological nanopore, thus addressing the need to decipher structural information in oligo- and polysaccharide sequences, which remains a major challenge for glycoscience. We demonstrate that a wild-type aerolysin nanopore can detect and characterize glycosaminoglycan oligosaccharides with various sulfate patterns, osidic bonds and epimers of uronic acid residues. Size discrimination of tetra- to icosasaccharides from heparin, chondroitin sulfate and dermatan sulfate was investigated and we show that different contents and distributions of sulfate groups can be detected. Remarkably, differences in α/β anomerization and 1,4/1,3 osidic linkages can also be detected in heparosan and hyaluronic acid, as well as the subtle difference between the glucuronic/iduronic epimers in chondroitin and dermatan sulfate. Although, at this stage, discrimination of each of the constituent units of GAGs is not yet achieved at the single-molecule level, the resolution reached in this study is an essential step toward this ultimate goal.

Published
2022
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6. Can we enhance passivity with a surface finish? Spectroscopic and electrochemical analysis on 316L stainless steel

Author

Shova Neupane, Sandrine Zanna, Antoine Seyeux, Lorena H. Klein, Vincent Maurice, Philippe Marcus, Institut de Recherche de Chimie Paris (IRCP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), and European Project: 741123,CIMNAS

Subjects
Corrosion, Surface analysis, 316L Stainless steel, Renewable Energy, Sustainability and the Environment, Surface finish, Materials Chemistry, Electrochemistry, Passivity, [CHIM.MATE]Chemical Sciences/Material chemistry, Condensed Matter Physics, [CHIM.OTHE]Chemical Sciences/Other, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials
Abstract

International audience; The effects of surface finish by mechanical polishing, vibratory polishing, and high-temperature annealing were studied on 316L stainless steel by combining microscopic and spectroscopic analysis of the surface morphology and composition and electrochemical analysis of the corrosion resistance. Compared to mechanical polishing, vibratory finishing promotes passivity at the active-passive transition in acid solution and enhances resistance to chloride-induced passivity breakdown. Cr and Mo enrichments in the native oxide film increase owing to preferential iron etching. The bilayer structure develops a thicker Cr(III) oxide inner barrier layer and an outer exchange layer further enriched in Cr(III) hydroxide and Mo(IV/VI) oxides. The Fe-rich weak sites of passivity are reinforced. High-temperature annealing in reducing hydrogen environment enables us to fully reconstruct the cold-worked layers left by mechanical or vibratory finishing, thus allowing us to expose the bulk microstructure at the topmost surface. The benefits brought by vibratory finishing are lost upon reducing the initial native oxide. The re-formed native oxide develops a bilayer structure with similar Cr and Mo enrichments as that obtained from mechanical polishing and no beneficial effects on passivity. The results provide comprehensive insight into how the passivity of stainless steel can be enhanced by surface enrichment engineering.

Published
2022

7. Atomic Scale Insight into Corrosion Inhibition: DFT Study of 2- Mercaptobenzimidazole on Locally De-Passivated Copper Surfaces

Author

Fatah, Chiter, Costa, Dominique, Maurice, Vincent, Marcus, Philippe, Institut de Recherche de Chimie Paris (IRCP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), and European Project: 741123,CIMNAS

Subjects
Renewable Energy, Sustainability and the Environment, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, Organic inhibitor, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, DFT, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Passivation, Localized corrosion, 0103 physical sciences, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Materials Chemistry, Electrochemistry, 010306 general physics, 0210 nano-technology, Copper
Abstract

A key factor for effective inhibition by organic molecules of the initiation of localized corrosion by pitting is their ability to form a protective organic film in locally de-passivated zones exposing the bare metal next to the oxide-covered surface. Herein, based on quantum chemical DFT calculations, we study the chemistry of the interface between 2-mercaptobenzimidazole (MBI) and a copper surface partially covered by a Cu2O passive oxide film. The results show the adaptability of the molecule to adsorb strongly on the different zones, oxide or metal, of a locally de-passivated surface. However, differences in the local adsorption configurations, involving covalent bonding with H-bonding depending on oxide or metal and on conformer, thione or thiolate, lead to the formation of an inhomogeneous organic film. Increasing order of local adsorption strength is oxide walls < metal surface < oxide surface < oxide edges for the thione species, whereas there is no significant difference of local adsorption strength for the thiolate species. Our results suggest that both species of MBI can heal the oxygen and copper low coordinated sites as well as can protect the exposed metal surface, thus enhancing the barrier properties of the passivated surface even when locally defective.

Published
2021

8. Dynamic control of Purcell enhanced emission of erbium ions in nanoparticles

Author

David Hunger, Philippe Goldner, Shuping Liu, Hugues de Riedmatten, Chetan Deshmukh, Bernardo Casabone, Diana Serrano, Thomas Hümmer, Alban Ferrier, Institut de Ciencies Fotoniques [Castelldefels] (ICFO), Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC), Max-Planck-Institut für Quantenoptik (MPQ), Max-Planck-Gesellschaft, Physikalisches Institut [Karlsruhe] (PHI), Karlsruher Institut für Technologie (KIT), and Universitat Politècnica de Catalunya. Doctorat en Fotònica

Subjects
Quantum information, Science, FOS: Physical sciences, General Physics and Astronomy, Physics::Optics, 02 engineering and technology, Erbium--Optical properties, 01 natural sciences, General Biochemistry, Genetics and Molecular Biology, Article, law.invention, law, 0103 physical sciences, [CHIM]Chemical Sciences, ddc:530, Spontaneous emission, 010306 general physics, Physics, Quantum optics, Quantum Physics, Quantum network, Multidisciplinary, Física [Àrees temàtiques de la UPC], business.industry, General Chemistry, 021001 nanoscience & nanotechnology, Optical microcavity, Nanostructures, Física quàntica, Quantum technology, Qubit, Optoelectronics, Physics::Accelerator Physics, Photonics, Quantum Physics (quant-ph), 0210 nano-technology, business
Abstract

The interaction of single quantum emitters with an optical cavity enables the realization of efficient spin-photon interfaces, an essential resource for quantum networks. The dynamical control of the spontaneous emission rate of quantum emitters in cavities has important implications in quantum technologies, e.g. for shaping the emitted photons waveform, for generating quantum entanglement, or for driving coherently the optical transition while preventing photon emission. Here we demonstrate the dynamical control of the Purcell enhanced emission of a small ensemble of erbium ions doped into nanoparticles. By embedding the doped nanoparticles into a fully tunable high finesse fiber based optical microcavity, we show that we can tune the cavity on- and out of-resonance by controlling its length with sub-nanometer precision, on a time scale more than two orders of magnitude faster than the natural lifetime of the erbium ions. This allows us to shape in real time the Purcell enhanced emission of the ions and to achieve full control over the emitted photons' waveforms. This capability opens prospects for the realization of efficient nanoscale quantum interfaces between solid-state spins and single telecom photons with controllable waveform, and for the realization of quantum gates between rare-earth ion qubits coupled to an optical cavity., 12 pages, 7 figures, submitted

Published
2021

9. Catalysis and specificity of the polycondensation of aminopropyltrimethoxysilane on nucleic acids

Author

Cédric Przybylski, Patrick A. Curmi, Olek Maciejak, Marie-Jeanne Clément, Nathalie Jarroux, Hervé M. Cheradame, Laboratoire Analyse, Modélisation et Matériaux pour la Biologie et l'Environnement (LAMBE - UMR 8587), Université d'Évry-Val-d'Essonne (UEVE)-Institut de Chimie du CNRS (INC)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-CY Cergy Paris Université (CY), Structure et activité des biomolécules normales et pathologiques (SABNP), Université d'Évry-Val-d'Essonne (UEVE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), and Maciejak, Olek

Subjects
chemistry.chemical_classification, Specific Catalysis, Aminopropyltrimethoxysilane Templated Polycondensation, Chemical modification, Combinatorial chemistry, Catalysis, Residue (chemistry), chemistry.chemical_compound, Hydrolysis, chemistry, Polymerization, Deoxyadenosine, Nucleic Acids, [CHIM] Chemical Sciences, Nucleic acid, [CHIM]Chemical Sciences, Nucleotide
Abstract

International audience; The polycondensation of a silane derivative such as aminopropyltrimethoxysilane (ATMS) in the presence of nucleic acids has never been investigated. Our group has previously demonstrated that in chloroform ATMS hydrolysis and polycondensation were faster when the reaction were carried out in the presence of double stranded DNA (146 bp). The results showed that the kinetics of ATMS hydrolysis was affected by the base type used, a fast hydrolysis reaction rate being observed with nucleotide molecules containing adenosine group, and that in the absence of water the amino group of deoxyadenosine units, and not the hydroxylic group of the sucrose residue, can react with ATMS methoxy groups. The present work was initiated aiming at providing a better understanding of this effect. It was observed that the polymerization degree of oligodeoxyadenylate has a clear impact on the kinetic of reaction this effect being as much important as the polymerization degree of the oligodeoxyadenylate was high. Structural investigation by molecular modeling showed that this enhanced reactivity can be explained by conformational effects. Altogether, these results are accounted for assuming that DNA can act as a specific template for ATMS polycondensation, in organic medium such as chloroform, opening the way to possible DNA encapsulation, and a new way for DNA chemical modification in organic solvent.

Published
2020
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10. A Frequency-Multiplexed Coherent Electro-optic Memory in Rare Earth Doped Nanoparticles

Author

Alban Ferrier, Alexandre Tallaire, Philippe Goldner, Akio Ikesue, Jenny Karlsson, Diana Serrano, Alexandre Fossati, Shuping Liu, Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC)

Subjects
Materials science, FOS: Physical sciences, Bioengineering, 02 engineering and technology, 7. Clean energy, Multiplexing, Quantum Technologies, NanOQTech, [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph], Broadband, Rare earth, General Materials Science, Quantum information science, Quantum, Quantum computer, Quantum Physics, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], business.industry, Mechanical Engineering, Bandwidth (signal processing), General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Square, 3. Good health, Quantum technology, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Optoelectronics, Nanoparticles, 0210 nano-technology, business, Quantum Physics (quant-ph), Coherence (physics)
Abstract

Quantum memories for light are essential components in quantum technologies like long-distance quantum communication and distributed quantum computing. Recent studies have shown that long optical and spin coherence lifetimes can be observed in rare earth doped nanoparticles, opening exciting possibilities over bulk materials e.g. for enhancing coupling to light and other quantum systems, and material design. Here, we report on coherent light storage in Eu$^{3+}$:Y$_2$O$_3$ nanoparticles using the Stark Echo Modulation Memory (SEMM) quantum protocol. We first measure a nearly constant Stark coefficient of 50 kHz/(V/cm) across a bandwidth of 15 GHz, which is promising for broadband operation. Storage of light using SEMM is then demonstrated for times up to 40 $\mu$s. Pulses with two different frequencies are also stored, confirming frequency-multiplexing capability, and are used to demonstrate the memory high phase fidelity., Comment: 20 pages, 5 figures

Published
2020

11. Defect Engineering for Quantum Grade Rare-Earth Nanocrystals

Author

Shuping Liu, Diana Serrano, Philippe Goldner, Alban Ferrier, Alexandre Tallaire, Alexandre Fossati, Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC)

Subjects
Photon, Materials science, Annealing (metallurgy), Rare earth, Population, Physics::Optics, General Physics and Astronomy, Nanoparticle, Nanotechnology, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Quantum Technologies, Condensed Matter::Materials Science, NanOQTech, General Materials Science, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], education, Quantum, ComputingMilieux_MISCELLANEOUS, Spin-½, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], education.field_of_study, business.industry, General Engineering, Defect engineering, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, Crystallographic defect, 0104 chemical sciences, Quantum technology, Nanocrystal, Optoelectronics, Nanoparticles, Condensed Matter::Strongly Correlated Electrons, 0210 nano-technology, business, Single crystal, Microwave
Abstract

Nanostructured systems that combine optical and spin transitions offer new functionalities for quantum technologies by providing efficient quantum light–matter interfaces. Rare-earth (RE) ion-doped nanoparticles are promising in this field as they show long-lived optical and spin quantum states. However, further development of their use in highly demanding applications, such as scalable single-ion-based quantum processors, requires controlling defects that currently limit coherence lifetimes. In this work, we show that a post-treatment process that includes multistep high-temperature annealing followed by high-power microwave oxygen plasma processing advantageously improves key properties for quantum technologies. We obtain single crystalline Eu3+:Y2O3nanoparticles (NPs) of 100 nm diameter, presenting bulk-like inhomogeneous line widths (Γinh) and population lifetimes (T1). Furthermore, a significant coherence lifetime (T2) extension, up to a factor of 5, is successfully achieved by modifying the oxygen-related point defects in the NPs by the oxygen plasma treatment. These promising results confirm the potential of engineered RE NPs to integrate devices such as cavity-based single-photon sources, quantum memories, and processors. In addition, our strategy could be applied to a large variety of oxides to obtain outstanding crystalline quality NPs for a broad range of applications.

Published
2020

12. Synthesis, Conformational Analysis, and Complexation Study of an Iminosugar-Aza-Crown, a Sweet Chiral Cyclam Analog

Author

Ana Ardá, Jesús Jiménez-Barbero, Yves Blériot, Alexandra Bordes, Thibault Troadec, Matthieu Sollogoub, Antonio Franconetti, Mickaël Ménand, Flavie Perrin, Ana Poveda, Raphaël Tripier, Jérôme Désiré, Jérôme Guillard, Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Cell Biology and Stem Cells Unit (CICbioGUNE), Technologic Park of Bizkaia, Chimie, Electrochimie Moléculaires et Chimie Analytique (CEMCA), Université de Brest (UBO)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO), Institut Parisien de Chimie Moléculaire (IPCM), Chimie Moléculaire de Paris Centre (FR 2769), Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Basque Foundation for Science (Ikerbasque), and University of the Basque Country [Bizkaia] (UPV/EHU)

Subjects
Letter, [CHIM.ORGA]Chemical Sciences/Organic chemistry, 010405 organic chemistry, Organic Chemistry, Carbohydrates, Iminosugar, 010402 general chemistry, 01 natural sciences, Biochemistry, Combinatorial chemistry, Redox, 0104 chemical sciences, Glycan, Molecular Recognition, NMR , interactions, chemistry.chemical_compound, chemistry, Cations, Cyclam, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Chelation, Conformation, Redox reactions, Physical and Theoretical Chemistry, Macrocycles
Abstract

A new family of chiral C2 symmetric tetraazamacrocycles, coined ISAC for IminoSugar Aza-Crown, incorporating two iminosugars adopting a 4C1 conformation is disclosed. Multinuclear NMR experiments on the corresponding Cd2+ complex show that the ISAC is a strong chelator in water and its tetramine cavity adopts a conformation similar to that of the parent Cd−cyclam complex. Similar behavior is observed with Cu2+ in solution, with enhanced stability compared to the Cu−cyclam complex.

Published
2020

13. One Ion, Many Facets: Efficient, Structurally and Thermally Sensitive Luminescence of Eu2+ in Binary and Ternary Strontium Borohydride Chlorides

Author

Wylezich, Thomas, Sontakke, Atul D., Castaing, Victor, Suta, Markus, Viana, Bruno, Meijerink, Andries, Kunkel, Nathalie, Sub Condensed Matter and Interfaces, Condensed Matter and Interfaces, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Utrecht University [Utrecht], Institut de Recherche de Chimie Paris (IRCP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ministère de la Culture (MC), Sub Condensed Matter and Interfaces, and Condensed Matter and Interfaces

Subjects
Solid-state chemistry, Materials science, Photoluminescence, Chemistry(all), General Chemical Engineering, Inorganic chemistry, chemistry.chemical_element, hydride, temperature sensor, Phosphor, 02 engineering and technology, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, divalent europium, 010402 general chemistry, Borohydride, 7. Clean energy, 01 natural sciences, chemistry.chemical_compound, borohydride, structure-property relationship, Materials Chemistry, Strontium, Doping, mechanochemical synthesis, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, 021001 nanoscience & nanotechnology, Alkali metal, 0104 chemical sciences, chemistry, Chemical Engineering(all), 0210 nano-technology, Luminescence
Abstract

The Eu2+-doped mixed alkaline metal strontium borohydride chlorides ASr(BH4)3–xClx (A = K, Rb, Cs) and Eu2+-doped strontium borohydride chloride Sr(BH4)2–xClx have been prepared by mechanochemical synthesis. Intense blue photoluminescence for Sr(BH4)2–xClx (λem= 457 nm) and cyan photoluminescence for the perovskite-type mixed alkaline metal strontium borohydride chlorides ASr(BH4)3–xClx (A = K, Rb, Cs) (λem = 490 nm) is already observable after short milling times. Temperature dependent luminescence measurements reveal an appreciable blue shift with increasing temperature for all ASr(BH4)3–xClx (A = K, Rb, Cs) until 500 K. This extremely large shift, caused by structural relaxation, as well as the vibrationally induced emission band broadening can serve as a sensitive response signal for temperature sensing, and this unique behavior has, to the best of our knowledge, not been reported in any Eu2+ doped phosphor so far. Additionally, bright luminescence, high quantum efficiencies, and very low thermal quenching of these Eu2+-doped borohydrides show that such host materials could serve in solid state lighting applications., This project has received funding from the European Union's Horizon 2020 FET Open programme under grant agreement No 801305 (NanoTBTech).

Published
2019

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