Roxanne Berthin

ORCID: 0000-0002-9481-2266
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About
Contact & Profiles
Research Areas
  • Electrocatalysts for Energy Conversion
  • Ionic liquids properties and applications
  • Electrochemical Analysis and Applications
  • Fuel Cells and Related Materials
  • CO2 Reduction Techniques and Catalysts
  • Molecular Junctions and Nanostructures
  • Supercapacitor Materials and Fabrication
  • Advanced battery technologies research
  • Photochemistry and Electron Transfer Studies
  • Electrochemical sensors and biosensors
  • Free Radicals and Antioxidants
  • Micro and Nano Robotics
  • Photochromic and Fluorescence Chemistry
  • Photoreceptor and optogenetics research
  • Algal biology and biofuel production
  • Pickering emulsions and particle stabilization
  • nanoparticles nucleation surface interactions
  • Conducting polymers and applications
  • Engineering and Materials Science Studies
  • Advanced Thermodynamics and Statistical Mechanics
  • Organic Chemistry Cycloaddition Reactions
  • Supramolecular Self-Assembly in Materials

Sorbonne Université
2020-2025

PHENIX laboratory
2020-2025

Centre National de la Recherche Scientifique
2020-2022

Réseau sur le Stockage Electrochimique de l'énergie
2020-2022

Sorbonne University Abu Dhabi
2021-2022

Université de Picardie Jules Verne
2020

Délégation Ile-de-France Villejuif
2020

Chimie ParisTech
2020

Université Paris Sciences et Lettres
2020

Marin-Laflèche et al., (2020). MetalWalls: A classical molecular dynamics software dedicated to the simulation of electrochemical systems. Journal Open Source Software, 5(53), 2373, https://doi.org/10.21105/joss.02373

10.21105/joss.02373 article EN cc-by The Journal of Open Source Software 2020-09-25

Electrochemistry is central to many applications, ranging from biology energy science. Studies now involve a wide range of techniques, both experimental and theoretical. Modeling simulations methods, such as density functional theory or molecular dynamics, provide key information on the structural dynamic properties systems. Of particular importance are polarization effects electrode/electrolyte interface, which difficult simulate accurately. Here, we show how these electrostatic...

10.1063/5.0101777 article EN The Journal of Chemical Physics 2022-09-08

Biomolecular condensates play a central role in the spatial organization of living matter. Their formation is now well understood as form liquid-liquid phase separation that occurs very far from equilibrium. For instance, they can be modeled active droplets, where combination molecular interactions and chemical reactions result microphase separation. However, so far, models chemically droplets are spatially continuous deterministic. Therefore, relationship between microscopic parameters some...

10.1103/physreve.111.l023403 article EN Physical review. E 2025-02-24

Applied electrochemistry plays a key role in many technologies, such as Li-ion batteries, fuel cells, supercapacitors, solar etc. It is therefore at the core of research programs all over world. However, fundamental electrochemical investigations remain scarce. In particular, among fields for which gap between theory and experiment largest. From computational point view, there no classical molecular dynamics (MD) software devoted to simulation systems while other biochemistry or material...

10.26434/chemrxiv.12389777.v1 preprint EN cc-by-nc-nd 2020-06-02

Redox-active molecules are of interest in many fields, such as medicine, catalysis, or energy storage. In particular, supercapacitor applications, they can be grafted to ionic liquids form so-called biredox liquids. To completely understand the structural and transport properties systems, an insight at molecular scale is often required, but few force fields developed ad hoc for these molecules. Moreover, do not include polarization effects, which lead inaccurate solvation dynamical...

10.1063/5.0061891 article EN The Journal of Chemical Physics 2021-08-18

A dithienylethene (DTE) photochromic compound functionalized by ureidopyrimidinone (UPy) quadruple hydrogen bonding blocks was synthesized Takeshita and coworkers [Takeshita et al., Chem. Commun., 2005, 761] in order to form a light-responsive supramolecular self-assembling system. In solution, the formation of assemblies only observed for one DTE isomer, namely closed-form isomer. To rationalize this experimental finding, with help Molecular Dynamics (MD) (time-dependent) DFT calculations,...

10.1039/c9cp06590c article EN Physical Chemistry Chemical Physics 2020-01-01

<p>The growing hydrogen-economy requires accelerating the hydrogen evolution reaction. The water dissociation step (Volmer step) has been proposed as a main kinetic limitation, but mechanisms at play in electrochemical double-layer are poorly understood. This is due to ambivalent role of water: it acts both reactant and solvent. Here we propose confine inside an organic liquid matrix order isolate sole reactant. We observe formation aqueous-rich nanodomains, which size can be tuned by...

10.26434/chemrxiv.11926293 preprint EN cc-by-nc-nd 2020-03-05

Ionic liquids generally display peculiar structural features that impact their physical properties, such as the formation of polar and apolar domains. Recently, ionic functionalized with anthraquinone TEMPO redox groups were shown to increase energy storage performance supercapacitors, but structure has not yet been characterized. In this work, we use polarizable molecular dynamics study nanostructuration biredox liquids. We show nitroxyl functions tend aggregate, while favor stacked...

10.1021/acs.jpclett.2c03330 article EN The Journal of Physical Chemistry Letters 2022-12-27

Biomolecular condensates play a central role in the spatial organization of living matter. Their formation is now well understood as form liquid-liquid phase separation that occurs very far from equilibrium. For instance, they can be modeled active droplets, where combination molecular interactions and chemical reactions result microphase separation. However, so far, models chemically droplets are spatially continuous deterministic. Therefore, relationship between microscopic parameters some...

10.48550/arxiv.2406.14256 preprint EN other-oa arXiv (Cornell University) 2024-06-20

The growing hydrogen-economy requires accelerating the hydrogen evolution reaction. water dissociation step (Volmer step) has been proposed as a main kinetic limitation, but mechanisms at play in electrochemical double-layer are poorly understood. This is due to ambivalent role of water: it acts both reactant and solvent. Here we propose confine inside an organic liquid matrix order isolate sole reactant. We observe formation aqueous-rich nanodomains, which size can be tuned by changing...

10.26434/chemrxiv.11926293.v2 preprint EN cc-by-nc-nd 2020-06-01

Redox active molecules are of interest in many fields such as medicine, catalysis or energy storage. In particular, supercapacitor applications, they can be grafted to ionic liquids form so-called biredox liquids. To completely understand the structural and transport properties systems, an insight at molecular scale is often required but few force developed ad hoc for these molecules. Moreover, do not include polarization effects, which lead inaccurate solvation dynamical properties. this...

10.26434/chemrxiv-2021-w18g2 preprint EN cc-by-nc-nd 2021-06-29

The growing hydrogen-economy requires accelerating the hydrogen evolution reaction. water dissociation step (Volmer step) has been proposed as a main kinetic limitation, but mechanisms at play in electrochemical double-layer are poorly understood. This is due to ambivalent role of water: it acts both reactant and solvent. Here we propose confine inside an organic liquid matrix order isolate sole reactant. We observe formation aqueous-rich nanodomains, which size can be tuned by changing...

10.26434/chemrxiv.11926293.v1 preprint EN cc-by-nc-nd 2020-03-05

Applied electrochemistry plays a key role in many technologies, such as Li-ion batteries, fuel cells, supercapacitors, solar etc. It is therefore at the core of research programs all over world. However, fundamental electrochemical investigations remain scarce. In particular, among fields for which gap between theory and experiment largest. From computational point view, there no classical molecular dynamics (MD) software devoted to simulation systems while other biochemistry or material...

10.26434/chemrxiv.12389777 preprint EN cc-by-nc-nd 2020-06-02

Electrochemistry is central to many applications, ranging from biology energy science. Studies now involve a wide range of techniques, both experimental and theoretical. Modelling simulations methods, such as density functional theory or molecular dynamics, provide key information on the structural dynamic properties systems. Of particular importance are polarization effects electrode/electrolyte interface, which difficult simulate accurately. Here we show how these electrostatic...

10.26434/chemrxiv-2022-hx4c7 preprint EN cc-by-nc-nd 2022-06-07

Quinones are redox active organic molecules that have been proposed as an alternative choice to metal-based materials in electrochemical energy storage devices. Functionalization allows fine tune not only their chemical stability but also the potential and kinetics of electron transfer reaction. However, reaction rate constant is solely determined by species impacted solvent effects. In this work, we show how functionalization benzoquinone with different functional groups impacts...

10.26434/chemrxiv-2022-36db2 preprint EN cc-by-nc-nd 2022-06-13

Quinones are redox active organic molecules that have been proposed as an alternative choice to metal-based materials in electrochemical energy storage devices. Functionalization allows one fine tune not only their chemical stability but also the potential and kinetics of electron transfer reaction. However, reaction rate constant is determined by species impacted solvent effects. In this work, we show how functionalization benzoquinone with different functional groups impacts reorganization...

10.1063/5.0102238 article EN The Journal of Chemical Physics 2022-07-21

Ionic liquids generally display peculiar structural features that impact their physical properties, such as the formation of polar and apolar domains. Recently, ionic functionalized with anthraquinone TEMPO redox groups were shown to increase energy storage performance supercapacitors, but structure was not characterized so far. In this work we use polarizable molecular dynamics study nanostructuration biredox liquids. We show nitroxyl functions tend aggregate, while favor stacked...

10.26434/chemrxiv-2022-pgjgv preprint EN cc-by-nc-nd 2022-11-03

Redox active molecules are of interest in many fields such as medicine, catalysis or energy storage. In particular, supercapacitor applications, they can be grafted to ionic liquids form so-called biredox liquids. To completely understand the structural and transport properties systems, an insight at molecular scale is often required but few force developed ad hoc for these molecules. Moreover, do not include polarization effects, which lead inaccurate solvation dynamical properties. this...

10.33774/chemrxiv-2021-w18g2 preprint EN cc-by-nc-nd 2021-06-29
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