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Your search keyword '"Claire Tonnelé"' showing total 4 results
Start Over Author "Claire Tonnelé" Publisher royal society of chemistry (rsc)
4 results on '"Claire Tonnelé"'

1. Electric-field induced second harmonic generation responses of push–pull polyenic dyes: experimental and theoretical characterizations

Author

Carmelo Naim, Raphaël Vangheluwe, Isabelle Ledoux-Rak, Benoît Champagne, Claire Tonnelé, Mireille Blanchard-Desce, Eduard Matito, and Frédéric Castet

Subjects
General Physics and Astronomy, Physical and Theoretical Chemistry
Abstract

The second-order nonlinear optical properties of four series of amphiphilic cationic chromophores have been investigated by means of electric field induced second harmonic generation and by combining molecular dynamics and quantum chemical calculations.

Published
2023

2. Vibronic effect and influence of aggregation on the photophysics of graphene quantum dots

Author

Thomas Liu, Claire Tonnelé, Shen Zhao, Loïc Rondin, Christine Elias, Daniel Medina-Lopez, Hanako Okuno, Akimitsu Narita, Yannick Chassagneux, Christophe Voisin, Stéphane Campidelli, David Beljonne, Jean-Sébastien Lauret, Laboratoire Lumière, Matière et Interfaces (LuMIn), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay), Nano Optique et Spectroscopy (NOOS), CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay), University of Mons [Belgium] (UMONS), Laboratoire Innovation en Chimie des Surfaces et NanoSciences (LICSEN UMR 3685), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) (NIMBE UMR 3685), Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Rayonnement Matière de Saclay (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Max Planck Institute for Polymer Research, Max-Planck-Gesellschaft, 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), Université de Mons (UMons), and ANR-19-CE09-0031,GRANAO,Boites quantiques et Nanorubans de Graphene pour l'optique(2019)

Subjects
[PHYS]Physics [physics], Physics::Atomic and Molecular Clusters, [CHIM]Chemical Sciences, Physics::Optics, General Materials Science
Abstract

International audience; Graphene quantum dots, atomically precise nanopieces of graphene, are promising nanoobjects with potential applications in various domains such as photovoltaics, quantum light emitters or bio-imaging. Despite their interesting prospects, precise reports on their photophysical properties remain scarce. Here, we report on a study of the photophysics of C$_{96}$H$_{24}$(C$_{12}$H$_{25}$) graphene quantum dots. A combination of optical studies down to the single molecule level with advanced molecular modeling demonstrates the importance of the coupling to vibrations in the emission process. Optical fingerprints for H-like aggregates are identified. Our combined experimental-theoretical investigations provide a comprehensive description of the light absorption and emission properties of nanographenes, which not only represents an essentiel step towards precise control of sample production, but also paves the way for new exciting physics focused on twisted graphenoid.

Published
2022

3. Second-order nonlinear optical properties of Stenhouse photoswitches: insights from density functional theory

Author

Luca Muccioli, Claire Tonnelé, Benoît Champagne, Frédéric Castet, Tonnelé, Claire, Champagne, Benoît, Muccioli, Luca, and Castet, Frédéric

Subjects
High contrast, Materials science, General Physics and Astronomy, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Physics and Astronomy (all), Nonlinear optical, Order (biology), Chemical physics, Frequency dispersion, Density functional theory, Physical and Theoretical Chemistry, 0210 nano-technology, Visible spectrum
Abstract

We report the first investigation of the second-order nonlinear optical (NLO) properties of donor-acceptor Stenhouse adducts (DASAs), an emerging class of colored photochromes that undergo photoswitching with visible light to a colorless form. By using time-dependent density functional theory, we provide insights into the relationships linking the nature of the chemical substituents to the amplitude and contrasts of the NLO response. Solvent and frequency dispersion effects are also analyzed. The calculations predict that DASAs behave as high contrast NLO switches, a finding that extends their potential applications to photo-responsive NLO materials and devices.

Published
2018

4. Synthesis of stable free base secochlorins and their corresponding metal complexes from meso-tetraarylporphyrin derivatives

Author

David Beljonne, Sébastien Richeter, Nathalie Marcotte, Jean-François Lefebvre, Roberto Lazzaroni, Claire Tonnelé, Mamadou Lo, Sébastien Clément, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Laboratory for Chemistry of Novel Materials, and Université de Mons (UMons)

Subjects
[CHIM.ORGA]Chemical Sciences/Organic chemistry, 010405 organic chemistry, Chemistry, Metals and Alloys, Free base, General Chemistry, 010402 general chemistry, Cleavage (embryo), 01 natural sciences, Combinatorial chemistry, Catalysis, 3. Good health, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Metal, chemistry.chemical_compound, visual_art, Materials Chemistry, Ceramics and Composites, visual_art.visual_art_medium, Imidazole, Organic chemistry
Abstract

International audience; Cleavage reactions of 2,3-diamino-meso-tetraarylporphyrins and meso-tetraarylporphyrins fused to imidazole rings afforded secochlorins including stable free base derivatives.

Published
2012

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