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12 results on '"Myriam Roy"'

1. Persulfurated Benzene‐Cored Asterisks with π‐Extended ThioNaphthyl Arms: Synthesis, Structural, Photophysical and Covalent Dynamic Properties

Author

Sapna Gahlot, Alessandro Gradone, Myriam Roy, Michel Giorgi, Simone Conti, Paola Ceroni, Marco Villa, Marc Gingras, Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Department of Chemistry 'Giacomo Ciamician', University of Bologna/Università di Bologna, 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), Fédération des Sciences Chimiques de Marseille (FRSCM), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), ANR-20-CE07-0031,SulfurDance,'La Danse du Soufre' : Polythioarenes en tant que Plateformes en Chimie Covalente Dynamique(2020), Gahlot, Sapna, Gradone, Alessandro, Roy, Myriam, Giorgi, Michel, Conti, Simone, Ceroni, Paola, Villa, Marco, and Gingras, Marc

Subjects
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, materials science, [CHIM.ORGA]Chemical Sciences/Organic chemistry, sulfur, Organic Chemistry, photophysic, arene, General Chemistry, aromatic substitution, Catalysis, supramolecular chemistry
Abstract

The synthesis of regioisomeric asterisks (5) and (6) incorporating a benzene core with six 1-naphthylthio or six 2-naphthylthio arms are reported in search for new materials with optoelectronic properties. The consequences on the extension of a pi system surrounding a persulfurated benzene core provide a new avenue to study the structural, photophysical, and chemical properties of such family of all-organic phosphors. It also diverts the persulfuration mechanism after two radical cyclizations for making a [5]dithiohelicene by-product (7) and favors dynamic sulfur component exchange reactions surrounding the core. These exchanges convert asterisks (5) and (6), non-phosphorescent at 20 degrees C to the highly phosphorescent (4) (phi similar to 100 %, solid state at 20 degrees C). For asterisks (5) and (6), the absence of the typical phosphorescence of the per(phenylthio)benzene core in the solid state at 20 degrees C and the presence of a weak naphthalene-based phosphorescence at 77 K is attributed to an energy transfer from the triplet state of the persulfurated benzene core to the outer naphthalene moieties, resulting in an antenna system.

Published
2022
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2. Unbalanced 2D Chiral Crystallization of Pentahelicene Propellers and Their Planarization into Nanographenes

Author

Jan Voigt, Marc Gingras, Karl-Heinz Ernst, Yoann Coquerel, Milos Baljozovic, Myriam Roy, Christian Wäckerlin, Empa, Swiss Fed Labs Mat Testing & Res, Dubendorf, Switzerland, Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires de Marseille (ISM2), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Nanosurf laboratory, institute of Physics, Department of Chemistry University of Zurich, Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), University of Zurich, and Ernst, Karl‐Heinz

Subjects
10120 Department of Chemistry, animal structures, 1503 Catalysis, UFSP13-6 Solar Light to Chemical Energy Conversion, polycyclic aromatic hydrocarbons, Hot Paper, 010402 general chemistry, 01 natural sciences, Catalysis, law.invention, helicenes, law, Chemical-mechanical planarization, 540 Chemistry, Crystallization, Quantum tunnelling, 010405 organic chemistry, Graphene, Chemistry, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Communication, Organic Chemistry, Intermolecular force, graphene, technology, industry, and agriculture, General Chemistry, Communications, 0104 chemical sciences, Secondary ion mass spectrometry, Chemical physics, scanning tunneling microscopy, on-surface chemistry, Scanning tunneling microscope, Enantiomer, 1605 Organic Chemistry
Abstract

The chiral self‐assembly of trispentahelicene propellers on a gold surface has been investigated in ultrahigh vacuum by means of scanning tunneling microscopy and time‐of‐flight secondary ion mass spectrometry. The trispentahelicene propellers aggregate into mirror domains with an enantiomeric ratio of 2 : 1. Thermally induced cyclodehydrogenation leads to planarization into nanographenes, which self‐assemble into closed‐packed layers with two different azimuths. Further treatment induces in part dimerization and trimerization by intermolecular cyclodehydrogenation., From helical to planar: Molecular propellers built up by three pentahelicene subunits self‐assemble on a gold surface into enantiomerically unbalanced two‐dimensional crystal domains. Upon thermal treatment of the close‐packed monolayer, intramolecular cyclodehydrogenation into planar nanographenes occurs. Further thermal treatment leads in part to fusion into larger graphene flakes of up to four nanographene units by intermolecular cyclodehydrogenation.

Published
2021
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3. Stereoselective Syntheses, Structures and Properties of Extremely Distorted Chiral Nanographenes Embedding Hextuple Helicenes

Author

Valérie Monnier, Myriam Roy, Salomé Poyer, Denis Hagebaum-Reignier, Veronika Berezhnaia, Marco Villa, Marc Gingras, Jean Rodriguez, Yannick Carissan, Nicolas Vanthuyne, Laurence Charles, Yoann Coquerel, Michel Giorgi, Jean-Valère Naubron, Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), 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), Institut des Sciences Moléculaires de Marseille (ISM2), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Fédération Sciences Chimiques Marseille (FSCM), Institut de Chimie Radicalaire (ICR), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-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)-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), and 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)

Subjects
Steric effects, Materials science, 010405 organic chemistry, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Supramolecular chemistry, Triphenylene, Aromaticity, General Chemistry, General Medicine, Dihedral angle, Ring (chemistry), 010402 general chemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, helicenes, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, chemistry.chemical_compound, Crystallography, Enantiopure drug, chemistry, Helicene
Abstract

International audience; We report a molecular design and concept using p-system elongation and steric effects from helicenes surrounding a triphenylene core toward stable chiral polycyclic aromatic hydrocarbons (PAHs) with a maximal p-distortion to tackle their aromaticity, supramolecular and molecular properties. The selective syntheses, and the structural, conformational and chiroptical properties of two diastereomeric large multi-helicenes of formula C90H48 having a triphenylene core and embedding three [5]helicene units on their inner edges and three [7]helicene units at their periphery are reported based on diastereoselective and, when applicable, enantiospecific (!) Yamamoto-type cyclotrimerizations of racemic or enantiopure 9,10-dibromo[7]helicene. Both molecules have an extremely distorted triphenylene core, and one of them exhibits the largest torsion angle recorded so far for a benzene ring (twist = 36.9º). The analysis of aromaticity distribution in these model molecules using magnetic criteria revealed a non-aromatic character of their triphenylene cores and provides a new look at aromaticity in threedimensional PAHs. One diastereomer can complex up to three silver(I) ions in the bay region (cavities) of its peripheral [7]helicene units, opening the door to chiral cationic metal-nanographene hybrids.

Published
2020
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4. Pentasulfurated benzene-cored asterisks: relationship between crystal structure and luminescence properties

Author

Paola Ceroni, Marco Villa, Jose Busto, Raymond Noel, Myriam Roy, Marc Gingras, Simone d'Agostino, Piera Sabatino, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Villa, Marco, D'agostino, Simone, Sabatino, Piera, Noel, Raymond , Busto, Josè , Roy, Myriam , Gingras, Marc, Ceroni, Paola

Subjects
[PHYS]Physics [physics], aggregation induced emission (AIE), optical properties, crystal structure, room temperature phosphorescence (RTP), intermolecular interactions, Chemistry, Intermolecular force, 02 engineering and technology, General Chemistry, Crystal structure, Chromophore, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Catalysis, 3. Good health, 0104 chemical sciences, Crystallography, chemistry.chemical_compound, Excited state, Materials Chemistry, Molecule, 0210 nano-technology, Phosphorescence, Luminescence, Benzene
Abstract

Room temperature phosphorescence by metal-free chromophores is quite a rare phenomenon. Hexasulfurated benzene-cored molecules with phenyl substituents, hereafter named asterisks, display bright green phosphorescence in the solid state at room temperature, while they are not luminescent in solution, because of fast non-radiative decay of the lowest excited state. Some of these asterisks are also among the most phosphorescent compounds. Following a search for structure-property relationships, we report here the synthesis, characterization, crystal structure and optical properties of three pentasulfurated benzene-cored asterisks, carrying at the sixth position of the benzene core a cyano (A5CN), a carboxaldehyde (A5CHO), or a vinyl group (A5CC). The most luminescent compound is A5CN displaying an intense orange phosphorescence in the solid state: our actual aim is to try and correlate the optical properties together with the crystal structure in this series of compounds.

Published
2020
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5. Front Cover: Delaying Anticancer Drug Delivery by Self‐Assembly and Branching Effects of Minimalist Dendron–Drug Conjugates (Chem. Eur. J. 41/2019)

Author

Marc Gingras, Vincent Terrasson, Diane Braguer, Marie-Anne Esteve, Florian Correard, Myriam Roy, Institut de neurophysiopathologie (INP), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Assistance Publique - Hôpitaux de Marseille (APHM), Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), ESCOM - Ecole Supérieure de Chimie Organique et Minérale (ESCOM), Transformation Intégrée de la Matière Renouvelable (TIMR), Université de Technologie de Compiègne (UTC)-Université de Technologie de Compiègne (UTC), Service Pharmacie [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), and Assistance Publique-Hôpitaux de Marseille (AP-HM)

Subjects
Drug, Chemistry, media_common.quotation_subject, Organic Chemistry, [SDV.CAN]Life Sciences [q-bio]/Cancer, General Chemistry, Branching (polymer chemistry), Combinatorial chemistry, Catalysis, 3. Good health, chemistry.chemical_compound, Paclitaxel, Dendrimer, Drug delivery, Nanomedicine, [CHIM]Chemical Sciences, Self-assembly, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Conjugate, media_common
Abstract

International audience

Published
2019
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6. Delaying Anticancer Drug Delivery by Self-Assembly and Branching Effects of Minimalist Dendron-Drug Conjugates

Author

Vincent Terrasson, Florian Correard, Diane Braguer, Myriam Roy, Marc Gingras, Marie-Anne Esteve, Institut de neurophysiopathologie (INP), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Assistance Publique-Hôpitaux de Marseille (AP-HM), Institut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Service Pharmacie [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE), Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), and Assistance Publique - Hôpitaux de Marseille (APHM)

Subjects
Drug, Dendrimers, Lung Neoplasms, Paclitaxel, Cell Survival, media_common.quotation_subject, [SDV.CAN]Life Sciences [q-bio]/Cancer, 010402 general chemistry, Branching (polymer chemistry), 01 natural sciences, Catalysis, Polyethylene Glycols, 3D cell culture, chemistry.chemical_compound, Dendrimer, Humans, [CHIM]Chemical Sciences, ComputingMilieux_MISCELLANEOUS, media_common, 010405 organic chemistry, Chemistry, Organic Chemistry, General Chemistry, Antineoplastic Agents, Phytogenic, Anticancer drug, Combinatorial chemistry, 0104 chemical sciences, A549 Cells, Delayed-Action Preparations, Drug delivery, Cancer cell, Biophysics, Nanomedicine, Self-assembly, Intracellular, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Conjugate
Abstract

Self-assembly of a covalently-bound lipophilic drug to a dendronic scaffold for making organic nanoparticles is reported as a proof of concept in nanovectorization. A minimalist structural approach with a small PEG-dendron conjugated to paclitaxel (PTX), incorporating safe succinic and gallic acids, is efficient to provide the expected anticancer bioactivity, but also significantly retards and targets intracellular delivery of PTX in 2D and 3D lung cancer cell cultures. A branching effect of dendrons is crucial, when compared to linear PTX conjugates. Transmission electron microscopy (TEM) and dynamic light-scattering (DLS) studies indicate the formation of stable, low-disperse nanoparticles at 10-5 m in H2 0, which could also be responsible for the biological effects. An ultrasensitive LC-MS/MS method was used for the determination of intracellular PTX concentration over time, along with the survival rates of cancer cells. Similarly, cell survival assays were successfully correlated to a 3D cell culture with spheroids for mimicking tumors, when treated with PTX conjugates. Our work opens the way to a full evaluation program required for new chemical entities.

Published
2018
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7. Chiral Nanographene Propeller Embedding Six Enantiomerically Stable [5]Helicene Units

Author

Veronika Berezhnaia, Jean Rodriguez, Jean-Valère Naubron, Nicolas Vanthuyne, Myriam Roy, Marco Villa, Yoann Coquerel, Marc Gingras, Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires de Marseille (ISM2), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC), Spectropôle - Aix Marseille Université (AMU SPEC), and Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
nanographene, 010405 organic chemistry, Stereochemistry, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Propeller, chemistry.chemical_element, General Chemistry, 010402 general chemistry, 01 natural sciences, Biochemistry, Catalysis, 0104 chemical sciences, Nickel, chemistry.chemical_compound, Polyaromatic hydrocarbon, Colloid and Surface Chemistry, chemistry, Helicene, Embedding, Molecule, helicene
Abstract

International audience; A one-step synthesis of a nanographene propeller with a D 3-symmetry was obtained starting from 7,8-dibromo[5]helicene by Yamamoto nickel(0) couplings. It afforded a chiral polyaromatic hydrocarbon (PAH) embedding six enantiomerically stable [5]helicene units. This dense accumulation of helical strain resulted in a distorted geometry, but stable stereochemistry. The conformational, structural, chiroptical, and photophysical properties of the molecule are reported.

Published
2017
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8. Turn-on Phosphorescence by Metal Coordination to a Multivalent Terpyridine Ligand: A New Paradigm for Luminescent Sensors

Author

Andrea Fermi, Paola Ceroni, Giacomo Bergamini, Marc Gingras, Myriam Roy, Centre Interdisciplinaire de Nanoscience de Marseille (CINaM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Cinam, Hal, Andrea Fermi, Giacomo Bergamini, Myriam Roy, Marc Gingra, and Paola Ceroni

Subjects
010402 general chemistry, Photochemistry, 01 natural sciences, Biochemistry, metal ion, Catalysis, AIE, chemistry.chemical_compound, Light-harvesting antenna, Colloid and Surface Chemistry, ions sensors, Molecule, chemistry.chemical_classification, fluoride, 010405 organic chemistry, Chemistry, Ligand, General Chemistry, Chromophore, 0104 chemical sciences, Supramolecular polymers, phosphorescence, Intramolecular force, Terpyridine, Luminescence, Phosphorescence
Abstract

A hexathiobenzene molecule carrying six terpyridine (tpy) units at the periphery has been designed to couple the aggregation induced phosphorescence, displayed by the core in the solid state, to the metal binding properties of the tpy units. Upon Mg(2+) complexation in THF solution, phosphorescence of the hexathiobenzene core is turned on. Metal ion coordination yields the formation of a supramolecular polymer which hinders intramolecular rotations and motions of the core chromophore, thus favoring radiative deactivation of the luminescent excited state. Upon excitation of the [Mg(tpy)2](2+) units of the polymeric structure, sensitization of the core phosphorescence takes place with90% efficiency. The light-harvesting polymeric antenna can be disassembled upon fluoride ion addition, thereby switching off luminescence and offering a new tool for fluoride ion sensing. This unique system can, thus, serve as cation or anion sensor.

Published
2014
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9. Synthesis, characterization, and metal ion coordination of a multichromophoric highly luminescent polysulfurated pyrene

Author

Myriam Roy, Paola Ceroni, Marc Gingras, Giacomo Bergamini, Andrea Fermi, Andrea Fermi, Paola Ceroni, Myriam Roy, Marc Gingra, and Giacomo Bergamini

Subjects
Chemistry, Organic Chemistry, Supramolecular chemistry, UV-VISIBLE SPECTROSCOPY, Antenna effect, General Chemistry, Chromophore, Photochemistry, 7. Clean energy, Catalysis, chemistry.chemical_compound, Antenna Effect, Intramolecular force, Pyrene, Terpyridine, ENERGY TRANSFER, Luminescence, Nanoscopic scale, SUPRAMOLECULAR CHEMISTRY
Abstract

We have designed a new multichromophoric system based on a tetra(phenylthio)pyrene core appended with four terpyridine units. The system behaves as a molecular antenna that collects light with the peripheral units and funnels the energy to the very highly luminescent core. The addition of metals ions to the investigated system can not only switch the direction of the intramolecular energy transfer, but also control the formation of three-dimensional nanoscopic objects in a dual function.

Published
2014

10. Measurement of Long-Range Interatomic Distances by Solid-State Tritium-NMR Spectroscopy

Author

Bruno Robert, Francine Brunet, Myriam Roy, Sylvie Rimsky, Dimitrios Sakellariou, Patrick Berthault, Thibault Charpentier, Bernard Rousseau, Florence Pillon, Olivier Lafon, Alexander K. L. Yuen, Jean-Christophe Cintrat, Institut de Chimie Moléculaire et des Matériaux d'Orsay ( ICMMO ), Université Paris-Sud - Paris 11 ( UP11 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) ( LSDRM ), Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M) ( NIMBE UMR 3685 ), 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-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, Laboratoire Bioénergétique, Métalloprotéines et Stress ( LBMS ), Département Biochimie, Biophysique et Biologie Structurale ( B3S ), Institut de Biologie Intégrative de la Cellule ( I2BC ), Université Paris-Sud - Paris 11 ( UP11 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ) -Institut de Biologie Intégrative de la Cellule ( I2BC ), Université Paris-Sud - Paris 11 ( UP11 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Sud - Paris 11 ( UP11 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de Biologie et de Pharmacologie Appliquée ( LBPA ), École normale supérieure - Cachan ( ENS Cachan ) -Centre National de la Recherche Scientifique ( CNRS ), Service de Chimie Bio-Organique et de Marquage ( SCBM ), Département Médicaments et Technologies pour la Santé ( DMTS ), Direction de Recherche Fondamentale (CEA) ( DRF (CEA) ), 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-Direction de Recherche Fondamentale (CEA) ( DRF (CEA) ), ANR : MASTRIT,MASTRIT, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Structure et Dynamique par Résonance Magnétique (LCF) (LSDRM), 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), Laboratoire Bioénergétique Membranaire et Stress (LBMS), Département Biochimie, Biophysique et Biologie Structurale (B3S), Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Biologie et de Pharmacologie Appliquée (LBPA), École normale supérieure - Cachan (ENS Cachan)-Centre National de la Recherche Scientifique (CNRS), Service de Chimie Bio-Organique et de Marquage (SCBM), Médicaments et Technologies pour la Santé (MTS), Université Paris-Saclay-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Paris-Saclay-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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), ANR-05-BLAN-0203,MASTRIT,Long range distance measurement by solid state tritium NMR. Observing the structure and dynamics of biological complex systems at work(2005), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), 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-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Institut Rayonnement Matière de Saclay (IRAMIS), and 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-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
Magnetic Resonance Spectroscopy, 010405 organic chemistry, Carbon-13 NMR satellite, Chemistry, Gyromagnetic ratio, Analytical chemistry, Resonance, General Chemistry, Nuclear magnetic resonance spectroscopy, Carbon-13 NMR, 010402 general chemistry, Tritium, 01 natural sciences, Biochemistry, Catalysis, NMR, 0104 chemical sciences, Amorphous solid, Colloid and Surface Chemistry, Chemical physics, [ CHIM.OTHE ] Chemical Sciences/Other, Molecule, Transverse relaxation-optimized spectroscopy, [CHIM.OTHE]Chemical Sciences/Other, ComputingMilieux_MISCELLANEOUS
Abstract

For the structural determination of a ligand bound to an amorphous macromolecular system, solid-state NMR can be used to provide interatomic distances. It is shown here that selective labeling in discrete locations with tritium enables accurate measurement of long-range distances owing to the high gyromagnetic ratio of this nucleus, without structural modification of the molecule. This approach gives access to the largest NMR distance ever measured between two nuclei (14.4 A). (3)H MAS NMR appears to be a promising tool for structural applications in the biological and material sciences.

Published
2010

11. Cover Picture: Photochemical Transformations Accelerated in Continuous-Flow Reactors: Basic Concepts and Applications / Low-LUMO Pyrene-Fused Azaacenes / Synthesis, Characterization, and Metal Ion Coordination of a Multichromophoric Highly Luminescent Pol

Author

Alejandro Gaita-Ariño, Timothy Noël, Andrea Fermi, Valter Maurino, Marco Minella, Claudio Minero, Duc N. Tran, Rajesh S. Bhosale, Yuanhai Su, Natan J. W. Straathof, Sophie Carenco, José J. Baldoví, Haralampos N. Miras, Christoph Gamer, Eugenio Coronado, Paola Ceroni, Sandeep More, Guillermo Mínguez Espallargas, Aurelio Mateo-Alonso, Davide Vione, Myriam Roy, Volker Hessel, Nicolai Cramer, Giacomo Bergamini, Marc Gingras, and Mónica Giménez-Marqués

Subjects
Continuous flow, Organic Chemistry, General Chemistry, Photochemistry, Catalysis, Characterization (materials science), Metal, chemistry.chemical_compound, chemistry, visual_art, visual_art.visual_art_medium, Pyrene, Cover (algebra), Luminescence, HOMO/LUMO
Published
2014
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12. Back Cover: Synthesis, Characterization, and Metal Ion Coordination of a Multichromophoric Highly Luminescent Polysulfurated Pyrene (Chem. Eur. J. 34/2014)

Author

Marc Gingras, Paola Ceroni, Myriam Roy, Giacomo Bergamini, and Andrea Fermi

Subjects
Chemistry, Energy transfer, Organic Chemistry, Supramolecular chemistry, General Chemistry, Chromophore, Photochemistry, Catalysis, Characterization (materials science), Metal, chemistry.chemical_compound, Ultraviolet visible spectroscopy, visual_art, visual_art.visual_art_medium, Pyrene, Luminescence
Published
2014
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