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3 results on '"Clément Anfray"'

1. Functional impact of oxygen-saturated zeolite nanoparticles on macrophages in the context of glioblastoma: an in vitro and in vivo study

Author

Aurélie, Ferre E., primary, Sarah, Komaty, additional, Charly, Hélaine, additional, Clément, Anfray, additional, Sajjad, Ghojavand, additional, Julie, Coupey, additional, Romaric, Saulnier, additional, Benoit, Bernay, additional, Laurent, Chazalviel, additional, Svetlana, Mintova, additional, and Samuel, Valable, additional

Published
2023
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2. Copper exchanged FAU nanozeolite as non-toxic nitric oxide and carbon dioxide gas carrier

Author

Valentin Valtchev, Charly Hélaine, Clément Anfray, Richard Retoux, Valerie Ruaux, Sarah Komaty, Kamila Goldyn, Samuel Valable, Svetlana Mintova, Laboratoire catalyse et spectrochimie (LCS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Imagerie et Stratégies Thérapeutiques des pathologies Cérébrales et Tumorales (ISTCT), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de cristallographie et sciences des matériaux (CRISMAT), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), and Normandie Université (NU)-Institut de Chimie du CNRS (INC)

Subjects
biomedical applications, non-toxic, [SDV]Life Sciences [q-bio], Metal-exchanged nanozeolites, Sodium, chemistry.chemical_element, 02 engineering and technology, gas adsorption, 010402 general chemistry, 7. Clean energy, 01 natural sciences, Nitric oxide, chemistry.chemical_compound, Adsorption, [CHIM]Chemical Sciences, General Materials Science, Fourier transform infrared spectroscopy, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Copper, 0104 chemical sciences, chemistry, gas carrier, Mechanics of Materials, Carbon dioxide, 0210 nano-technology, Nuclear chemistry
Abstract

CERVOXY COLL; International audience; A growing interest is currently directed to find an efficient NO and CO2 gas carriers for biomedical applications. The gas adsorption properties of sodium- (Na-X) and copper- (Cu-X) containing FAU nanozeolites toward nitric oxide and carbon dioxide were studied. The materials were fully characterised by XRD, TEM, ICP, DLS and in-situ FTIR. The as-prepared Na-X showed higher gas adsorption ability towards carbon dioxide, whereas the ion-exchanged Cu-X was more efficient adsorbent with regards to nitric oxide. In addition, the cytotoxicity tests disclosed that both nanozeolites have no toxicity making them suitable for further tests in biomedical field as gas transporters.

Published
2019

3. Synthesis and encapsulation of fluorescein in zeolite Y

Author

Stanisław Kowalak, Jacek Gapiński, Benjamin Ménard, Clément Anfray, Svetlana Mintova, Małgorzata Łukarska, Samuel Valable, Aldona Jankowska, Neurodégénérescence : modèles et stratégies thérapeutiques (NMST), Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU), Imagerie et Stratégies Thérapeutiques des pathologies Cérébrales et Tumorales (ISTCT), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Equipe de recherche Louis Josserand, Université Jean Moulin - Lyon 3 (UJML), Université de Lyon-Université de Lyon, Laboratoire catalyse et spectrochimie (LCS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Université de Caen Normandie (UNICAEN), Normandie Université (NU), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), and Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Phthalic anhydride, 02 engineering and technology, General Chemistry, Resorcinol, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Photobleaching, Fluorescence, 0104 chemical sciences, Catalysis, chemistry.chemical_compound, chemistry, Transition metal, Mechanics of Materials, [CHIM]Chemical Sciences, Organic chemistry, General Materials Science, Fluorescein, 0210 nano-technology, Zeolite, Nuclear chemistry
Abstract

Fluorescein was entrapped inside FAU type zeolite (Y) by generating it from resorcinol and phthalic anhydride. Prior to the formation of fluorescein, zeolite Y was modified with various cations (H, Zn, Ce, Na, K). The modified zeolite acted as catalysts for the fluorescein Friedel–Crafts reaction synthesis, while at the same time it played a role of matrix for the stabilization and homogeneous dispersion of the guest molecules. The nature of the different cations influenced the content of fluorescein generated in the zeolite, and favoured the formation of some dye isomers (i.e. anion, dianion, cation or transition metal complex). The contribution of different fluorescein derivatives in the products was reflected in their absorption and fluorescence properties. The H-, Ce-, and Zn- containing Y zeolites revealed the highest content of fluorescein due to their distinct acid active sites. The composites with H- and ZnY zeolites indicated much higher fluorescence than that of the pristine fluorescein. Moreover, fluorescein in zeolite Y matrices did not show any photobleaching under continuous illumination (λ = 730 nm, in a two-photon experiment for 180 s), which suggests that these materials could be used for biomedical applications.

Published
2016

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