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Affichage des publications 441 à 450 sur 1007 au total

Chimie

Fluorenylporphyrins functionalized by electrochromic ruthenium units as redox-triggered fluorescence switches

Two dyads containing tris-and tetrakis-meso-fluorenyl-substituted porphyrin and ethynylruthenium units, 1 and 2, were investigated by emission spectro-electrochemical (SEC) methods for their potential use as fluorescence switches. The ruthenium…

Xu Zhang, Seifallah Abid, Limiao Shi, J. A. Gareth Williams, Mark A. Fox, Fabien Miomandre, Clarisse Tourbillon, Jean-Frédéric Audibert, Olivier Mongin, Frédéric Paul, Christine O. Paul-Roth

Dalton Transactions -

Chimie organique

Renewing accessible heptazine chemistry: 2,5,8-tris(3,5-diethyl-pyrazolyl)-heptazine, a new highly soluble heptazine derivative with exchangeable groups, and examples of newly derived heptazines and their physical chemistry

We have prepared 2,5,8-tris(3,5-diethyl-pyrazolyl)-heptazine, the first highly soluble heptazine derivative possessing easily exchangeable leaving groups. We present its original synthesis employing mechanochemistry, along with a few examples of its…

Laurent Galmiche, Clémence Allain, Tuan Le, Régis Guillot, Pierre Audebert

Chemical Science -

Chimie analytique

Core–shell polymeric nanoparticles comprising BODIPY and fluorescein as ultra-bright ratiometric fluorescent pH sensors

A new ratiometric fluorescent pH nanosensor is presented. It is based on ultrabright nanoparticles containing two spatially separated fluorophores: BODIPY covalently linked to the polystyrene core and fluorescein grafted to the nanoparticle shell…

Chloé Grazon, Yang Si, Jean-Pierre Placial, Jutta Rieger, Rachel Méallet-Renault, Gilles Clavier

Photochemical & Photobiological Sciences -

Virologie

Synthesis and characterization of various 5′-dye-labeled ribonucleosides

A novel set of visibly coloured dye-labeled 5′-nucleosides, including s -tetrazine (orange), dicyanomethylene-4 H -pyran (yellow), benzophenoxazinone (pink), 9,10-anthraquinone (blue) and azobenzene (red) chromophores, were prepared, and their…

Coralie de Schutter, Vincent Roy, Patrick Favetta, Corentin Pavageau, Stéphane Maisonneuve, Nicolas Bogliotti, Juan Xie, Luigi A. Agrofoglio

Organic & Biomolecular Chemistry -

photonique

Burning TADF Solids Reveals their Excitons’ Mobility tototo

Thermally Activated Delayed Fluorescence (TADF) compounds contribute to the light emission of an optoelectronic device by harvesting both their singlet and triplet states. But quenching limits such benefits at high current densities. In the case of…

Zhengyu Zhang, Arnaud Brosseau, Margaux Elie, Matthieu Hamel, Sylvain Gaillard, Robert Bernard Pansu

Central European Conference on Photochemistry 2018 -

photonique

Burning TADF Solids Reveals their Excitons’ Mobility

Thermally Activated Delayed Fluorescence (TADF) compounds contribute to the light emission of an optoelectronic device by harvesting both their singlet and triplet states. But quenching limits such benefits at high current densities. In the case of…

Zhengyu Zhang, Arnaud Brosseau, Margaux Elie, Matthieu Hamel, Sylvain Gaillard, Robert Bernard Pansu

Central European Conference on Photochemistry 2018 -

Chimie

Metal‐Free Synthetic Approach to 3‐Monosubstituted Unsymmetrical 1,2,4,5‐Tetrazines Useful for Bioorthogonal Reactions

A facile, efficient and metal‐free synthetic approach to 3‐monosubstituted unsymmetrical 1,2,4,5‐tetrazines is presented. Dichloromethane (DCM) is for the first time recognized as a novel reagent in the synthetic chemistry of tetrazines. Using this…

Yangyang Qu, François‐Xavier Sauvage, Gilles Clavier, Fabien Miomandre, Pierre Audebert

Angewandte Chemie International Edition -

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