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Affichage des publications 291 à 300 sur 980 au total

ou physique

Mechanofluorochromism of pyrenyl acrylates with different substitutional position and steric hindrance

Solid-state emission color change upon mechanical stimuli, known as mechanofluorochromism (MFC), is reported for pyrenyl acrylates. The C-1- and C-4-alkenylated pyrenes ((E)-Ethyl-3-(Pyren-1-yl)acrylate and (E)-Ethyl-3-(Pyren-4-yl)acrylate,…

Yuichi Hirai, Anna Wrona-Piotrowicz, Janusz Zakrzewski, Arnaud Brosseau, Rémi Métivier, Clémence Allain

Journal of Photochemistry and Photobiology A: Chemistry -

Chimie

Thermoresponsive Fluorescence Switches Based on Au@pNIPAM Nanoparticles

Despite numerous studies emphasizing the plasmonic impact on fluorescence, the design of a dynamic system allowing on-demand fluorescence switching in a single nanostructure remains challenging. The reversibility of fluorescence switching and the…

Dana Kamzabek, Brieuc Le Dé, Liliane Coche-Guérente, Fabien Miomandre, Galina V Dubacheva

Langmuir -

Chimie-Physique

Design and property investigation on a five-interaction-based fluorescent anion receptor clip

A molecular clip combining a doubly substituted fluorescent anion-π donor probe and two flexible arms bearing H-bond motifs constitutes a new generation of anion receptors. Five simultaneous non-covalent interactions are highlighted by theoretical…

Romain Plais, Hamza Boufroura, Guy Gouarin, Anne Gaucher, Violette Haldys, Arnaud Brosseau, Gilles Clavier, Jean-Yves Salpin, Damien Prim

RSC Advances -

ou physique

A Photo- and Redox-Driven Two-Directional Terthiazole-Based Switch: a Combined Experimental and Computational Investigation

Terthiazoles with redox-active substituents like an N-methyl pyridinium group and ferrocene have been synthesized and their photo- and electro-chromic behaviors were investigated. The presence of two lateral N-methyl pyridinium substituents in the…

Nicolò Baggi, Anne Léaustic, Sihem Groni, Elodie Anxolabéhère-Mallart, Régis Guillot, Rémi Métivier, François Maurel, Pei Yu

Chemistry - A European Journal -

Polymères

Enhanced mechano-responsive fluorescence in polydiacetylene thin films through functionalization with tetrazine dyes: photopolymerization, energy transfer and AFM coupled to fluorescence microscopy studies

The development of mechano-responsive fluorescent materials is essential for the design and construction of reliable and versatile sensors for mechanical stress. Herein, novel energy transfer-based systems with tetrazine fluorophore and a…

Luca Polacchi, Arnaud Brosseau, Régis Guillot, Rémi Métivier, Clémence Allain

Physical Chemistry Chemical Physics -

Matière Condensée

Tetrazine molecules as efficient electronic diversion channel in 2D organic-inorganic perovskites

Taking advantage of an innovative design concept for layered halide perovskites with active chromophores acting as organic spacers, we present here the synthesis of two novel two-dimensional (2D) hybrid organic-inorganic halide perovskites…

Ferdinand Lédée, Pierre Audebert, Gaëlle Trippé-Allard, Laurent Galmiche, Damien Garrot, Jérome Marrot, Jean‐sébastien Lauret, Emmanuelle Deleporte, Claudine Katan, Jacky Even, Claudio Quarti

Materials Horizons -

Chimie

Fluorescent molecular probe based optical fiber sensor dedicated to pH measurement of concrete

An optical fiber sensor based on a fluorescent molecular probe has been developed to measure the pH of cementitious materials, from the early stages of the material hydration. A fluorescent molecular probe, Naphth-AlkyneOMe is en-trapped in a cross…

Ayedah Tariq, Jalal Baydoun, Charlotte Rémy, Rasta Ghasemi, Jean-Pierre Lefevre, Cédric Mongin, Alexandre Dauzeres, Isabelle Leray

Sensors and Actuators B: Chemical -

Chimie organique

Multi‐Directional Mechanofluorochromism of Acetyl Pyrenes and Pyrenyl Ynones

A series of acetyl pyrenes and pyrenyl ynones with and without tert-butyl groups showed distinct mechanofluorochromism (MFC). Four pairs of polymorphic solids were found out of six compounds and interestingly, each of them showed hypsochromic,…

Yuichi Hirai, Lucie Laize‐générat, Anna Wrona‐piotrowicz, Anna Makal, Arnaud Brosseau, Laurent Michely, Davy‐louis Versace, Clémence Allain, Rémi Métivier

ChemPhysChem -

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