Université de Montpellier

The invention relates to a dehydrated hydrogel based on: a) a gelatin compound consisting of gelatin functionalized with at least one photoreactive group P1, and b) a degradable branched-block copolymer comprising at least 2 degradable polymer chains, each degradable polymer chain being functionalized at its extremity with a photoreactive group P2 adapted to react in a crosslinking reaction with the photoreactive group P1. The invention further relates to a method for preparing the dehydrated hydrogel, and to prepare a biomaterial comprising a rehydrated hydrogel obtainable or obtained by mixing the dehydrated hydrogel and an aqueous solution. The biomaterial is useful as would dressing, in particular for treating chronic wounds, such as a bedsore, an ulcer or a diabetic wound.

A copolymer comprising units derived from at least one fluorinated comonomer and at least one comonomer of formula (I): <img class="EMIRef" id="3d330197-b4a8-46d2-9339-73d9c95a19d1-ia01" /> wherein R<1>, R<2> and R<3> are individually selected from the group consisting of: hydrogen atoms; halogen atoms; carboxyl group; carboxylic acid groups; ether groups; thioether groups; amine groups; amide groups; sulfonimide groups; urethane groups; a phosphonic acid group; a sulfonic acid group; a sulfonyl fluoride group; linear, branched and cyclic alkyl groups with or without one or more substituents; aromatic groups with or without one or more substituents; linear, branched and cyclic alkenyl groups with or without one or more substituents; linear, branched and cyclic alkynyl groups with or without one or more substituents; the substituents being selected from halogen atoms; aromatic groups; heterocyclic groups; carboxylic acid-containing groups; amine-containing groups, amide-containing groups; urethane-containing groups; phosphonic acid-containing groups; sulfonic acid-containing groups; sulfonyl fluoride-containing groups; thioether-containing groups and ether-containing groups; wherein n is from 0 to 5, preferably from 0 to 3, even more preferably from 0 to 2. The invention also relates to a method for preparing the copolymer as well as a use of the copolymer as a coating agent or a membrane.

The present disclosure relates to a laser light source device (1), comprising:- a semiconductor substrate (3) comprising an active layer (9),- an electron exciting device for exciting electrons within the active layer (9),- a resonant optical cavity formed within the semiconductor substrate and containing the active layer (9), and- a first mirror (5) and a second mirror (2) extending substantially parallel to one another, the resonant optical cavity extending between the first mirror (5) and the second mirror (2),wherein the laser light source device (1) is configured to emit light radiation when:- a magnetic field (M) is applied on the active layer (9), and- the electron exciting device excites electrons within the active layer (9) so as to allow strong light-matter coupling resulting in the generation of Landau polaritons within the resonant optical cavity, the radiation having a frequency superior or equal to 0.5 THz and inferior or equal to 10 THz.

L'invention concerne un procédé de recyclage des membranes ionomères d'acide perfluorosulfonique (PFSA) utilisées dans diverses applications, comme pour la conversion et le stockage de l'énergie (piles à combustible à membrane échangeuse de protons ou PEMFC, batteries à flux redox), la production d'hydrogène (électrolyseurs d'eau), l'industrie du chlore et des alcalis, et les technologies de diagnostic médical. Le procédé de l'invention comprend une étape qui consiste à disperser la membrane dans un liquide ionique dans certaines conditions de température et de temps et de récupérer l'ionomère afin de reconstituer une membrane conductrice protonique.

The invention relates to the use of a mechanical force to generate a mechanochemical reaction in the implementation of a process of preparation of immunomodulatory drugs of Formula (I) or a pharmaceutically acceptable salt thereof, and their process of preparation.

The present invention belongs to the field of renewable energy and green energy production, and in particular to the field of solar cells. The present invention relates to a new versatile family of perovskite, perovskite based solar cells, and in particular to a perovskite comprising a trianglamine salt, the use of a trianglamine salt as an adduct in a perovskite. The invention also relates to the process of synthesis of a perovskite according to the invention and the use of said perovskite in energy production devices.

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