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AssigneesUniversite Claude Bernard Lyon I, Centre National De La Recherche Scientifique, FOI Swedish Defence Research Agency
InventorsFrédéric Chaput, Stéphane Parola, César Lopes, Denis Chateau, Cédric Desroches
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The invention concerns a preparation process of a hybrid organic-inorganic material including the following successive steps: a) preparation of a neutral organosilicon sol in at least one organic solvent, b) incorporation of a doping agent into the neutral organosiliconsol, and production of a doped sol, c) incorporation into the doped sol, of an accelerating agent in order to activate the subsequent gelation of the sol, d) condensation of the sol in order to obtain a crosslinked gel, e) drying of the gel and production of a stable doped gel. and the material obtainable by such a method.
A hybrid organic-inorganic material constituted by a silica network in which at least one doping agent, representing at least 30% in mass of the material, is included, wherein the hybrid organic-inorganic material is a massive monolith material and the doping agent is not functionalized with siloxane groups and is selected from the group consisting of photochromic agents and optical power limiting agents.
A hybrid organic-inorganic material constituted by a silica network in which at least one doping agent, representing at least 30% in mass of the hybrid organic-inorganic material, is included, the doping agent being selected from the group consisting of photochromic agents and optical power limiting agents, the hybrid organic-inorganic material
Dependencies are inferred from the claim text.