This invention relates to a hybrid material composed of organic-inorganic particles, characterised in that said particles have a diameter of between 10 and 800 nm, and it is structured in two portions: - an inner portion that comprises a micellar phase wherein one or more active principles are immersed, - an outer portion composed of an organic-inorganic network formed by inorganic units and organic units covalently bound to one another, forming a spherical network that coats the micellar phase, and to the use thereof in the storage and release of active principles.
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