Abstract: The method for manufacturing a composite based on complexes of controlled stability over time using a fibrous inorganic matrix having tunnels and one or more organic compounds incorporated into said tunnels includes the following steps: the fibrous inorganic matrix having tunnels and the organic compound or compounds are provided; the fibrous inorganic matrix having tunnels is mixed with the organic compound or compounds so that said organic compound or compounds are incorporated into the tunnels of the fibrous inorganic matrix; the retention of the organic compound or compounds in said tunnels and their release therefrom by heating said mixture obtained, at a chosen temperature for a defined time, are controlled. The invention applies in particular in a preparation intended for cosmetic, pharmacological, nutri-therapeutic and agri-foodstuff, phytosanitary, petroleum or electronic usage or else in paints.

Abstract: Microstructures formed from fluorinated amphiphiles and mixed fluorinated and non-fluorinated amphiphiles and having the geometry of tubules, helixes and fibers and methods for preparing them. Tubular forms are capable of encapsulating or incorporating bioactive agents or other useful substances for controlled release in vivo.