Titanium based inorganic-organic hybrid solid material, method for preparing same and uses thereof

An inorganic-organic hybrid solid material based on titanium, wherein said inorganic-organic hybrid solid material has a pseudo-cubic crystalline structure and that it is constituted exclusively of units of formula (I) below:

• TiaOb(OH)c[(−OOC)—X-#]d (I)
• in which:
• X is an organic spacer and represents a saturated or unsaturated, linear or branched, aliphatic chain having 2 to 12 carbon atoms;
• a monocyclic, bicyclic or tricyclic hydrocarbon-based aromatic group that is unsubstituted or that is substituted by one or more substituents independently chosen from a halogen atom and amino, nitro, hydroxyl, C1-C4 trifluoroalkyl and C1-C4 alkyl groups;
• a benzophenone group;
• a monocyclic or bicyclic heteroaromatic group in which the ring(s) is(are) 5- or 6-membered ring(s), said group containing at least one heteroatom chosen from nitrogen and sulfur and being unsubstituted or substituted by one or more substituents R independently chosen from a halogen atom and amino, nitro, hydroxyl, C1-C4 trifluoroalkyl and C1-C4 alkyl groups;
• a and b, which are identical or different, are integers varying from 1 to 16 inclusively;
• c and d, which are identical or different, are integers varying from 1 to 32 inclusively;
• the indices a, b, c and d adhere to the relation 4a=2b+c+d;
• the titanium atoms form a purely inorganic elementary building block constituted of titanium oxo complexes;
• # is the point through which two units of formula (I) are joined together;
• # represents a covalent bond between a carbon atom belonging to the spacer X and the carbon atom of a carboxylate group COO− of another unit of formula (I) and in which the two oxygen atoms of the carboxylate group belong respectively to two adjacent octahedral titanium oxo complexes of an elementary building block of said other unit of formula (I);
• said units of formula (I) together forming a three-dimensional structure and defining cavities having a free diameter of 4 to 40 Å that are accessible through triangular apertures having dimensions of 4 to 15 Å.