Method for preparing organic/inorganic hybrid functionalized solids having a triazole ring

Process for the preparation of a functionalized hybrid solid with an organic-inorganic matrix, crystallized, bearing at least one reactive group based on a triazole ring, from a crystallized hybrid solid with an organic-inorganic matrix, MOF—NH2, containing an inorganic network of metallic sites joined together at least by organic ligands comprising at least one aromatic ring, at least two carboxylate functions CO2− and at least one amine function —NH2, said process comprising at least the following successive stages:

• i/ introduction, in a polar solvent S1, of said crystallized hybrid solid MOF—NH2, at least one organic compound Q containing a nitride function N3 and at least one intermediate reagent R containing a nitrite function NO2 in proportions such that the reaction mixture has the following molar composition, based on one molar equivalent of the function —NH2 present in the solid MOF—NH2:
• 1MOF—NH2:1-150R:1-150Q:100-400S1
• ii/ reaction of said reaction mixture at a temperature between 0 and 100° C. for a time between 1 and 24 hours,
• iii/ introduction, in the reaction mixture, of at least one reagent A comprising at least one alkyne or activated cyanide COCN terminal function, at least one copper-based catalyst C and at least one polar solvent S2 in proportions such that the reaction mixture has the following composition, based on one molar equivalent of the function —NH2 present initially in the solid MOF—NH2:
• 1MOF—NH2:0.1-10C:1-150R:1-150Q:1-150A:100-600(S1+S2)
• iv/ reaction of said reaction mixture at a temperature between 0 and 100° C. for a time between 1 and 48 hours,
• v/ filtration and then washing of said crystallized functionalized hybrid solid,
• vi/ drying of said crystallized functionalized hybrid solid.