Pierre Hubert Mutin

Siliconnitrogen bond formation by nucleophilic activation of siliconhydrogen bonds

Abstract A method of forming SiN bonds by dehydro-coupling of SiH and NH bonds in the presence of a nucleophilic catalyst is reported. The method is useful for the preparation of silylamines and silazanes and for crosslinking of organometallics polymers.

Hybrid organic-inorganic materials by nonhydrolytic Sol-Gel processes: Organosilsesquioxane-metal oxide hybrids

Organosilsesquioxane-metal oxide hybrid materials prepared by the Sol-Gel process are mainly heterogeneous. In this paper we report the preparation of methylsilsesquioxane-titanium oxide, and methylsilsesquioxane-aluminium oxide hybrid materials by a nonhydrolytic sol-gel process involving the etherolysis-condensation of a mixture of methyltrichlorosilane and metal chloride. The Si/M ration in the xerogels were very closed to the one of the starting solutions. 29Si MAS NMR study has revealed that the methylsilsesquioxane-titanium oxide xerogel was heterogeneous at the atomic level. The spectrum of the hybrid containing aluminium, has shown beside a peak at −66 ppm corresponding to MeSi(OSi)3 environment, another peak at −47 ppm which was ascribed to MeSi(OAl)3 environment. The presence of only these two sites might be due to their stability.

Non-Hydrolytic Sol–Gel Routes

The non-hydrolytic sol–gel process is based on non-hydrolytic condensations in anhydrous media. In the last decade, this process has established itself as a simple and powerful methodology for the design of a wide range of oxide and mixed oxide materials. Non-hydrolytic sol–gel proved particularly interesting for the preparation of crystalline nanoparticles and mesoporous mixed oxides, with potential applications in catalysis, photocatalysis, energy, and gas-sensing.