Preparation of POSS derivatives by the dehydrogenative condensation of T8H with alcohols

Abstract

POSS derivatives were synthesized by the dehydrogenative reaction of octahydrosilsesquioxane with alcohols. The reaction with 2-methacryloyloxyethanol, 1-methacryloyloxy-2-propanol, and diphenyl methanol provided corresponding octaalkoxylated POSS derivatives. The reaction with ethylene glycol provided silica gel, while the reaction with 2,3-butanediol or pinacol provided polymers and oligomers, respectively. The product by the reaction of POSS with 2,2-butanediol was spin-coated on a silicon wafer and heated to provide a silica coating film with a pencil-hardness of 2H.