Tetra-functional double-decker silsesquioxanes as anchors for reactive functional groups and potential synthons for hybrid materials.

A series of double-decker silsesquioxane derivatives with four reactive functional groups were designed, efficiently synthesized, and characterized. These novel inorganic-organic hybrids show highly attractive features for applications as building blocks with Si-O-Si rigid cores (good thermal properties) with four reactive moieties, which can be functionalized in further processes.