Quantitative structural characterization of POSS and octavinyl-POSS nanocomposites by solid state NMR

► Quantitative cross polarization between 1H and 29Si is successfully achieved. ► The ratio between two different 29Si atoms in chloromethylphenyl isobutyl POSS is obtained. ► The average numbers of reacted vinyl groups in octavinyl-POSS nanocomposites are determined.