Synthesis and Characterization of Octa(aminophenyl) Polyhedral Silsesquioxane

In the presence of FeCl3·6H2O/C catalyst,octa(nitrophenyl) polyhedral silsesquioxane(ONPS) was successfully reduced to octa(aminophenyl) polyhedral silsesquioxane (OAPS) using hydrazine hydrate with a yield of 93%.Structure and properties of OAPS are characterized by means of FTIR,NMR,elemental and thermal analysis.Its temperature corresponding to 5% weight loss is 338.8 ℃.This shows that OAPS has a high stability to heat.At the same time,mechanism of the reduction of ONPS by hydrazine catalyzed by FeCl3/C was proposed.