Mixed star-shaped POSS-based molecule with hydroxy group-containing units and azobenzene fragments as two types of arms

Novel branched organic–inorganic nanoparticles with cubic octahedral silsesquioxane core containing the statistically grafted photoactive azobenzene fragments and 2-hydroxyethyl groups were synthesized via hydrosilylation coupling. Preservation of the photochromic properties of the reactants in the final product was revealed.