Silica nanoparticles with a hybrid organic-inorganic shell

Non-agglomerated nanoparticles of an average diameter of 200 nm with a hybrid organic inorganic shell were prepared by reacting the COOH groups of poly(N-dicarbazolyl-lysine)covered silica nanoparticles with zirconium tert-butoxide, Zr(OtBu)(4), followed by sol-gel processing.