The organic/inorganic hybrid and hollow particles have been attracting much attention due to the practical advantages such as a high specific surface area,a low density,and a double interface as compared to solid-core particles.Recently,poly[2-(N,N-dimethylamino)ethyl methacrylate](PDMAEMA)was found to catalyze hydrolysis and successive polycondensation of metal alkoxides as a precursor of metal oxides.