Structured hybrid nanoparticles via surface-initiated ATRP of methyl methacrylate from ordered mesoporous silica
Résumé
Structured hybrid nanoparticles were synthesized via surface-initiated atom transfer radical polymerization of MMA from ordered mesoporous silica (QMS) nanoparticles with various morphologies. The design of the QMS particles was adjusted to target either spherical core-shell or cylindrical morphologies with a mean diameter below 400 nm. The polymer growth via ATRP from the silica surface was well-controlled as demonstrated by the macromolecular characteristics of the grafted chains. Original hybrid multilayered nanoparticles composed of either a dense silica core or hollow core; an inner OMS shell showing radial orientation of the mesopores and an outer PMMA shell with controlled thickness were successfully prepared. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.