We prepared novel hybrid mesoporous materials by assembly of silica colloidal particles or SiO?2@Au core-shell particles, followed by pore-filling of the resulting colloidal crystals using surface-initiated polymerization inside the mesopores.  We conducted extensive studies of the molecular and ionic transport through these materials as a function of the mesopore size, polymer structure and environmental conditions such as pH and temperature.  We demonstrated that pore-filled colloidal crystals constitute a novel type of responsive hybrid materials with potential applications in sensors, separations, drug release and fuel cell membranes.  In this talk, we will describe in detail the preparation and transport properties for three examples of these materials: silica colloidal membranes pore-filled with poly(2-(dimethylamino)ethyl methacrylate), colloidal crystals based on SiO2@Au core-shell nanospheres pore-filled with poly(methacrylic acid), and silica colloidal membranes pore-filled with poly(3-sulfopropylmethacrylate).  Finally, we will describe the formation of mesoporous membranes via the self-assembly of polymer-modified silica colloidal spheres.  The spheres carry polymer brushes grafted on the surface of silica through atom transfer radical polymerization (ATRP) and are held together by non-covalent interactions between the polymer brushes.

Hybrid mesoporous materials by assembly of colloidal particles and pore filling

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.