Free-standing ordered mesoporous silica films synthesized with surfactant-polyelectrolyte complexes at the air/water interface
Solid cetyltrimethylammonium bromide (CTAB) and polyethylenimine (PEI) films self-assemble at the air/water interface. Small angle X-ray scattering (SAXS) measurements show that dried films maintain the same ordered mesostrueture as the films at the air/water interface, and here the effects of PEI concentration and cross-linker (CL) on film mesostrueture were investigated. Free-standing silica fil