Tunable Nanoporous Network Polymer Nanocomposites having Size-Selective Ion Transfer for Dye-Sensitized Solar Cells

摘要

Nanoporous network polymer nanocomposites with tunable pore size for size-dependent selective ion transport are successfully prepared via the surface-induced cross-linking polymerization of methyl methacrylate (MMA) and 1,6-hexanediol diacrylate (HDDA) on the surfaces of nanocrystalline TiO_2 particles. The morphologies of the porous network polymer layer and nanopores were investigated by transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), and Brunauer-Emmett-Teller (BET) experiments. The porous layer size-selectively screened the ions that contacted the nanocrystalline TiO_2 particles, as demonstrated by ion conductivity measurements, electrochemical impedance spectroscopy (EIS), and transient absorption spectroscopy (TAS).