日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

Fine control of porous structures of mesoporous silica films, prepared through selfassembly of surfactant molecules, is achieved using substrates with surface structural anisotropy. Mesoporous silica films consisting of uniaxially aligned cylindrical pores as well as those with single-crystalline porous structures consisting of hexagonally close-packed spherical pores can be prepared on a rubbing-treated polyimide film by optimizing the preparation conditions. These silica films with controlled in-plane mesoporous structures provide nanocomposite films with optical anisotropy by incorporating proper guest species with optical functionalities. In these nanocomposite films, three-dimensionally controlled orientation of the guest species leads to highly anisotropic optical properties. These films can be applied to optical devices such as low power-consuming lasers using improved optical properties originating from molecular-scale control of materials.