Mesostructured inorganic films are formed from pre-organized block-copolymer thin films. The diblock copolymer used, poly (d(8)-styrene) block-poly(2-vinylpyridine), was first crosslinked, thus retaining its morphology. Silica and titania were incorporated into the structure and the polymer was subsequently removed, generating mesoporous inorganic films whose morphologies were directly related to those of the block-copolymer template films (see Figure).