Ordered porous films of organically-modified silica prepared by a two-step replicating process

An ordered porous film of vinyl-modified silica was prepared by a two-step replication of the honeycomb structure of anodic porous alumina. Preparation of the negative porous structure of anodic porous alumina followed by the formation of the positive structure with vinyl-modified silica resulted in a honeycomb structure of vinyl-modified silica. The silica film has nearly uniform, closely packed nanoholes with an average diameter of 198 nm and length of 11 μm. The porous silica film was characterized by using the X-ray photoelectron spectroscopy (XPS) and FT-IR techniques.