Abstract: The DMCB/SiO₂ and DMTB/SiO₂ organic inorganic nanocomposite thin films were prepared by using super molecular self-assembly method on glass substrate, with the surfactant DMCB and DMTB as both the structure directing agent and the monomer to be polymerized, respectively. The as-deposited film was heated at a proper temperature and duration to allow the polymerization of the surfactant, which contributes to increasing the mechanical strength and stability of the film. The unpolymerized and polymerized films were characterized by FTIR, X-ray diffraction, and TEM. A model was also suggested to illustrate the structure of the as deposited film. The results also indicated that heat treatment of the as-deposited film led to polymerization of the organic phase and hence to increase the mechanical strength of the film. The results indicated that the films were composed of organic and inorganic layers with orderly interlaced arrangement and the distance between organic layer and inorganic layer was 3.48 nm(DMCB/SiO₂), 3.44 nm(DMTB/SiO₂) before polymerization and 2.84 nm(DMCB/SiO₂), 2.92 nm(DMTB/SiO₂) after polymerization, respectively. These films will be favourable for catalysis, optics and electronics or lubrication films.

Key words: Super molecular self assembly, Polymeriable surfactant, Structure directing agent, Order nanostructure, Composite nanostructure