Development of Novel Fluorinated Nanomaterials by the Use of Fluorinated Organic/Inorganic Polymer Hybrids as Key Materials

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In this study, synthesis of fluoroalkyl end-capped oligomers/inorganic polymer hybrids have been studied in detail from the viewpoints of the development of new fluorinated functional nanomaterials.In 2004,it was found that fluoroalkyl end-capped acrylic acid oligomer-encapsulated magnetic nanoparticles were prepared by the coprecipitation of aqueous ferric and ferrous ions in the presence of the corresponding oligomers under alkaline conditions. In addition, nanometer size-controlled gold particles were prepared under mild conditions by reducing the corresponding metal precursor in the presence of self-assembled molecular aggregates formed by fluoroalkyl end-capped oligomers.In 2005,it was found that the stable gold nanoparticles protected by these fluorinated molecular aggregates were applied to the dispersion above the poly(methyl methacrylate) film surface. Furthermore, fluoroalkyl end-capped oligomer-encapsulated magnetic nanoparticles were also applied to the dispersion of magnetic particles on the poly(methyl methacrylate) film surface to exhibit not only the surface active property imparted by fluorine but also magnetic behavior toward a permanent magnet. In particular, we have succeeded in the development of the fluorinated functional polymer hybrids possessing a biological property such as an antibacterial activity. Therefore, these fluorinated organic/inorganic polymer hybrids have high potential for new fluorinated functional nanomaterials.