Controlled synthesis of nanostructured silica-based materials from designed alkoxysilanes |
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Authors: | Atsushi Shimojima Kazuyuki Kuroda |
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Institution: | (1) Present address: Department of Chemical System Engineering, The University of Tokyo, Hongo-7, Bunkyo-ku, Tokyo 113-8656, Japan;(2) CREST, Japan Science and Technology Agency (JST), Kawaguchi-shi, Japan;(3) Department of Applied Chemistry, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo 169-8555, Japan;(4) Kagami Memorial Laboratory for Materials Science and Technology, Waseda University, Nishiwaseda-2, Shinjuku-ku, Tokyo 169-0051, Japan |
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Abstract: | Recent progress in the synthesis of nanostructured silica-based materials through the self-assembly process using well-designed
alkoxysilane precursors is presented. Alkoxysilanes with covalently attached hydrophobic organic tails become amphiphilic
when hydrolyzed to form silanol groups, leading to the formation of various mesostructures upon evaporation of solvents. The
precursors having large oligosiloxane heads are particularly important because of their ability to form cylindrical assemblies,
providing a direct pathway to ordered porous silica by removal of the organic groups. Our recent research includes (i) templated-synthesis
of hierarchically ordered structures and (ii) design of molecules having chemically cleavable bonds to generate pores without
calcination. |
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Keywords: | Inorganic– organic hybrid Nanobuilding block Mesoporous materials |
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