Alkoxysilylated-derivatives of double-four-ring silicate as novel building blocks of silica-based materials

被引:71
作者
Hagiwara, Yoshiaki [1 ]
Shimojima, Atsushi [3 ]
Kuroda, Kazuyuki [1 ,2 ,3 ]
机构
[1] Waseda Univ, Dept Appl Chem, Shinjuku Ku, Tokyo 1698555, Japan
[2] Waseda Univ, Kagami Mem Lab Mat Sci & Technol, Shinjuku Ku, Tokyo 1690051, Japan
[3] Japan Sci & Technol Agcy, CREST, Tokyo, Japan
关键词
D O I
10.1021/cm0716194
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Novel oligomeric alkoxysilanes consisting of double-four-ring (D4R) units functionalized with mono-, di-, and trialkoxysilyl groups (designated as 1, 2, and 3, respectively) were designed as nanobuilding blocks for synthesizing silica-based nanomaterials. Hydrolysis and polycondensation of these oligomers were performed under acidic conditions. The gelation occurred much faster than monomeric, dimeric, and cubic octameric alkoxysilanes, which should depend on both molecular size and siloxane structures. Structural analyses of the xerogels derived from 1-3 strongly suggested that the D4R units are at least partly retained in their frameworks. The number of alkoxy groups had a large effect on their porosities: the xerogel derived from 2 was a microporous solid with the BET surface area of 600 m(2) g(-1), whereas 1- and 3-derived xerogels had very low BET surface areas. Furthermore, mesostructured silica films were successfully synthesized froth 2 and 3 by using amphiphilic triblock copolymer surfactant as a structure-directing agent. Such an approach will lead to the construction of molecularly designed siloxane networks.
引用
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页码:1147 / 1153
页数:7
相关论文
共 34 条
  • [1] NEW SYNTHETIC ROUTE TO THE HYDRIDOSPHEROSILOXANES OH-H8SI8O12 AND D5H-H10SI10O15
    AGASKAR, PA
    [J]. INORGANIC CHEMISTRY, 1991, 30 (13) : 2707 - 2708
  • [2] A higher yielding route for T8 silsesquioxane cages and X-ray crystal structures of some novel spherosilicates
    Bassindale, AR
    Liu, ZH
    MacKinnon, IA
    Taylor, PG
    Yang, YX
    Light, ME
    Horton, PN
    Hursthouse, MB
    [J]. DALTON TRANSACTIONS, 2003, (14) : 2945 - 2949
  • [3] Brinker CJ, 1999, ADV MATER, V11, P579, DOI 10.1002/(SICI)1521-4095(199905)11:7<579::AID-ADMA579>3.3.CO
  • [4] 2-I
  • [5] CAGLE PC, 1990, MATER RES SOC SYMP P, V180, P29, DOI 10.1557/PROC-180-29
  • [6] MOLECULAR BUILDING-BLOCKS FOR THE SYNTHESIS OF CERAMIC MATERIALS - [SI8O12](OCH3)8
    DAY, VW
    KLEMPERER, WG
    MAINZ, VV
    MILLAR, DM
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1985, 107 (26) : 8262 - 8264
  • [7] COOPERATIVE ORGANIZATION OF INORGANIC-SURFACTANT AND BIOMIMETIC ASSEMBLIES
    FIROUZI, A
    KUMAR, D
    BULL, LM
    BESIER, T
    SIEGER, P
    HUO, Q
    WALKER, SA
    ZASADZINSKI, JA
    GLINKA, C
    NICOL, J
    MARGOLESE, D
    STUCKY, GD
    CHMELKA, BF
    [J]. SCIENCE, 1995, 267 (5201) : 1138 - 1143
  • [8] STRUCTURE ORGANIZATION OF SILICATE POLYANIONS WITH SURFACTANTS - A NEW APPROACH TO THE SYNTHESES, STRUCTURE TRANSFORMATIONS, AND FORMATION MECHANISMS OF MESOSTRUCTURAL MATERIALS
    FYFE, CA
    FU, GY
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (38) : 9709 - 9714
  • [9] Porous materials derived from trigonal-prismatic {Si6O9} and cubane {Si8O12} cage monomers
    Harrison, PG
    Kannengiesser, R
    [J]. CHEMICAL COMMUNICATIONS, 1996, (03) : 415 - 416
  • [10] Silicate cages: precursors to new materials
    Harrison, PG
    [J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1997, 542 (02) : 141 - 183