Alignment of mesoporous silica on a glass substrate by a rubbing method

Hirokatsu Miyata, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    92 Citations (Scopus)

    Abstract

    Alignment of hexagonal mesoporous silica particles was achieved by a simple rubbing method used for the alignment of liquid crystals on a very thin polyimide film coated on a silica glass substrate. Mesoporous silica was synthesized through the hydrolysis of tetraethoxysilane under acidic conditions in the presence of hexadecyltrimethylammonium chloride. The arrangement of the elongated particles was observed with their long axes parallel to the rubbing direction. The maximum aspect ratio of the particles reached ∼100. Both the elongation and alignment of the particles were not observed on the same substrate without the rubbing treatment. The hexagonal channel orientation was confirmed using in-plane X-ray diffraction and high-resolution scanning electron microscopy. The hexagonal mesoporous structure was retained over calcination in air and the adhesion of the particles onto the substrate was greatly improved.

    Original languageEnglish
    Pages (from-to)1609-1614
    Number of pages6
    JournalChemistry of Materials
    Volume11
    Issue number6
    Publication statusPublished - 1999

    Fingerprint

    Silicon Dioxide
    Silica
    Glass
    Substrates
    Liquid Crystals
    High resolution electron microscopy
    Fused silica
    Polyimides
    Calcination
    Liquid crystals
    Chlorides
    Aspect ratio
    Elongation
    Hydrolysis
    Adhesion
    X ray diffraction
    Scanning electron microscopy
    Polymers
    Air
    Direction compound

    ASJC Scopus subject areas

    • Materials Chemistry
    • Materials Science(all)

    Cite this

    Alignment of mesoporous silica on a glass substrate by a rubbing method. / Miyata, Hirokatsu; Kuroda, Kazuyuki.

    In: Chemistry of Materials, Vol. 11, No. 6, 1999, p. 1609-1614.

    Research output: Contribution to journalArticle

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