Phenylene-bridged mesoporous organosilica films with uniaxially aligned mesochannels

Takashi Suzuki, Hirokatsu Miyata, Kazuyuki Kuroda

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    The alignment of mesochannels in a phenylene-bridged mesoporous organosilica film is successfully controlled by using a substrate with a rubbing-treated polyimide film. The films are prepared by two different procedures: the hydrothermal deposition process and the so-called evaporation-induced self-assembly process. The narrow alignment distribution of mesochannels is achieved by the interfacial hydrophobic interactions between alkyl chains of surfactant and the elongated polymer chains of rubbing-treated polyimide. The molecular-scale ordering of the framework in the films is low, unlike those in mesoporous organosilica powders and films prepared under basic conditions, though the thickness of the pore walls is comparable to the molecular size. The emission behaviour in the ultraviolet region, which is sensitive to inter-phenylene interactions, is influenced by synthesis and thermal treatment temperatures, irrespective of the preparative methods. The changes in the spectra indicate that the major emissive species changes from the excited monomer to the excimer with the increase of temperature. These organic-inorganic hybrid films will find various applications by combining functionalities of organic and inorganic moieties and highly controlled nanospaces.

    Original languageEnglish
    Pages (from-to)1239-1244
    Number of pages6
    JournalJournal of Materials Chemistry
    Volume18
    Issue number11
    DOIs
    Publication statusPublished - 2008

    Fingerprint

    polyimides
    Polyimides
    alignment
    excimers
    Surface-Active Agents
    Powders
    Self assembly
    self assembly
    Polymers
    Evaporation
    Surface active agents
    monomers
    Monomers
    surfactants
    Heat treatment
    evaporation
    interactions
    porosity
    Temperature
    temperature

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Materials Chemistry
    • Materials Science(all)

    Cite this

    Phenylene-bridged mesoporous organosilica films with uniaxially aligned mesochannels. / Suzuki, Takashi; Miyata, Hirokatsu; Kuroda, Kazuyuki.

    In: Journal of Materials Chemistry, Vol. 18, No. 11, 2008, p. 1239-1244.

    Research output: Contribution to journalArticle

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