Synthesis of a viologen-tetratitanate intercalation compound and its photochemical behaviour

Hirokatsu Miyata, Yoshiyuki Sugahara, Kazuyuki Kuroda, Chuzo Kato

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    53 Citations (Scopus)

    Abstract

    Methyl viologen has been intercalated into the interlayer space of layered tetratitanic acid by a method involving the displacement of guest molecules using an n-propylammonium tetratitanate intercalation compound. The viologen tetratitanate intercalation compound changed colour to blue when irradiated by a mercury lamp under vacuum conditions or a nitrogen atmosphere. The formation of radical cations was confirmed by visible and e.s.r. spectroscopy. The electron donor for the photoreduction is thought to originate from the tetratitanate layers. The colour was stable as long as the vacuum conditions were maintained, and fading did not occur rapidly even after the introduction of air, requiring > 1 h for the colour to fade completely. These results indicate remarkable stability of the viologen radical cations in this intercalation compound.

    Original languageEnglish
    Pages (from-to)2677-2682
    Number of pages6
    JournalJournal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
    Volume84
    Issue number8
    DOIs
    Publication statusPublished - 1988

    Fingerprint

    Viologens
    Intercalation compounds
    intercalation
    Color
    color
    Cations
    synthesis
    Vacuum
    Mercury vapor lamps
    mercury lamps
    cations
    vacuum
    Paraquat
    fading
    photochemical reactions
    interlayers
    Nitrogen
    Spectroscopy
    nitrogen
    atmospheres

    ASJC Scopus subject areas

    • Chemistry(all)

    Cite this

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    abstract = "Methyl viologen has been intercalated into the interlayer space of layered tetratitanic acid by a method involving the displacement of guest molecules using an n-propylammonium tetratitanate intercalation compound. The viologen tetratitanate intercalation compound changed colour to blue when irradiated by a mercury lamp under vacuum conditions or a nitrogen atmosphere. The formation of radical cations was confirmed by visible and e.s.r. spectroscopy. The electron donor for the photoreduction is thought to originate from the tetratitanate layers. The colour was stable as long as the vacuum conditions were maintained, and fading did not occur rapidly even after the introduction of air, requiring > 1 h for the colour to fade completely. These results indicate remarkable stability of the viologen radical cations in this intercalation compound.",
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    AU - Miyata, Hirokatsu

    AU - Sugahara, Yoshiyuki

    AU - Kuroda, Kazuyuki

    AU - Kato, Chuzo

    PY - 1988

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