Photoluminescence of tris(2,2′-bipyridine)ruthenium(II) ions intercalated in layered niobates and titanates: Effect of interlayer structure on host-guest and guest-guest interactions

Teruyuki Nakato, Kazuhiko Kusunoki, Katsuaki Yoshizawa, Kazuyuki Kuroda, Masao Kaneko

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    Abstract

    Intercalation compounds of layered niobates and titanates with tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)3 2+, bpy = 2,2′-bipyridine) ions were synthesized and their photoluminescent behavior was investigated. K4Nb6O17, HTiNbO5, and H2Ti4O9 were used as the host. Ru(bpy)3 2+ ions were intercalated by displacement of pre-intercalated alkylammonium ions or direct reaction and were densely present in the interlayer spaces. Luminescence lifetimes of the intercalated Ru(bpy)3 2+ ions showed concentration quenching of the emission. The guest displacement technique yielded some intercalation compounds where alkylammonium ions were co-intercalated with Ru(bpy)3 2+ ions, and the co-intercalated photoinactive ions suppressed the concentration quenching to some extent. Ru(bpy)3 2+ ions were distorted and in close contact with the host lattices in the interlayer spaces of the samples whose interlayer spacing was small. Luminescence decay of these intercalation compounds was fast, suggesting that the emission of the intercalated Ru(bpy)3 2+ ions was quenched by the host lattices.

    Original languageEnglish
    Pages (from-to)17896-17905
    Number of pages10
    JournalJournal of Physical Chemistry
    Volume99
    Issue number51
    Publication statusPublished - 1995

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    titanates
    Ruthenium
    niobates
    ruthenium
    interlayers
    Photoluminescence
    Ions
    photoluminescence
    Intercalation compounds
    ions
    interactions
    intercalation
    Luminescence
    Quenching
    quenching
    luminescence
    ion concentration
    spacing
    life (durability)

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry

    Cite this

    Photoluminescence of tris(2,2′-bipyridine)ruthenium(II) ions intercalated in layered niobates and titanates : Effect of interlayer structure on host-guest and guest-guest interactions. / Nakato, Teruyuki; Kusunoki, Kazuhiko; Yoshizawa, Katsuaki; Kuroda, Kazuyuki; Kaneko, Masao.

    In: Journal of Physical Chemistry, Vol. 99, No. 51, 1995, p. 17896-17905.

    Research output: Contribution to journalArticle

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    abstract = "Intercalation compounds of layered niobates and titanates with tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)3 2+, bpy = 2,2′-bipyridine) ions were synthesized and their photoluminescent behavior was investigated. K4Nb6O17, HTiNbO5, and H2Ti4O9 were used as the host. Ru(bpy)3 2+ ions were intercalated by displacement of pre-intercalated alkylammonium ions or direct reaction and were densely present in the interlayer spaces. Luminescence lifetimes of the intercalated Ru(bpy)3 2+ ions showed concentration quenching of the emission. The guest displacement technique yielded some intercalation compounds where alkylammonium ions were co-intercalated with Ru(bpy)3 2+ ions, and the co-intercalated photoinactive ions suppressed the concentration quenching to some extent. Ru(bpy)3 2+ ions were distorted and in close contact with the host lattices in the interlayer spaces of the samples whose interlayer spacing was small. Luminescence decay of these intercalation compounds was fast, suggesting that the emission of the intercalated Ru(bpy)3 2+ ions was quenched by the host lattices.",
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    T1 - Photoluminescence of tris(2,2′-bipyridine)ruthenium(II) ions intercalated in layered niobates and titanates

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    AU - Nakato, Teruyuki

    AU - Kusunoki, Kazuhiko

    AU - Yoshizawa, Katsuaki

    AU - Kuroda, Kazuyuki

    AU - Kaneko, Masao

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