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

*この研究の対応する著者

研究成果: Article査読

78 被引用数 (Scopus)

抄録

Intercalation compounds of layered niobates and titanates with tris(2,2′-bipyridine)ruthenium(II) (Ru(bpy)32+, bpy = 2,2′-bipyridine) ions were synthesized and their photoluminescent behavior was investigated. K4Nb6O17, HTiNbO5, and H2Ti4O9 were used as the host. Ru(bpy)32+ 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)32+ ions showed concentration quenching of the emission. The guest displacement technique yielded some intercalation compounds where alkylammonium ions were co-intercalated with Ru(bpy)32+ ions, and the co-intercalated photoinactive ions suppressed the concentration quenching to some extent. Ru(bpy)32+ 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)32+ ions was quenched by the host lattices.

本文言語English
ページ(範囲)17896-17905
ページ数10
ジャーナルJournal of physical chemistry
99
51
DOI
出版ステータスPublished - 1995 1 1

ASJC Scopus subject areas

  • 工学(全般)
  • 物理化学および理論化学

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