Incorporation of tris(2,2′-bipyridine)ruthenium(II) cations ([Ru(bpy)3]2+) into a mesoporous silica

Makoto Ogawa, Tomoyuki Nakamura, Jun Ichi Mori, Kazuyuki Kuroda

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32 Citations (Scopus)

Abstract

The luminescence characteristics of tris(2.2'-bipyridine)ruthenium(II) ([Ru(bpy)3]2+) adsorbed on a mesoporous silica was investigated. The adsorption of the complex cation into the mesoporous silica was conducted by the reaction using a dimethylformamide solution of [Ru(bpy)3]2+ chloride hexahydrate. The amount of adsorbed [Ru(bpy)3]2+ was controlled by changing the concentration of the solution. When the samples were dehydrated, the adsorbed [Ru(bpy)3]2+ ions aggregated to cause self-quenching of the luminescence. The luminescence was intensified dramatically upon hydration of the samples, indicating that the aggregated [Ru(bpy)3]2+ ions were dispersed in the mesopore to suppress the self-quenching. The luminiscence characteristics of the adsorbed [Ru(bpy)3]2+ significantly changed upon washing, showing the possible role of the co-adsorbed Cl- ions.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume48
Issue number1-3
DOIs
Publication statusPublished - 2001 Nov 1

Keywords

  • FSM
  • Luminescence
  • Probe
  • Tris(2,2′-bipyridine)ruthenium(II)complex

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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