Luminescence of tris(2,2′-bipyridine)ruthenium(II) cations ([Ru(bpy)3]2+) adsorbed in mesoporous silica

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

doi:10.1021/jp0015123

Luminescence of tris(2,2′-bipyridine)ruthenium(II) cations ([Ru(bpy)₃]²⁺) adsorbed in mesoporous silica

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

86 Citations (Scopus)

Abstract

The adsorption of a cationic luminescence probe, tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]²⁺), into a mesoporous silica was investigated in order to understand the nature of mesoporous silicas as immobilizing media for organic guest species. The adsorption of the probe into the mesoporous silica was conducted by the reaction using a dimethylformamide solution of [Ru(bpy)3]²⁺ chloride. The adsorbed amount of [Ru(bpy)3]²⁺ was controlled by changing the concentration of the solutions. 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 hydratiori of the samples, indicating that the aggregated [Ru(bpy)3]²⁺ ions were dispersed in the mesopore to suppress the self-quenching.

Original language	English
Pages (from-to)	8554-8556
Number of pages	3
Journal	Journal of Physical Chemistry B
Volume	104
Issue number	35
DOIs	https://doi.org/10.1021/jp0015123
Publication status	Published - 2000 Sept 7
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp0015123

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title = "Luminescence of tris(2,2′-bipyridine)ruthenium(II) cations ([Ru(bpy)3]2+) adsorbed in mesoporous silica",

abstract = "The adsorption of a cationic luminescence probe, tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]2+), into a mesoporous silica was investigated in order to understand the nature of mesoporous silicas as immobilizing media for organic guest species. The adsorption of the probe into the mesoporous silica was conducted by the reaction using a dimethylformamide solution of [Ru(bpy)3]2+ chloride. The adsorbed amount of [Ru(bpy)3]2+ was controlled by changing the concentration of the solutions. 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 hydratiori of the samples, indicating that the aggregated [Ru(bpy)3]2+ ions were dispersed in the mesopore to suppress the self-quenching.",

author = "Makoto Ogawa and Tomoyuki Nakamura and Mori, {Jun Ichi} and Kazuyuki Kuroda",

year = "2000",

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doi = "10.1021/jp0015123",

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AU - Ogawa, Makoto

AU - Nakamura, Tomoyuki

AU - Mori, Jun Ichi

AU - Kuroda, Kazuyuki

PY - 2000/9/7

Y1 - 2000/9/7

N2 - The adsorption of a cationic luminescence probe, tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]2+), into a mesoporous silica was investigated in order to understand the nature of mesoporous silicas as immobilizing media for organic guest species. The adsorption of the probe into the mesoporous silica was conducted by the reaction using a dimethylformamide solution of [Ru(bpy)3]2+ chloride. The adsorbed amount of [Ru(bpy)3]2+ was controlled by changing the concentration of the solutions. 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 hydratiori of the samples, indicating that the aggregated [Ru(bpy)3]2+ ions were dispersed in the mesopore to suppress the self-quenching.

AB - The adsorption of a cationic luminescence probe, tris(2,2′-bipyridine)ruthenium(II) ([Ru(bpy)3]2+), into a mesoporous silica was investigated in order to understand the nature of mesoporous silicas as immobilizing media for organic guest species. The adsorption of the probe into the mesoporous silica was conducted by the reaction using a dimethylformamide solution of [Ru(bpy)3]2+ chloride. The adsorbed amount of [Ru(bpy)3]2+ was controlled by changing the concentration of the solutions. 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 hydratiori of the samples, indicating that the aggregated [Ru(bpy)3]2+ ions were dispersed in the mesopore to suppress the self-quenching.

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Luminescence of tris(2,2′-bipyridine)ruthenium(II) cations ([Ru(bpy)₃]²⁺) adsorbed in mesoporous silica

Abstract

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