Electrogenerated chemiluminescence from tris(2,2′-bipyridyl)ruthenium(II) immobilized in titania-perfluorosulfonated ionomer composite films

Han Nim Choi, Sung Hee Cho, Won Yong Lee

Research output: Contribution to journalArticle

172 Citations (Scopus)

Abstract

Electrochemical behavior and electrogenerated chemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+) immobilized in sol-gel-derived titania (TIO2)-Nafion composite films coated on a glassy carbon electrode have been investigated. The electroactivity of Ru(bpy)32+ ion exchanged into the composite films and its ECL behavior were strongly dependent upon the amount of Nafion incorporated into the TiO2-Nafion composite films. The ECL sensor of Ru(bpy)3 2+ immobilized in a TiO2-Nafion composite with 50% Nafion content showed the maximum ECL intensities for both tripropylamine (TPA) and sodium oxalate in 0.05 M phosphate buffer solution at pH 7. Detection limits were 0.1 μM for TPA and 1.0 μM for oxalate (S/N = 3) with a linear range of 3 orders of magnitude in concentration. The present ECL sensor showed improved ECL sensitivity and long-term stability, as compared to the ECL sensors based on pure Nafion films. The present Ru(bpy)32+ ECL sensor based on TiO2-Nafion (50%) composite films was applied as an HPLC detector for the determination of erythromycin in human urine samples. The present Ru(bpy)32+ ECL sensor was stable in the mobile phase containing a high content of organic solvent (30%, v/v), in contrast to a pure Nafion-based Ru(bpy)32+ ECL sensor. The detection limit for erythromycin was 1.0 μM, with a linear range of 3 orders of magnitude in concentration.

Original languageEnglish
Pages (from-to)4250-4256
Number of pages7
JournalAnalytical Chemistry
Volume75
Issue number16
DOIs
Publication statusPublished - 2003 Aug 15

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2,2'-Dipyridyl
Chemiluminescence
Ruthenium
Ionomers
Composite films
Sensors
Erythromycin
titanium dioxide
Oxalic Acid
Oxalates
perfluorosulfonic acid
Glassy carbon
Organic solvents
Sol-gels
Buffers
Phosphates
Ions
Detectors

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

Cite this

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title = "Electrogenerated chemiluminescence from tris(2,2′-bipyridyl)ruthenium(II) immobilized in titania-perfluorosulfonated ionomer composite films",
abstract = "Electrochemical behavior and electrogenerated chemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+) immobilized in sol-gel-derived titania (TIO2)-Nafion composite films coated on a glassy carbon electrode have been investigated. The electroactivity of Ru(bpy)32+ ion exchanged into the composite films and its ECL behavior were strongly dependent upon the amount of Nafion incorporated into the TiO2-Nafion composite films. The ECL sensor of Ru(bpy)3 2+ immobilized in a TiO2-Nafion composite with 50{\%} Nafion content showed the maximum ECL intensities for both tripropylamine (TPA) and sodium oxalate in 0.05 M phosphate buffer solution at pH 7. Detection limits were 0.1 μM for TPA and 1.0 μM for oxalate (S/N = 3) with a linear range of 3 orders of magnitude in concentration. The present ECL sensor showed improved ECL sensitivity and long-term stability, as compared to the ECL sensors based on pure Nafion films. The present Ru(bpy)32+ ECL sensor based on TiO2-Nafion (50{\%}) composite films was applied as an HPLC detector for the determination of erythromycin in human urine samples. The present Ru(bpy)32+ ECL sensor was stable in the mobile phase containing a high content of organic solvent (30{\%}, v/v), in contrast to a pure Nafion-based Ru(bpy)32+ ECL sensor. The detection limit for erythromycin was 1.0 μM, with a linear range of 3 orders of magnitude in concentration.",
author = "Choi, {Han Nim} and Cho, {Sung Hee} and Lee, {Won Yong}",
year = "2003",
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Electrogenerated chemiluminescence from tris(2,2′-bipyridyl)ruthenium(II) immobilized in titania-perfluorosulfonated ionomer composite films. / Choi, Han Nim; Cho, Sung Hee; Lee, Won Yong.

In: Analytical Chemistry, Vol. 75, No. 16, 15.08.2003, p. 4250-4256.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electrogenerated chemiluminescence from tris(2,2′-bipyridyl)ruthenium(II) immobilized in titania-perfluorosulfonated ionomer composite films

AU - Choi, Han Nim

AU - Cho, Sung Hee

AU - Lee, Won Yong

PY - 2003/8/15

Y1 - 2003/8/15

N2 - Electrochemical behavior and electrogenerated chemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+) immobilized in sol-gel-derived titania (TIO2)-Nafion composite films coated on a glassy carbon electrode have been investigated. The electroactivity of Ru(bpy)32+ ion exchanged into the composite films and its ECL behavior were strongly dependent upon the amount of Nafion incorporated into the TiO2-Nafion composite films. The ECL sensor of Ru(bpy)3 2+ immobilized in a TiO2-Nafion composite with 50% Nafion content showed the maximum ECL intensities for both tripropylamine (TPA) and sodium oxalate in 0.05 M phosphate buffer solution at pH 7. Detection limits were 0.1 μM for TPA and 1.0 μM for oxalate (S/N = 3) with a linear range of 3 orders of magnitude in concentration. The present ECL sensor showed improved ECL sensitivity and long-term stability, as compared to the ECL sensors based on pure Nafion films. The present Ru(bpy)32+ ECL sensor based on TiO2-Nafion (50%) composite films was applied as an HPLC detector for the determination of erythromycin in human urine samples. The present Ru(bpy)32+ ECL sensor was stable in the mobile phase containing a high content of organic solvent (30%, v/v), in contrast to a pure Nafion-based Ru(bpy)32+ ECL sensor. The detection limit for erythromycin was 1.0 μM, with a linear range of 3 orders of magnitude in concentration.

AB - Electrochemical behavior and electrogenerated chemiluminescence (ECL) of tris(2,2′-bipyridyl)ruthenium(II) (Ru(bpy)32+) immobilized in sol-gel-derived titania (TIO2)-Nafion composite films coated on a glassy carbon electrode have been investigated. The electroactivity of Ru(bpy)32+ ion exchanged into the composite films and its ECL behavior were strongly dependent upon the amount of Nafion incorporated into the TiO2-Nafion composite films. The ECL sensor of Ru(bpy)3 2+ immobilized in a TiO2-Nafion composite with 50% Nafion content showed the maximum ECL intensities for both tripropylamine (TPA) and sodium oxalate in 0.05 M phosphate buffer solution at pH 7. Detection limits were 0.1 μM for TPA and 1.0 μM for oxalate (S/N = 3) with a linear range of 3 orders of magnitude in concentration. The present ECL sensor showed improved ECL sensitivity and long-term stability, as compared to the ECL sensors based on pure Nafion films. The present Ru(bpy)32+ ECL sensor based on TiO2-Nafion (50%) composite films was applied as an HPLC detector for the determination of erythromycin in human urine samples. The present Ru(bpy)32+ ECL sensor was stable in the mobile phase containing a high content of organic solvent (30%, v/v), in contrast to a pure Nafion-based Ru(bpy)32+ ECL sensor. The detection limit for erythromycin was 1.0 μM, with a linear range of 3 orders of magnitude in concentration.

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