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Electrogenerated Chemiluminescence for Potentiometric Sensors
Journal article   Peer reviewed

Electrogenerated Chemiluminescence for Potentiometric Sensors

G A Crespo, G Mistlberger and Eric Bakker
Journal of the American Chemical Society, Vol.154(1), pp.205-207
2012
url
https://doi.org/10.1021/ja210600kView
Published Version

Abstract

potentiometric sensors electrogenerated chemiluminescence ECL
We report here on a generic approach to read out potentiometric sensors with electrogenerated chemiluminescence (ECL). In a first example, a potassium ion-selective electrode acts as the reference electrode and is placed in contact with the sample solution. The working electrode of the three-electrode cell is responsible for ECL generation and placed in a detection solution containing tris(2,2′-bipyridyl)ruthenium(II) [Ru(bpy)3 2+] and the coreactant 2-(dibutylamino)ethanol (DBAE), physically separated from the sample by a bridge. Changes in the sample potassium concentration directly modulate the potential at the working electrode, and hence the ECL output, when a constant-potential pulse is applied between the two electrodes. A linear response of the ECL intensity to the logarithmic potassium concentration between 10 μm and 10 mM was found.

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Web Of Science research areas
Chemistry, Multidisciplinary
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