Colorimetric Readout for Potentiometric Sensors with Closed Bipolar Electrodes

Analytical Chemistry
Sutida JansodEric Bakker

Abstract

We present here a general strategy to translate potential change at a potentiometric probe into a tunable color readout. It is achieved with a closed bipolar electrode where the ion-selective component is confined to one end of the electrode while color is generated at the opposite pole, allowing one to physically separate the detection compartment from the sample. An electrical potential is imposed across the bipolar electrode by solution contact such that the potentiometric signal change at the sample side modulates the potential at the detection side. This triggers the turnover of a redox indicator in the thin detection layer until a new equilibrium state is established. The approach is demonstrated in separate experiments with a chloride responsive Ag/AgCl element and a liquid membrane based calcium-selective membrane electrode, using the redox indicator ferroin in the detection compartment. The principle can be readily extended to other ion detection materials and optical readout principles.

References

Feb 20, 2002·Chemical Reviews·Eric BakkerErnö Pretsch
Jun 18, 2009·Journal of the American Chemical Society·Kwok-Fan ChowRichard M Crooks
Dec 20, 2011·Journal of the American Chemical Society·Gastón A CrespoEric Bakker
Jul 12, 2014·Annual Review of Analytical Chemistry·Günter MistlbergerEric Bakker
Nov 12, 2014·Journal of the American Chemical Society·Xiaojiang XieEric Bakker
Mar 29, 2016·Analytical Chemistry·Ulriika VanamoJohan Bobacka
Apr 7, 2016·Annual Review of Analytical Chemistry·Josephine C CunninghamRichard M Crooks
Sep 26, 2017·Journal of the American Chemical Society·Sheryl RobertsGil G Westmeyer

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Citations

Nov 15, 2018·Luminescence : the Journal of Biological and Chemical Luminescence·Yanying WangHanbing Rao
Mar 7, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Bhavana GuptaAlexander Kuhn
Mar 7, 2020·Chemical Communications : Chem Comm·Xu HunWei Qin
Oct 20, 2018·Analytical Chemistry·Elena Zdrachek, Eric Bakker
Mar 6, 2019·Analytical Chemistry·Wenyue GaoEric Bakker
Feb 24, 2021·Analytical Chemistry·Sutida Jansod, Eric Bakker
Apr 25, 2019·Accounts of Chemical Research·Elena Zdrachek, Eric Bakker
Nov 16, 2019·Analytical Chemistry·Ewa JaworskaKrzysztof Maksymiuk
Jun 20, 2020·Analytical Chemistry·Serena ArnaboldiAlexander Kuhn
Nov 21, 2019·ACS Sensors·Yoshiki Soda, Eric Bakker
Dec 24, 2021·ACS Measurement Science Au·Serena ArnaboldiAlexander Kuhn

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