Electropolymerization of Azure A and pH Sensing Using Poly(azure A)-modified Electrodes

被引：0
|
作者：
Kyoko Sugiyama
Kazuhiro Watanabe
Sachiko Komatsu
Kentaro Yoshida
Tetsuya Ono
Tsutomu Fujimura
Yoshitomo Kashiwagi
Katsuhiko Sato
机构：
[1] Tohoku Medical and Pharmaceutical University,Faculty of Pharmaceutical Science
[2] Ohu University,School of Pharmaceutical Sciences
[3] National Institute of Technology,Department of Creative Engineering
[4] Tsuruoka College,undefined
来源：
Analytical Sciences | 2021年 / 37卷
关键词：
pH sensor; electropolymerization; azure A; methylene blue;
D O I：
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学科分类号：
摘要：
A modified electrode was developed by immobilizing poly(azure A) (pAA) onto the surface of a glassy carbon electrode via the electropolymerization of azure A (AA). The pAA immobilized on the electrode exhibited redox response during cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The redox reaction obeyed the Nernst equation because of the involvement of H+ ions. In addition, the peak potential was shifted according to the solution pH. The shifts of the oxidation peak potential could be more easily observed using DPV than when using CV, indicating that the developed electrode could be useful as a pH sensor. This pH measurement method can be successfully applied in the pH range of 1 to 10 and can be successfully repeated more than 50 times.
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页码：893 / 896
页数：3
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