Application of electroinactive polypyrrole film to the pH sensor electrode

Tetsuya Osaka; Toshihiro Fukuda; Himeko Kanagawa; Toshiyuki Momma; Shigeru Yamauchi

doi:10.1016/0925-4005(93)85362-E

Application of electroinactive polypyrrole film to the pH sensor electrode

Tetsuya Osaka^*, Toshihiro Fukuda, Himeko Kanagawa, Toshiyuki Momma, Shigeru Yamauchi

^*Corresponding author for this work

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

34 Citations (Scopus)

Abstract

On the basis of a metal/insulator/metal (MIM) device using electroinactive polypyrrole (PPy) film as an insulator, an amperometric pH sensor device for a very small test solution (4 μl) was developed using the structure of Au/PPy/Au with a window hole. Electropolymerized thin PPy film formed from alkaline solution is used for the ion-selective membrane. The Au/PPy/Au device with a d.c. voltage supply from 0 to 0.2 V works well as an amperometric pH sensor, that is, the gradient of the Cottrell plot within 10 s corresponds exactly to the pH value.

Original language	English
Pages (from-to)	205-208
Number of pages	4
Journal	Sensors and Actuators: B. Chemical
Volume	13
Issue number	1-3
DOIs	https://doi.org/10.1016/0925-4005(93)85362-E
Publication status	Published - 1993 May

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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AU - Yamauchi, Shigeru

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Application of electroinactive polypyrrole film to the pH sensor electrode

Abstract

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