Application of electroinactive polypyrrole film to the pH sensor electrode

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

Research output: Contribution to journalArticle

35 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 languageEnglish
Pages (from-to)205-208
Number of pages4
JournalSensors and Actuators: B. Chemical
Volume13
Issue number1-3
DOIs
Publication statusPublished - 1993

Fingerprint

pH sensors
polypyrroles
Polypyrroles
Amperometric sensors
Electrodes
electrodes
sensors
MIM devices
Ion selective membranes
insulators
metals
plots
membranes
gradients
polypyrrole
Electric potential
electric potential
ions

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

Cite this

Application of electroinactive polypyrrole film to the pH sensor electrode. / Osaka, Tetsuya; Fukuda, Toshihiro; Kanagawa, Himeko; Momma, Toshiyuki; Yamauchi, Shigeru.

In: Sensors and Actuators: B. Chemical, Vol. 13, No. 1-3, 1993, p. 205-208.

Research output: Contribution to journalArticle

Osaka, Tetsuya ; Fukuda, Toshihiro ; Kanagawa, Himeko ; Momma, Toshiyuki ; Yamauchi, Shigeru. / Application of electroinactive polypyrrole film to the pH sensor electrode. In: Sensors and Actuators: B. Chemical. 1993 ; Vol. 13, No. 1-3. pp. 205-208.
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