Effects of polymer thickness on the potentiometric pH responses of polypyrrole modified glassy carbon electrodes

Kwok-Keung Shiu; Fa-Yi Song; Kam-Wing Lau

doi:10.1016/S0022-0728(99)00372-1

Effects of polymer thickness on the potentiometric pH responses of polypyrrole modified glassy carbon electrodes

Kwok-Keung Shiu^*, Fa-Yi Song, Kam-Wing Lau

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

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Abstract

The potentiometric pH response of electropolymerized polypyrrole modified glassy carbon electrodes as a function of polymer film thickness was examined. Electrodes coated with thicker polypyrrole films showed mixed potentiometric responses toward both cationic and anionic species, while thinner polypyrrole films (<2 μm) showed good linear response to pH changes for the pH range between 2 and 12. The possible mechanism for such behavior was discussed.

Original language	English
Pages (from-to)	109-117
Number of pages	9
Journal	Journal of Electroanalytical Chemistry
Volume	476
Issue number	2
DOIs	https://doi.org/10.1016/S0022-0728(99)00372-1
Publication status	Published - 1 Nov 1999

Scopus Subject Areas

Analytical Chemistry
Chemical Engineering(all)
Electrochemistry

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title = "Effects of polymer thickness on the potentiometric pH responses of polypyrrole modified glassy carbon electrodes",

abstract = "The potentiometric pH response of electropolymerized polypyrrole modified glassy carbon electrodes as a function of polymer film thickness was examined. Electrodes coated with thicker polypyrrole films showed mixed potentiometric responses toward both cationic and anionic species, while thinner polypyrrole films (<2 μm) showed good linear response to pH changes for the pH range between 2 and 12. The possible mechanism for such behavior was discussed.",

author = "Kwok-Keung Shiu and Fa-Yi Song and Kam-Wing Lau",

note = "Funding Information: This work was partially supported by the Research Grants Council of Hong Kong (HKBC129/94) and the Faculty Research Grant of HKBU (FRG/93-94/II-09). ",

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AU - Shiu, Kwok-Keung

AU - Song, Fa-Yi

AU - Lau, Kam-Wing

N1 - Funding Information: This work was partially supported by the Research Grants Council of Hong Kong (HKBC129/94) and the Faculty Research Grant of HKBU (FRG/93-94/II-09).

PY - 1999/11/1

Y1 - 1999/11/1

N2 - The potentiometric pH response of electropolymerized polypyrrole modified glassy carbon electrodes as a function of polymer film thickness was examined. Electrodes coated with thicker polypyrrole films showed mixed potentiometric responses toward both cationic and anionic species, while thinner polypyrrole films (<2 μm) showed good linear response to pH changes for the pH range between 2 and 12. The possible mechanism for such behavior was discussed.

AB - The potentiometric pH response of electropolymerized polypyrrole modified glassy carbon electrodes as a function of polymer film thickness was examined. Electrodes coated with thicker polypyrrole films showed mixed potentiometric responses toward both cationic and anionic species, while thinner polypyrrole films (<2 μm) showed good linear response to pH changes for the pH range between 2 and 12. The possible mechanism for such behavior was discussed.

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U2 - 10.1016/S0022-0728(99)00372-1

DO - 10.1016/S0022-0728(99)00372-1

M3 - Journal article

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JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

IS - 2

ER -

Effects of polymer thickness on the potentiometric pH responses of polypyrrole modified glassy carbon electrodes

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