Measurement of lateral charge propagation in polyaniline layers with the scanning electrochemical microscope

Daniel Mandler; Patrick R. Unwin

doi:10.1021/jp021623x

Measurement of lateral charge propagation in polyaniline layers with the scanning electrochemical microscope

Daniel Mandler^*, Patrick R. Unwin

^*Corresponding author for this work

Institute of Chemistry

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

67 Scopus citations

Abstract

The local injection and lateral propagation of charge in ultrathin polyaniline (PAN) layers have been studied with the scanning electrochemical microscope (SECM). Monolayers of PAN were deposited on a glass substrate using the LB method and were chemically reduced using sodium dithionite. A microelectrode held close to the PAN layer was used to generate a flux of an oxidant, i.e., Fe(phen)₃^3- (phen = 1,10-phenanthroline) which diffused to the surface and locally oxidized the reduced PAN. By simulating the current-time transients, the kinetics of lateral charge propagation have been evaluated.

Original language	English
Pages (from-to)	407-410
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	107
Issue number	2
DOIs	https://doi.org/10.1021/jp021623x
State	Published - 16 Jan 2003

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abstract = "The local injection and lateral propagation of charge in ultrathin polyaniline (PAN) layers have been studied with the scanning electrochemical microscope (SECM). Monolayers of PAN were deposited on a glass substrate using the LB method and were chemically reduced using sodium dithionite. A microelectrode held close to the PAN layer was used to generate a flux of an oxidant, i.e., Fe(phen)33- (phen = 1,10-phenanthroline) which diffused to the surface and locally oxidized the reduced PAN. By simulating the current-time transients, the kinetics of lateral charge propagation have been evaluated.",

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AB - The local injection and lateral propagation of charge in ultrathin polyaniline (PAN) layers have been studied with the scanning electrochemical microscope (SECM). Monolayers of PAN were deposited on a glass substrate using the LB method and were chemically reduced using sodium dithionite. A microelectrode held close to the PAN layer was used to generate a flux of an oxidant, i.e., Fe(phen)33- (phen = 1,10-phenanthroline) which diffused to the surface and locally oxidized the reduced PAN. By simulating the current-time transients, the kinetics of lateral charge propagation have been evaluated.

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Measurement of lateral charge propagation in polyaniline layers with the scanning electrochemical microscope

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