VOLTAMMETRIC AND ELECTROCHROMIC BEHAVIOR OF N-HEPTYLVIOLOGEN ON CHEMICALLY MODIFIED METAL OXIDE ELECTRODES.

R. C. Cieslinski, Neal R Armstrong

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Voltammetric and spectroelectrochemical results are presented for the one-electron reduction of n-heptylviologen dibromide on clean and silane-modified, tin oxide, and on indium tin oxide metallized-plastic optically transparent electrodes (MPOTE). The amount of n-heptyviologen dibromide reduced and the rate of coloration due to the formation of the cation-radical film can strongly be influenced by the state of the electrode surface. The initial 200-500 msec of viologen deposition are not mass transport controlled. Calculations for the amount of viologen deposited vary, depending on whether a spectrophotometric or coulometric estimated is used. Spectrophotometric data indicate that the amount of viologen deposited in the first 200 msec of chronoamperometric reduction from a concentrated viologen solution is ca. 10-14 monolayers and is increased at least 60% by the addition of a monolayer of the silane modifier to the electrode surface.

Original languageEnglish (US)
Pages (from-to)2605-2610
Number of pages6
JournalJournal of the Electrochemical Society
Volume127
Issue number12
StatePublished - Dec 1980

Fingerprint

Viologens
Oxides
metal oxides
dibromides
Metals
Tin oxides
Silanes
silanes
tin oxides
Electrodes
electrodes
Monolayers
indium oxides
Indium
plastics
Mass transfer
Positive ions
Plastics
color
Cations

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

VOLTAMMETRIC AND ELECTROCHROMIC BEHAVIOR OF N-HEPTYLVIOLOGEN ON CHEMICALLY MODIFIED METAL OXIDE ELECTRODES. / Cieslinski, R. C.; Armstrong, Neal R.

In: Journal of the Electrochemical Society, Vol. 127, No. 12, 12.1980, p. 2605-2610.

Research output: Contribution to journalArticle

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N2 - Voltammetric and spectroelectrochemical results are presented for the one-electron reduction of n-heptylviologen dibromide on clean and silane-modified, tin oxide, and on indium tin oxide metallized-plastic optically transparent electrodes (MPOTE). The amount of n-heptyviologen dibromide reduced and the rate of coloration due to the formation of the cation-radical film can strongly be influenced by the state of the electrode surface. The initial 200-500 msec of viologen deposition are not mass transport controlled. Calculations for the amount of viologen deposited vary, depending on whether a spectrophotometric or coulometric estimated is used. Spectrophotometric data indicate that the amount of viologen deposited in the first 200 msec of chronoamperometric reduction from a concentrated viologen solution is ca. 10-14 monolayers and is increased at least 60% by the addition of a monolayer of the silane modifier to the electrode surface.

AB - Voltammetric and spectroelectrochemical results are presented for the one-electron reduction of n-heptylviologen dibromide on clean and silane-modified, tin oxide, and on indium tin oxide metallized-plastic optically transparent electrodes (MPOTE). The amount of n-heptyviologen dibromide reduced and the rate of coloration due to the formation of the cation-radical film can strongly be influenced by the state of the electrode surface. The initial 200-500 msec of viologen deposition are not mass transport controlled. Calculations for the amount of viologen deposited vary, depending on whether a spectrophotometric or coulometric estimated is used. Spectrophotometric data indicate that the amount of viologen deposited in the first 200 msec of chronoamperometric reduction from a concentrated viologen solution is ca. 10-14 monolayers and is increased at least 60% by the addition of a monolayer of the silane modifier to the electrode surface.

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