Voltammetric, chronoamperometric and chronoabsorptometric studies of the nucleation of n-heptyl viologen films on SnO2, silane-modified SnO2 and ion-beam-treated ito-metallized polymer films

Robert Cieslinski, Neal R Armstrong

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Nucleation of the first monolayers of the n-heptyl viologen-bronude or -biphthalate films on SnO2 electrodes was found to be accelerated by the addition of one molecular layer of dimethyldiethoxy (dmde)-silane to the SnO2 surface. Partitioning of the reactantviologen into the non-polar surface layer and lowering of the surface tension against nucleation site growth in the silane layer, may both be responsiblefor the enhanced nucleation rates. Similar acceleration of the nucleation of n-HV+ was found on ion-beam-etched indium-tin oxide-metallized polymer electrodes (MPOTE). A second nucleation site with a much lower; and distinguishable rate of nucleation, was produced on this type of electrode surface. Chronoamperometry and chronoabsorptometry were used to confirm that the nucleation of n-heptyl viologen cation-radical salts follows an instantaneous rather than progressive nucleation mechanism, on any of the surfaces studied.

Original languageEnglish (US)
Pages (from-to)59-73
Number of pages15
JournalJournal of Electroanalytical Chemistry
Volume161
Issue number1
StatePublished - Feb 10 1984

Fingerprint

Viologens
Silanes
Polymer films
Ion beams
Nucleation
Electrodes
Chronoamperometry
Tin oxides
Indium
Surface tension
Cations
Monolayers
Polymers
Salts
Positive ions

ASJC Scopus subject areas

  • Electrochemistry
  • Analytical Chemistry
  • Chemical Engineering(all)

Cite this

@article{6535925bafd84d0da5b5a15b547d52f6,
title = "Voltammetric, chronoamperometric and chronoabsorptometric studies of the nucleation of n-heptyl viologen films on SnO2, silane-modified SnO2 and ion-beam-treated ito-metallized polymer films",
abstract = "Nucleation of the first monolayers of the n-heptyl viologen-bronude or -biphthalate films on SnO2 electrodes was found to be accelerated by the addition of one molecular layer of dimethyldiethoxy (dmde)-silane to the SnO2 surface. Partitioning of the reactantviologen into the non-polar surface layer and lowering of the surface tension against nucleation site growth in the silane layer, may both be responsiblefor the enhanced nucleation rates. Similar acceleration of the nucleation of n-HV+ was found on ion-beam-etched indium-tin oxide-metallized polymer electrodes (MPOTE). A second nucleation site with a much lower; and distinguishable rate of nucleation, was produced on this type of electrode surface. Chronoamperometry and chronoabsorptometry were used to confirm that the nucleation of n-heptyl viologen cation-radical salts follows an instantaneous rather than progressive nucleation mechanism, on any of the surfaces studied.",
author = "Robert Cieslinski and Armstrong, {Neal R}",
year = "1984",
month = "2",
day = "10",
language = "English (US)",
volume = "161",
pages = "59--73",
journal = "Journal of Electroanalytical Chemistry",
issn = "0022-0728",
publisher = "Elsevier Sequoia",
number = "1",

}

TY - JOUR

T1 - Voltammetric, chronoamperometric and chronoabsorptometric studies of the nucleation of n-heptyl viologen films on SnO2, silane-modified SnO2 and ion-beam-treated ito-metallized polymer films

AU - Cieslinski, Robert

AU - Armstrong, Neal R

PY - 1984/2/10

Y1 - 1984/2/10

N2 - Nucleation of the first monolayers of the n-heptyl viologen-bronude or -biphthalate films on SnO2 electrodes was found to be accelerated by the addition of one molecular layer of dimethyldiethoxy (dmde)-silane to the SnO2 surface. Partitioning of the reactantviologen into the non-polar surface layer and lowering of the surface tension against nucleation site growth in the silane layer, may both be responsiblefor the enhanced nucleation rates. Similar acceleration of the nucleation of n-HV+ was found on ion-beam-etched indium-tin oxide-metallized polymer electrodes (MPOTE). A second nucleation site with a much lower; and distinguishable rate of nucleation, was produced on this type of electrode surface. Chronoamperometry and chronoabsorptometry were used to confirm that the nucleation of n-heptyl viologen cation-radical salts follows an instantaneous rather than progressive nucleation mechanism, on any of the surfaces studied.

AB - Nucleation of the first monolayers of the n-heptyl viologen-bronude or -biphthalate films on SnO2 electrodes was found to be accelerated by the addition of one molecular layer of dimethyldiethoxy (dmde)-silane to the SnO2 surface. Partitioning of the reactantviologen into the non-polar surface layer and lowering of the surface tension against nucleation site growth in the silane layer, may both be responsiblefor the enhanced nucleation rates. Similar acceleration of the nucleation of n-HV+ was found on ion-beam-etched indium-tin oxide-metallized polymer electrodes (MPOTE). A second nucleation site with a much lower; and distinguishable rate of nucleation, was produced on this type of electrode surface. Chronoamperometry and chronoabsorptometry were used to confirm that the nucleation of n-heptyl viologen cation-radical salts follows an instantaneous rather than progressive nucleation mechanism, on any of the surfaces studied.

UR - http://www.scopus.com/inward/record.url?scp=0021376232&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0021376232&partnerID=8YFLogxK

M3 - Article

VL - 161

SP - 59

EP - 73

JO - Journal of Electroanalytical Chemistry

JF - Journal of Electroanalytical Chemistry

SN - 0022-0728

IS - 1

ER -