Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode

To explore the effect of the presence of a self-assembled monolayer (SAM) of an alkyl thiol derivative as an underlayer of a Nafion film, redox reaction of methyl viologen (MV) at the Au/SAM/Nafion (1 µm-thick) interface was characterized using the results of the voltammetric and electroreflectance...

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Main Authors: Tatsuya AYABE, Takamasa SAGARA
Format: Article
Language:English
Published: The Electrochemical Society of Japan 2021-03-01
Series:Electrochemistry
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/electrochemistry/89/2/89_20-00132/_pdf/-char/en
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author Tatsuya AYABE
Takamasa SAGARA
author_facet Tatsuya AYABE
Takamasa SAGARA
author_sort Tatsuya AYABE
collection DOAJ
description To explore the effect of the presence of a self-assembled monolayer (SAM) of an alkyl thiol derivative as an underlayer of a Nafion film, redox reaction of methyl viologen (MV) at the Au/SAM/Nafion (1 µm-thick) interface was characterized using the results of the voltammetric and electroreflectance measurements. The perfluorinated SAM slowed the kinetics of the interfacial electron transfer process compared to a Au/Nafion electrode, whereas 1-dodecanethiol SAM accelerated it. However, both the SAMs decreased the voltammetric current by half. Importance of the approach to underlay a SAM was discussed.
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spelling doaj.art-20169c179f074af792c5f79d4fc829c52023-01-02T15:30:36ZengThe Electrochemical Society of JapanElectrochemistry2186-24512021-03-0189213113310.5796/electrochemistry.20-00132electrochemistryEffect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au ElectrodeTatsuya AYABE0Takamasa SAGARA1Department of Advanced Technology and Science for Sustainable Development, Graduate School of Engineering, Nagasaki UniversityDivision of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki UniversityTo explore the effect of the presence of a self-assembled monolayer (SAM) of an alkyl thiol derivative as an underlayer of a Nafion film, redox reaction of methyl viologen (MV) at the Au/SAM/Nafion (1 µm-thick) interface was characterized using the results of the voltammetric and electroreflectance measurements. The perfluorinated SAM slowed the kinetics of the interfacial electron transfer process compared to a Au/Nafion electrode, whereas 1-dodecanethiol SAM accelerated it. However, both the SAMs decreased the voltammetric current by half. Importance of the approach to underlay a SAM was discussed.https://www.jstage.jst.go.jp/article/electrochemistry/89/2/89_20-00132/_pdf/-char/enmethyl viologenself-assembled monolayernafion filmelectroreflectance
spellingShingle Tatsuya AYABE
Takamasa SAGARA
Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode
Electrochemistry
methyl viologen
self-assembled monolayer
nafion film
electroreflectance
title Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode
title_full Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode
title_fullStr Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode
title_full_unstemmed Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode
title_short Effect of an Underlying Monolayer of a Nafion Film upon Redox Reaction of Methyl Viologen on a Au Electrode
title_sort effect of an underlying monolayer of a nafion film upon redox reaction of methyl viologen on a au electrode
topic methyl viologen
self-assembled monolayer
nafion film
electroreflectance
url https://www.jstage.jst.go.jp/article/electrochemistry/89/2/89_20-00132/_pdf/-char/en
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