Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization

New coatings are obtained when graphene oxide is further oxidized at moderate anodic potentials (≤~1.3 V vs. Ag/AgCl). Based on a variety of spectroscopic and electrochemical observations, the coatings are attributed to the direct electropolymerization of graphene oxide sheets via oxidation of the p...

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Autores principales: Halevy, S., Bochlin, Y., Kadosh, Y., Kaplan, A., Avraham, H., Nissim, A., Ben Hamo, R., Ohaion-Raz, T., Korin, E., Bettelheim, A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5504004/
https://www.ncbi.nlm.nih.gov/pubmed/28694454
http://dx.doi.org/10.1038/s41598-017-05269-1
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author Halevy, S.
Bochlin, Y.
Kadosh, Y.
Kaplan, A.
Avraham, H.
Nissim, A.
Ben Hamo, R.
Ohaion-Raz, T.
Korin, E.
Bettelheim, A.
author_facet Halevy, S.
Bochlin, Y.
Kadosh, Y.
Kaplan, A.
Avraham, H.
Nissim, A.
Ben Hamo, R.
Ohaion-Raz, T.
Korin, E.
Bettelheim, A.
author_sort Halevy, S.
collection PubMed
description New coatings are obtained when graphene oxide is further oxidized at moderate anodic potentials (≤~1.3 V vs. Ag/AgCl). Based on a variety of spectroscopic and electrochemical observations, the coatings are attributed to the direct electropolymerization of graphene oxide sheets via oxidation of the phenol edge groups on graphene. Depending on the applied potential, ether or carboxylic groups are formed. The coatings obtained via further oxidation are characterized by a lower O/C ratio due to decarboxylation and a higher content of C=C bonds. These bonds extend aromatic conjugation into the combined graphene oxide sheets and are responsible for the highly conductive nature of these coatings.
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spelling pubmed-55040042017-07-12 Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization Halevy, S. Bochlin, Y. Kadosh, Y. Kaplan, A. Avraham, H. Nissim, A. Ben Hamo, R. Ohaion-Raz, T. Korin, E. Bettelheim, A. Sci Rep Article New coatings are obtained when graphene oxide is further oxidized at moderate anodic potentials (≤~1.3 V vs. Ag/AgCl). Based on a variety of spectroscopic and electrochemical observations, the coatings are attributed to the direct electropolymerization of graphene oxide sheets via oxidation of the phenol edge groups on graphene. Depending on the applied potential, ether or carboxylic groups are formed. The coatings obtained via further oxidation are characterized by a lower O/C ratio due to decarboxylation and a higher content of C=C bonds. These bonds extend aromatic conjugation into the combined graphene oxide sheets and are responsible for the highly conductive nature of these coatings. Nature Publishing Group UK 2017-07-10 /pmc/articles/PMC5504004/ /pubmed/28694454 http://dx.doi.org/10.1038/s41598-017-05269-1 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Halevy, S.
Bochlin, Y.
Kadosh, Y.
Kaplan, A.
Avraham, H.
Nissim, A.
Ben Hamo, R.
Ohaion-Raz, T.
Korin, E.
Bettelheim, A.
Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
title Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
title_full Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
title_fullStr Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
title_full_unstemmed Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
title_short Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
title_sort graphene oxide sheets combine into conductive coatings by direct oxidative electropolymerization
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5504004/
https://www.ncbi.nlm.nih.gov/pubmed/28694454
http://dx.doi.org/10.1038/s41598-017-05269-1
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