Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization

Abstract 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...

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Autores principales: S. Halevy, Y. Bochlin, Y. Kadosh, A. Kaplan, H. Avraham, A. Nissim, R. Ben Hamo, T. Ohaion-Raz, E. Korin, A. Bettelheim
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Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/b4b8a85c6340461e8a473f9d72c41d7f
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spelling oai:doaj.org-article:b4b8a85c6340461e8a473f9d72c41d7f2021-12-02T12:30:18ZGraphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization10.1038/s41598-017-05269-12045-2322https://doaj.org/article/b4b8a85c6340461e8a473f9d72c41d7f2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05269-1https://doaj.org/toc/2045-2322Abstract 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.S. HalevyY. BochlinY. KadoshA. KaplanH. AvrahamA. NissimR. Ben HamoT. Ohaion-RazE. KorinA. BettelheimNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
S. Halevy
Y. Bochlin
Y. Kadosh
A. Kaplan
H. Avraham
A. Nissim
R. Ben Hamo
T. Ohaion-Raz
E. Korin
A. Bettelheim
Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization
description Abstract 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.
format article
author S. Halevy
Y. Bochlin
Y. Kadosh
A. Kaplan
H. Avraham
A. Nissim
R. Ben Hamo
T. Ohaion-Raz
E. Korin
A. Bettelheim
author_facet S. Halevy
Y. Bochlin
Y. Kadosh
A. Kaplan
H. Avraham
A. Nissim
R. Ben Hamo
T. Ohaion-Raz
E. Korin
A. Bettelheim
author_sort S. Halevy
title 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_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_sort graphene oxide sheets combine into conductive coatings by direct oxidative electropolymerization
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/b4b8a85c6340461e8a473f9d72c41d7f
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