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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Auteurs principaux:	S. Halevy, Y. Bochlin, Y. Kadosh, A. Kaplan, H. Avraham, A. Nissim, R. Ben Hamo, T. Ohaion-Raz, E. Korin, A. Bettelheim
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2017
Sujets:	Medicine R Science Q
Accès en ligne:	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
work_keys_str_mv	AT shalevy grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT ybochlin grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT ykadosh grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT akaplan grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT havraham grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT anissim grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT rbenhamo grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT tohaionraz grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT ekorin grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization AT abettelheim grapheneoxidesheetscombineintoconductivecoatingsbydirectoxidativeelectropolymerization
_version_	1718394418710446080

Graphene Oxide Sheets Combine into Conductive Coatings by Direct Oxidative Electropolymerization

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