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Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing

[Image: see text] Nanometer-thin coatings of polyhydroquinone (PHQ), which release and absorb protons upon oxidation and reduction, respectively, were tested for electrochemically induced anti-biofouling activity under the hypothesis that a dynamic pH environment would discourage fouling. Antifoulin...

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Autores principales: Larsson, Mikael, Yousefi, Ali, Elmas, Sait, Lindén, Johan B., Nann, Thomas, Nydén, Magnus
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641732/
https://www.ncbi.nlm.nih.gov/pubmed/31457758
http://dx.doi.org/10.1021/acsomega.7b00485
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author Larsson, Mikael
Yousefi, Ali
Elmas, Sait
Lindén, Johan B.
Nann, Thomas
Nydén, Magnus
author_facet Larsson, Mikael
Yousefi, Ali
Elmas, Sait
Lindén, Johan B.
Nann, Thomas
Nydén, Magnus
author_sort Larsson, Mikael
collection PubMed
description [Image: see text] Nanometer-thin coatings of polyhydroquinone (PHQ), which release and absorb protons upon oxidation and reduction, respectively, were tested for electrochemically induced anti-biofouling activity under the hypothesis that a dynamic pH environment would discourage fouling. Antifouling tests in artificial seawater using the marine, biofilm-forming bacterium Vibrio alginolyticus proved the coatings to be ineffective in fouling prevention but revealed a deceiving artifact from the reactive species generated at the counter electrode (CE), even for electrochemical bias potentials as low as |400| mV versus Ag|AgCl. These findings provide valuable information on the preparation of nanothin PHQ coatings and their electrochemical behavior in artificial seawater. The results further demonstrate that it is critical to isolate the CE in electrochemical anti-biofouling testing.
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spelling pubmed-66417322019-08-27 Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing Larsson, Mikael Yousefi, Ali Elmas, Sait Lindén, Johan B. Nann, Thomas Nydén, Magnus ACS Omega [Image: see text] Nanometer-thin coatings of polyhydroquinone (PHQ), which release and absorb protons upon oxidation and reduction, respectively, were tested for electrochemically induced anti-biofouling activity under the hypothesis that a dynamic pH environment would discourage fouling. Antifouling tests in artificial seawater using the marine, biofilm-forming bacterium Vibrio alginolyticus proved the coatings to be ineffective in fouling prevention but revealed a deceiving artifact from the reactive species generated at the counter electrode (CE), even for electrochemical bias potentials as low as |400| mV versus Ag|AgCl. These findings provide valuable information on the preparation of nanothin PHQ coatings and their electrochemical behavior in artificial seawater. The results further demonstrate that it is critical to isolate the CE in electrochemical anti-biofouling testing. American Chemical Society 2017-08-21 /pmc/articles/PMC6641732/ /pubmed/31457758 http://dx.doi.org/10.1021/acsomega.7b00485 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Larsson, Mikael
Yousefi, Ali
Elmas, Sait
Lindén, Johan B.
Nann, Thomas
Nydén, Magnus
Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing
title Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing
title_full Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing
title_fullStr Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing
title_full_unstemmed Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing
title_short Electroactive Polyhydroquinone Coatings for Marine Fouling Prevention—A Rejected Dynamic pH Hypothesis and a Deceiving Artifact in Electrochemical Antifouling Testing
title_sort electroactive polyhydroquinone coatings for marine fouling prevention—a rejected dynamic ph hypothesis and a deceiving artifact in electrochemical antifouling testing
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641732/
https://www.ncbi.nlm.nih.gov/pubmed/31457758
http://dx.doi.org/10.1021/acsomega.7b00485
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