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Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor

The conductive blend of the poly (3,4-ethylene dioxythiophene) and polystyrene sulfonated acid (PEDOT-PSS) polymers were doped with Methyl Red (MR) dye in the acid form and were used as the basis for a chemiresistor sensor for detection of ethanol vapor. This Au | Polymers-dye blend | Au device was...

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Autores principales: dos Reis, Marcos A. L., Thomazi, Fabiano, Nero, Jordan Del, Roman, Lucimara S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274177/
https://www.ncbi.nlm.nih.gov/pubmed/22319273
http://dx.doi.org/10.3390/s100402812
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author dos Reis, Marcos A. L.
Thomazi, Fabiano
Nero, Jordan Del
Roman, Lucimara S.
author_facet dos Reis, Marcos A. L.
Thomazi, Fabiano
Nero, Jordan Del
Roman, Lucimara S.
author_sort dos Reis, Marcos A. L.
collection PubMed
description The conductive blend of the poly (3,4-ethylene dioxythiophene) and polystyrene sulfonated acid (PEDOT-PSS) polymers were doped with Methyl Red (MR) dye in the acid form and were used as the basis for a chemiresistor sensor for detection of ethanol vapor. This Au | Polymers-dye blend | Au device was manufactured by chemical vapor deposition and spin-coating, the first for deposition of the metal electrodes onto a glass substrate, and the second for preparation of the organic thin film forming ∼1.0 mm(2) of active area. The results obtained are the following: (i) electrical resistance dependence with atmospheres containing ethanol vapor carried by nitrogen gas and humidity; (ii) sensitivity at 1.15 for limit detection of 26.25 ppm analyte and an operating temperature of 25 °C; and (iii) the sensing process is quickly reversible and shows very a low power consumption of 20 μW. The thin film morphology of ∼200 nm thickness was analyzed by Atomic Force Microscopy (AFM), where it was observed to have a peculiarly granulometric surface favorable to adsorption. This work indicates that PEDOT-PSS doped with MR dye to compose blend film shows good performance like resistive sensor.
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spelling pubmed-32741772012-02-08 Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor dos Reis, Marcos A. L. Thomazi, Fabiano Nero, Jordan Del Roman, Lucimara S. Sensors (Basel) Article The conductive blend of the poly (3,4-ethylene dioxythiophene) and polystyrene sulfonated acid (PEDOT-PSS) polymers were doped with Methyl Red (MR) dye in the acid form and were used as the basis for a chemiresistor sensor for detection of ethanol vapor. This Au | Polymers-dye blend | Au device was manufactured by chemical vapor deposition and spin-coating, the first for deposition of the metal electrodes onto a glass substrate, and the second for preparation of the organic thin film forming ∼1.0 mm(2) of active area. The results obtained are the following: (i) electrical resistance dependence with atmospheres containing ethanol vapor carried by nitrogen gas and humidity; (ii) sensitivity at 1.15 for limit detection of 26.25 ppm analyte and an operating temperature of 25 °C; and (iii) the sensing process is quickly reversible and shows very a low power consumption of 20 μW. The thin film morphology of ∼200 nm thickness was analyzed by Atomic Force Microscopy (AFM), where it was observed to have a peculiarly granulometric surface favorable to adsorption. This work indicates that PEDOT-PSS doped with MR dye to compose blend film shows good performance like resistive sensor. Molecular Diversity Preservation International (MDPI) 2010-03-29 /pmc/articles/PMC3274177/ /pubmed/22319273 http://dx.doi.org/10.3390/s100402812 Text en © 2010 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland. This article is an open-access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
dos Reis, Marcos A. L.
Thomazi, Fabiano
Nero, Jordan Del
Roman, Lucimara S.
Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor
title Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor
title_full Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor
title_fullStr Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor
title_full_unstemmed Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor
title_short Development of a Chemiresistor Sensor Based on Polymers-Dye Blend for Detection of Ethanol Vapor
title_sort development of a chemiresistor sensor based on polymers-dye blend for detection of ethanol vapor
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3274177/
https://www.ncbi.nlm.nih.gov/pubmed/22319273
http://dx.doi.org/10.3390/s100402812
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