Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials
Hybrid materials based on polyaniline (PAni) were obtained by in situ polymerization of aniline with chitosan and/or organically modified clay (nanomer I-24) in HCl. The samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and direct current (DC) electrical conductivity. Thin films of PAni, PAni-clay, PAni-chitosan and PAni-chitosan-clay were prepared by casting a solution of each sample in N-methyl-2-pyrrolidone (NMP) onto indium tin oxide (ITO)/glass electrodes and their electrochromic properties were investigated. It was observed color variation from transparent yellow in the reduced state (E = -0.2 V vs. Ag/AgCl), green in the intermediate state (E = 0.5 V) and dark blue in the oxidized state (E = 0.8 V) for all samples. The color changes of each material in function of the applied potential were tracked using the Commission Internationale de l'Eclairage (CIE) system of colorimetry, in which the color change was much more significant for PAni-clay film.
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Sociedade Brasileira de Química
2016
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oai:scielo:S0103-505320160010018472016-10-04Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic MaterialsSilva,Rosanny C.Sarmento,Marina V.Faez,RoselenaMortimer,Roger J.Ribeiro,Adriana S. conjugated polymer hybrid material polyaniline chitosan organophilic clay Hybrid materials based on polyaniline (PAni) were obtained by in situ polymerization of aniline with chitosan and/or organically modified clay (nanomer I-24) in HCl. The samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and direct current (DC) electrical conductivity. Thin films of PAni, PAni-clay, PAni-chitosan and PAni-chitosan-clay were prepared by casting a solution of each sample in N-methyl-2-pyrrolidone (NMP) onto indium tin oxide (ITO)/glass electrodes and their electrochromic properties were investigated. It was observed color variation from transparent yellow in the reduced state (E = -0.2 V vs. Ag/AgCl), green in the intermediate state (E = 0.5 V) and dark blue in the oxidized state (E = 0.8 V) for all samples. The color changes of each material in function of the applied potential were tracked using the Commission Internationale de l'Eclairage (CIE) system of colorimetry, in which the color change was much more significant for PAni-clay film.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.27 n.10 20162016-10-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016001001847en10.5935/0103-5053.20160068 |
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Silva,Rosanny C. Sarmento,Marina V. Faez,Roselena Mortimer,Roger J. Ribeiro,Adriana S. |
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Silva,Rosanny C. Sarmento,Marina V. Faez,Roselena Mortimer,Roger J. Ribeiro,Adriana S. Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials |
author_facet |
Silva,Rosanny C. Sarmento,Marina V. Faez,Roselena Mortimer,Roger J. Ribeiro,Adriana S. |
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Silva,Rosanny C. |
title |
Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials |
title_short |
Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials |
title_full |
Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials |
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Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials |
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Electrochromic Properties of Polyaniline-Based Hybrid Organic/Inorganic Materials |
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electrochromic properties of polyaniline-based hybrid organic/inorganic materials |
description |
Hybrid materials based on polyaniline (PAni) were obtained by in situ polymerization of aniline with chitosan and/or organically modified clay (nanomer I-24) in HCl. The samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and direct current (DC) electrical conductivity. Thin films of PAni, PAni-clay, PAni-chitosan and PAni-chitosan-clay were prepared by casting a solution of each sample in N-methyl-2-pyrrolidone (NMP) onto indium tin oxide (ITO)/glass electrodes and their electrochromic properties were investigated. It was observed color variation from transparent yellow in the reduced state (E = -0.2 V vs. Ag/AgCl), green in the intermediate state (E = 0.5 V) and dark blue in the oxidized state (E = 0.8 V) for all samples. The color changes of each material in function of the applied potential were tracked using the Commission Internationale de l'Eclairage (CIE) system of colorimetry, in which the color change was much more significant for PAni-clay film. |
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Sociedade Brasileira de Química |
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2016 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532016001001847 |
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AT silvarosannyc electrochromicpropertiesofpolyanilinebasedhybridorganicinorganicmaterials AT sarmentomarinav electrochromicpropertiesofpolyanilinebasedhybridorganicinorganicmaterials AT faezroselena electrochromicpropertiesofpolyanilinebasedhybridorganicinorganicmaterials AT mortimerrogerj electrochromicpropertiesofpolyanilinebasedhybridorganicinorganicmaterials AT ribeiroadrianas electrochromicpropertiesofpolyanilinebasedhybridorganicinorganicmaterials |
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