Electrochromic self-electrostabilized polypyrrole films doped with surfactant and Azo Dye
Bayat, Maryam (Isfahan University of Technology. Department of Textile Engineering)
Izadan, Hossein (Isfahan University of Technology. Department of Textile Engineering)
Molina García, Brenda Guadalupe (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química)
Sánchez Jiménez, Margarita (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química)
Santiago, Sara (Universitat Autònoma de Barcelona. Departament de Química)
Semnani, Dariush (Isfahan University of Technology. Department of Textile Engineering)
Dinari, Mohammad (Isfahan University of Technology. Department of Chemistry)
Guirado, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química)
Estrany, Francesc (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química)
Alemán, Carlos (Barcelona Research Center for Multiscale Science and Engineering)

Date:	2019
Abstract:	Two azo dyes, acid red 1 (AR1) and acid red 18 (AR18), were used alone or in combination with sodium dodecyl sulfate (SDS) for the electropolymerization of a pyrrole monomer. Polypyrrole (PPy) showed higher redox capacity when SDS and AR18 were used simultaneously as dopant agents (PPy/AR18-SDS) than when the conducting polymer was produced in the presence of SDS, AR18, AR1, or an AR1/SDS mixture. Moreover, PPy/AR18-SDS is a self-stabilizing material that exhibits increasing electrochemical activity with the number of oxidation-reduction cycles. A mechanism supported by scanning electron microscopy and X-ray diffraction structural observations was proposed to explain the synergy between the SDS surfactant and the AR18 dye. On the other hand, the Bordeaux red color of PPy/AR18-SDS, which exhibits an optical band gap of 1. 9 eV, rapidly changed to orange-yellow and blue colors when films were reduced and oxidized, respectively, by applying linear or step potential ramps. Overall, the results indicate that the synergistic utilization of AR18 and SDS as dopant agents in the same polymerization reaction is a very successful and advantageous strategy for the preparation of PPy films with cutting-edge electrochemical and electrochromic properties.
Grants:	Agencia Estatal de Investigación RTI2018-098951-B-I00 Ministerio de Economía y Competitividad CTQ2015-65439-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-359
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Conducting polymer ; Electrochromic properties ; Optoelectronics ; Sodium dodecyl sulfate ; Spectroelectrochemistry
Published in:	Polymers, Vol. 11, issue 11 (Nov. 2019) , art. 1757, ISSN 2073-4360

DOI: 10.3390/polym11111757
PMID: 31731560

18 p, 2.6 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group in Electrochemistry, Photochemistry and Organic Reactivity (GEFRO)
Articles > Research articles
Articles > Published articles