UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS

ABSTRACT In this work, the synthesis of poly(aniline-co–o-methoxyaniline) is performed using purely electrochemical techniques, coupled to UV-vis spectroscopy in situ, in 3D. The electrocopolymerization is carried out on ITO electrodes, in various monomer ratios aniline/o-methoxyaniline va...

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Autores principales:	Valle,M. A. Del, Motheo,A., Ramírez,A. M. R.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2019
Materias:	Electropolymerization spectro-electrochemical polyaniline poly-o-methoxyaniline, poly(aniline-co-o-methoxyaniline)
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304553
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spelling	oai:scielo:S0717-970720190003045532019-11-06UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERSValle,M. A. DelMotheo,A.Ramírez,A. M. R. Electropolymerization spectro-electrochemical polyaniline poly-o-methoxyaniline, poly(aniline-co-o-methoxyaniline) ABSTRACT In this work, the synthesis of poly(aniline-co–o-methoxyaniline) is performed using purely electrochemical techniques, coupled to UV-vis spectroscopy in situ, in 3D. The electrocopolymerization is carried out on ITO electrodes, in various monomer ratios aniline/o-methoxyaniline varying between 0.1 to 0.4 mol L−1 in H2SO4 1.0 mol L−1. The homo- and copolymers were characterized by cyclic voltammetry, in situ UV-Visible, and scanning electron microscopy. The results show the important information provided by UV-Visible spectroscopy coupled with electrochemical techniques. Thus, it is observed that the reactivity that gives the o-methoxy group in the aniline ring, damages the conductivity of the polymer, due to the occlusion of oligomers of N-phenyl-1,4-benzoquinonediimine and/or with the structure of oxazine. On the other hand, the SEM images show morphological changes associated with the progress of the synthesis, which can be related with the less conductivity produced by o-methoxy, despite the greater reactivity.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.64 n.3 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304553en10.4067/S0717-97072019000304553
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Electropolymerization spectro-electrochemical polyaniline poly-o-methoxyaniline, poly(aniline-co-o-methoxyaniline)
spellingShingle	Electropolymerization spectro-electrochemical polyaniline poly-o-methoxyaniline, poly(aniline-co-o-methoxyaniline) Valle,M. A. Del Motheo,A. Ramírez,A. M. R. UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS
description	ABSTRACT In this work, the synthesis of poly(aniline-co–o-methoxyaniline) is performed using purely electrochemical techniques, coupled to UV-vis spectroscopy in situ, in 3D. The electrocopolymerization is carried out on ITO electrodes, in various monomer ratios aniline/o-methoxyaniline varying between 0.1 to 0.4 mol L−1 in H2SO4 1.0 mol L−1. The homo- and copolymers were characterized by cyclic voltammetry, in situ UV-Visible, and scanning electron microscopy. The results show the important information provided by UV-Visible spectroscopy coupled with electrochemical techniques. Thus, it is observed that the reactivity that gives the o-methoxy group in the aniline ring, damages the conductivity of the polymer, due to the occlusion of oligomers of N-phenyl-1,4-benzoquinonediimine and/or with the structure of oxazine. On the other hand, the SEM images show morphological changes associated with the progress of the synthesis, which can be related with the less conductivity produced by o-methoxy, despite the greater reactivity.
author	Valle,M. A. Del Motheo,A. Ramírez,A. M. R.
author_facet	Valle,M. A. Del Motheo,A. Ramírez,A. M. R.
author_sort	Valle,M. A. Del
title	UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS
title_short	UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS
title_full	UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS
title_fullStr	UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS
title_full_unstemmed	UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS
title_sort	uv-vis spectroelectrochemical in situ study during the electrosynthesis of copolymers
publisher	Sociedad Chilena de Química
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072019000304553
work_keys_str_mv	AT vallemadel uvvisspectroelectrochemicalinsitustudyduringtheelectrosynthesisofcopolymers AT motheoa uvvisspectroelectrochemicalinsitustudyduringtheelectrosynthesisofcopolymers AT ramirezamr uvvisspectroelectrochemicalinsitustudyduringtheelectrosynthesisofcopolymers
_version_	1714200940938002432

UV-VIS SPECTROELECTROCHEMICAL IN SITU STUDY DURING THE ELECTROSYNTHESIS OF COPOLYMERS

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