The role of solvent on the doping of polyaniline with Fe(III) ions
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
20/10/2012
20/10/2012
2010
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Resumo |
The products formed from the reaction of emeraldine base polyaniline (EB-PANI) with Fe(III) ions in N-methyl-pyrrolidone (NMP), dimethylacetamide (DMA), dimethylformamide (DMF) and m-cresol media have been investigated using UV-VIS-NIR and resonance Raman (lambda(0) = 632.8 and 1064 nm) spectroscopies. Through these results it was verified that the different PANI forms in solution can be formed by the suitable choice of the solvent. The behavior of Fe(III)/EB-PANI in different solvents was rationalized in terms of the interactions among Fe(III) ions, EB-PANI and solvent. In basic NMP, DMA and DMF media, the reaction of Fe(III) with EB-PANI yields EB-PANI doping giving ES-PANI and/or the EB-PANI oxidation to PB-PANI. The formation of ES-PANI is favored in DMF while PB-PANI is formed in a greater extension in NMP and DMA. In acidic m-cresol, only ES-PANI is produced in Fe(III)/EB-PANI solutions indicating the important role played by the solvent in the nature of the product. (C) 2010 Elsevier B.V. All rights reserved. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) FAPESP CNPq Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) |
Identificador |
SYNTHETIC METALS, v.160, n.23-24, p.2552-2558, 2010 0379-6779 http://producao.usp.br/handle/BDPI/31437 10.1016/j.synthmet.2010.10.004 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE SA |
Relação |
Synthetic Metals |
Direitos |
restrictedAccess Copyright ELSEVIER SCIENCE SA |
Palavras-Chave | #Polyaniline #Resonance Raman #Doping #Iron #Conducting polymer #TRANSITION-METAL SALTS #ACID DOPED POLYANILINE #SPECTROSCOPIC CHARACTERIZATION #EMERALDINE BASE #VIBRATIONAL ANALYSIS #CONDUCTING POLYMERS #MODEL-COMPOUND #CAST FILMS #OXIDATION #COPPER(II) #Materials Science, Multidisciplinary #Physics, Condensed Matter #Polymer Science |
Tipo |
article original article publishedVersion |