The role of solvent on the doping of polyaniline with Fe(III) ions


Autoria(s): IZUMI, Celly M. S.; RODRIGUES, Daniel C.; TEMPERINI, Marcia L. A.
Contribuinte(s)

UNIVERSIDADE DE SÃO PAULO

Data(s)

20/10/2012

20/10/2012

2010

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

http://dx.doi.org/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