Effect of structural anisotropy on electrical and magnetic properties of polyaniline conducting films

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorFedorko, P.
dc.creatorFaure-Vincent, J.
dc.creatorFier, I.
dc.creatorWalmsley, L.
dc.creatorSniechowski, M.
dc.creatorJacquot, J. F.
dc.creatorPron, A.
dc.creatorTravers, J. P.
dc.creatorDjurado, D.
dc.date2014-05-27T11:28:40Z
dc.date2016-10-25T18:45:34Z
dc.date2014-05-27T11:28:40Z
dc.date2016-10-25T18:45:34Z
dc.date2013-03-12
dc.date.accessioned2017-04-06T02:16:38Z
dc.date.available2017-04-06T02:16:38Z
dc.identifierSynthetic Metals, v. 166, n. 1, p. 63-69, 2013.
dc.identifier0379-6779
dc.identifierhttp://hdl.handle.net/11449/74823
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74823
dc.identifier10.1016/j.synthmet.2013.01.017
dc.identifierWOS:000317453800010
dc.identifier2-s2.0-84874671572
dc.identifierhttp://dx.doi.org/10.1016/j.synthmet.2013.01.017
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895583
dc.descriptionIt is shown that highly conducting films of polyaniline protonated with di-esters of sulfosuccinic and sulfophthalic acids which contain alkyl- or alkoxy-type substituents exhibit highly anisotropic structural, electrical and magnetic properties. The layered-like structure of these films can be described as consisting of polyaniline chains which are mainly oriented parallel to the plane of the film and form regular out-of-plane stacks. These stacks are separated by bilayers of the dopant anions. Accordingly, the main anisotropy observed for solution cast films implies in-plane and out-of-plane measurements. An electrical anisotropy of about 80 is found for the in-plane and out-of-plane electronic conductivities at 5 K. The temperature dependences of the in-plane and out-of-plane conductivities are qualitatively similar and have been fitted as a series combination of variable-range-hopping-type and power law contributions. A maximum is observed in the temperature dependence of the electrical anisotropy at low temperature. The films also show a clear anisotropy of magnetization whose temperature and field characteristics depend on the chemical structure of the dopant anion. © 2013 Elsevier B.V.
dc.languageeng
dc.relationSynthetic Metals
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectAnisotropy
dc.subjectConductivity
dc.subjectMagnetic properties
dc.subjectPolyaniline
dc.subjectStructure
dc.subjectBi-layer
dc.subjectElectrical and magnetic property
dc.subjectElectrical anisotropy
dc.subjectElectronic conductivity
dc.subjectLow temperatures
dc.subjectOut-of-plane
dc.subjectPolyaniline chains
dc.subjectPower-law contribution
dc.subjectProtonated
dc.subjectSolution-cast films
dc.subjectStructural anisotropy
dc.subjectTemperature dependence
dc.subjectElectric conductivity
dc.subjectNegative ions
dc.subjectStructure (composition)
dc.subjectTemperature distribution
dc.subjectConductive films
dc.titleEffect of structural anisotropy on electrical and magnetic properties of polyaniline conducting films
dc.typeOtro


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