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

P. Fedorko , J. Faure-Vincent , I. Fier , L. Walmsley , M. Sniechowski , J.F. Jacquot , Adam Proń , J.P. Travers , D. Djurado

Abstract

It 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.
Author P. Fedorko - [Slovak University of Technology in Bratislava]
P. Fedorko,,
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, J. Faure-Vincent - [CEA Grenoble]
J. Faure-Vincent,,
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, I. Fier - [UNESP-Universidade Estadual Paulista]
I. Fier,,
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, L. Walmsley - [UNESP-Universidade Estadual Paulista]
L. Walmsley,,
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, M. Sniechowski - [AGH University of Science and Technology (AGH)]
M. Sniechowski,,
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- Akademia Górniczo-Hutnicza
, J.F. Jacquot - [CEA Grenoble]
J.F. Jacquot,,
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, Adam Proń (FC / CPCT)
Adam Proń,,
- Chair Of Polymer Chemistry And Technology
, J.P. Travers - [CEA Grenoble]
J.P. Travers,,
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, D. Djurado - [CEA Grenoble]
D. Djurado,,
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Journal seriesSynthetic Metals, ISSN 0379-6779, (A 30 pkt)
Issue year2013
Vol166
Pages63-69
Publication size in sheets0.5
Keywords in Englishpolyaniline ; anisotropy ; structure ; conductivity ; magnetic properties
ASJC Classification2505 Materials Chemistry; 2506 Metals and Alloys; 2210 Mechanical Engineering; 2211 Mechanics of Materials; 3104 Condensed Matter Physics; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1016/j.synthmet.2013.01.017
URL http://www.sciencedirect.com/science/article/pii/S037967791300043X
Languageen angielski
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syntheticmetals_2013_166_63.pdf 692.96 KB
Score (nominal)30
ScoreMinisterial score = 30.0, 05-09-2019, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 05-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 1; Scopus Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2014 = 0.943; WoS Impact Factor: 2013 = 2.222 (2) - 2013=2.256 (5)
Citation count*1 (2015-05-17)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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