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Electrical properties of polybithiophene‐polystyrene composites
Author(s) -
Morsli M.,
Bonnet A.,
Samir F.,
Lefrant S.
Publication year - 1996
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19960711)61:2<213::aid-app3>3.0.co;2-s
Subject(s) - materials science , seebeck coefficient , electrical resistivity and conductivity , polystyrene , percolation (cognitive psychology) , composite material , percolation threshold , thermoelectric effect , doping , polymerization , thermal conduction , conductive polymer , polymer , atmospheric temperature range , conductivity , polymer chemistry , thermal conductivity , chemistry , thermodynamics , optoelectronics , electrical engineering , physics , neuroscience , engineering , biology
Conducting composites consisting of polybithiophene and based on porous crosslinked polystyrene as host polymer have been synthetized in the vicinity and above the percolation threshold by oxidative polymerization with FeCl 3 . Electrical conductivity and thermoelectric power measurements for different degrees of doping have been carried out in the temperature range 80–300 K. The electrical conductivity variations are weakly thermally activated while the thermoelectric power has metallic magnitude with positive sign and increases with temperature. Conduction mechanisms are interpreted on the basis of an hopping model involving bipolaronic clusters. © 1996 John Wiley & Sons, Inc.