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Synthesis and characterization of electrically conducting copolymers based on biphenyl and thiophene
Author(s) -
Simitzis Johannis,
Triantou Despina,
Soulis Spyridon
Publication year - 2010
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/app.32493
Subject(s) - copolymer , materials science , thiophene , cyclic voltammetry , conductivity , polymer chemistry , biphenyl , conductive polymer , chemical engineering , electrical resistivity and conductivity , fourier transform infrared spectroscopy , solubility , analytical chemistry (journal) , composite material , polymer , electrode , electrochemistry , chemistry , organic chemistry , electrical engineering , engineering
New electrically conducting copolymers based on biphenyl and thiophene in a form of film were synthesized by electropolymerization using potentiostatic conditions and the corresponding homopolymers, polyphenylenes, and polythiophenes, for comparison reasons. Different values of applied potential were used, to study its effect on the structure, morphology, and electrical conductivity of the films. From the analysis of the current‐time curves, it was found that the growth of the films follows layer by layer (2D) mechanism. The films were studied by FTIR, TGA, XRD, SEM‐EDAX and their electrical conductivity was determined, as well as their energy gap ( E g ) by cyclic voltammetry. The copolymers had higher conductivity (appr. 1 S/cm) and lower E g (appr. 1.2 eV) than that of the corresponding homopolymers. These materials due to their high conductivity, high stability under repetitive potential cycling, and partial solubility are candidates for electronic applications. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010