Electrochemical synthesis of new conducting copolymers containing pseudo-polyether cages with pyrrole
By Cihaner, Atilla
Published in Journal of Electroanalytical Chemistry
2007
Abstract
Conducting copolymers have been synthesized via electrochemical oxidation of pyrrole (Py) in the presence of monomer 1,11-bis(1,1-pyrrole)-3,6,9-trioxaundecane (I) in an electrolytic solution containing 0.1 M tetrabutylammonium hexafluorophosphate (TBAPF6) dissolved in acetonitrile. It is observed that reversible redox behavior of poly(I-co-Py)s shifts to more positive potentials with the increasing amount of I in the comonomer mixture, indicating formation of a copolymer. It is also found that increasing the ratio of I in the comonomer mixture decreases the conductivity of the obtained polymer films. The dark electrical conductivity measurements in the temperature range of 300–100 K revealed the extrinsic type of conduction with activation energy values being in the range of 82.3–16.9 meV.