Conducting copolymers of polypyrrole/polytetrahydrofuran |
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Authors: | Nurcan Kizilyar Levent Toppare Ay?en Önen Yusuf Ya?ci |
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Affiliation: | (1) Middle East Technical University, Department of Chemistry, TR-06531, Ankara, Turkey, TR;(2) Istanbul Technical University, Department of Chemistry, TR-80670, Istanbul, Turkey, TR |
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Abstract: | Summary
Bifunctional living polytetrahydrofuran (PTHF) was terminated with potassium salt of pyrrole to yield polymers with electrochemically
active end groups. These polymers were employed in the second stage to obtain conducting polypyrrole/polytetrahydrofuran block
copolymers with short and long polytetrahydrofuran segments by potentiostatic anodic polymerization of pyrrole in different
electrolytic media. Syntheses of block copolymers were achieved in media where tetrabutylammonium fluoroborate, sodium perchlorate
and sodium p-toluenesulfonate were used as the supporting electrolytes. Characterizations were based on DSC, TGA, SEM, FTIR,
and CV analyses. No significant effect of the chain length of polytetrahydrofuran segments on the properties of the copolymers
was observed; however, thermal, electrochemical behaviors, and surface morphologies of the films were greatly affected by
the supporting electrolytes.
Received: 5 January 1998/Revised version: 25 March 1998/Accepted: 27 March 1998 |
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