Abstract
A new way to synthetize conducting polymers has recently been reported and is investigated further in this study. Poly(2,2′:5′,2″ terthiophene) is electrochemically prepared at an electrified liquid-iquid interface between two immiscible electrolyte solutions (ITIES) and initiated by a heterogeneous electron transfer (HET) between an aqueous couple (Ce(IV)/Ce(III)) and the 2,2′:5′,2″ terthiophene monomer in 1,2-dichloroethane (1,2-DCE). In the present study, we suggest the growth mechanism for the polymer formation to be different than that observed at a metal electrode. Indeed, the nature of the interface generally regarded as a region formed by several mixed solvent layers, has a significant effect on the polymerization as well as on the electrochemical and physico-chemical properties of the resulting polymer. Galvanostatic polymerization, electrochemical impedance spectroscopy and FTIR spectroscopy performed on this polymer allow us to confirm this effect.
Original language | English |
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Pages (from-to) | 365-373 |
Number of pages | 9 |
Journal | Synthetic Metals |
Volume | 125 |
Issue number | 3 |
DOIs | |
Publication status | Published - 20 Dec 2001 |
Keywords
- Conducting polymers
- Electrified liquid-liquid interface
- Galvanostatic polymerization
- Semi-conductors