In situ conductivity measurements on polyethylenedioxythiophene derivatives with different counter ions

• Published in: Synthetic metals Vol. 126; no. 2; pp. 193 - 198
• Main Authors: Aubert, P.-H., Groenendaal, L., Louwet, F., Lutsen, L., Vanderzande, D., Zotti, G.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 14-02-2002; Amsterdam Elsevier Science; New York, NY
• Subjects: Akylated derivative; Applied sciences; Electrical, magnetic and optical properties; Exact sciences and technology; In situ conductivity; Morphology; Organic polymers; Physicochemistry of polymers; poly(3,4-ethylenedioxythiophene); Properties and characterization; Akylated derivative; In situ conductivity; poly(3,4-ethylenedioxythiophene); Morphology; Conducting polymers; Electrical conductivity; Electrical properties; Thiophene derivative polymer; Hexafluophosphates; Doped polymer; Experimental study; Perchlorates; Comparative study; Tetrafluoborates; Sulfonate
• ISSN: 0379-6779; 1879-3290
• DOI: 10.1016/S0379-6779(01)00521-5

3,4-Ethylenedioxythiophene (EDT) and thieno-(3,4-b)-2,3-dihydro-2-tetradecyl-1,4-dioxane (EDT-C
14) were electrochemically deposited onto Pt using different electrolytes in acetonitrile. The resulting PEDT films containing different counter ions were subsequently characterized and their in situ conductivity values were measured using a two band electrode. The latter showed that the highest conductivities were obtained with ClO
4
− and BF
4
− as counter ions. Furthermore, the morphology, and thus the conductive properties, of the films seem to be strongly dependent on the applied polymerization potential.