Free Access
J. Chim. Phys.
Volume 95, Number 6, June 1998
Page(s) 1172 - 1175
DOI: 10.1051/jcp:1998240

J. Chim. Phys. Vol. 95, N°6  p. 1172-1175

On the cathodic doping of poly(3-methylthiophene)

L.M. Abrantes1, J.P. Correia2 and J. González1, 3

1  ICAT, Faculdade de Ciências, Campo Grande, 1700 Lisboa, Portugal
2  INETI, Departamento de Energias Renováveis, 1699 Lisboa, Portugal
3  Departamento de Química Física, Universidad de Murcia, 30100 Murcia, Spain

The characteristics of the P-3MeTh redox processes have been analysed by voltammetry and chronoamperometry; the transport of ions between the polymer film and the bathing solution in a potential range covering both p- and n-doping regions has been monitored by using the probe beam deflection technique. The obtained data is discussed under the light of a model considering the polymer is formed by segments of different lengths.

Les caractéristiques des processus redox du P-3MeTh sont analysées par voltampérométrie et chronampérométrie dans un domaine de potentiel où les dopages n et p ont lieu. Le mouvement des ions entre le polymère et la solution a été suivi par la technique d'effet mirage. Les résultats sont examinés à la lumière d'un modèle basé sur l'existence de segments de différente longueurs dans le polymère.

Key words: poly(3-methylthiophene) -- cathodic doping -- probe beam deflection

© EDP Sciences 1998

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