Title

Metal Ion Incorporation in the Conducting Polymer Electrode Matrix Using an 'Active' Metal Substrate

Document Type

Article

Publication Title

Journal of Elecroanalytical Chemistry

ISSN

1572-6657

Volume

434

Issue

1-2

First Page

61

68

Publication Date

1997

Abstract

The incorporation of free transition metal cations (potential redox catalyst centers) into conducting organic films by electrodeposition is relatively rare due to the repulsive nature of the positive cation radicals of the polymer itself during polymerization. This paper shows that such metal cations can be trapped in the polymer matrix as it is being electrodeposited on a metalsubstrate electrode, which itself simultaneously electro-oxidizes (corrodes).The electropolymerization of 3-methylthiophene on Mo(0), Ni(0) and Fe(0) substrate electrodes ('active electrodes') is reported. SEM, EDXRF, and XPS were used to demonstrate the amount of metal cations in and/or on thepolymer matrix and to determine the valence states. The rates of diffusion ofthe incorporated metal ions into an LiClO4 electrolyte solution were also studied. The presence of trace amounts of all three metal cations were sufficient to destroy the electroactivity of the polymer film electrodes for theoxidation of catechol. (C) 1997 Elsevier Science S.A.

Publication Information

Marawi, I., Khaskelis, A., Galal, A., Rubinson, J., Popat, R., Boerio, F., & Mark, H. (n.d). Metal ion incorporation in the conducting polymer electrode matrix using an 'active' metal substrate. Journal Of Electroanalytical Chemistry, 434(1-2), 61-68.

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