F. Pariente, E. Lorenzo, H. Abruña
Dec 1, 1994
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2
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Journal
Analytical Chemistry
Abstract
The oxidation of 3,4-hydroxybenzaldehyde (3,4-DHB) on glassy carbon electrodes fives rise to stable redoxactive electropolymerized gives containing a quinone moiety. The redox response of the films is that anticipated for a surface-immobilized redox couple, and the pH dependence of the redox activity of these films is 60 mV/ pH unit, which is very close to the anticipated Nernstian dependence of 59 mV/pH unit. We have characterized the dependence of the growth of these films on the solution concentration of 3,4-DHB, the potential for deposition, the time of deposition, and the pH. In addition, we have measured their permeability and apparent diffusion coefficient (D app ) of these films