Polymer films on electrodes. 5. Electrochemistry and chemiluminescence at Nafion-coated electrodes

Ion-exchange voltammetry at polymer film-coated nanoelectrode ensembles.

Ensembles of nanoscopic disk-shaped electrodes have been shown to offer enhancements in electroanalytical detection limits relative to electrodes of macroscopic dimensions (e.g., disk electrodes with diameters of ∼1 mm). Enhancements in electroanalytical detection limits have also been observed at macroscopic electrodes that have been coated with films of ion-exchange polymers. In this paper we...

XIX. Electrochemical Behavior at Polypyrrole-Nafion and Polypyrrole-Clay Thin Films on Glassy Carbon Electrodes

Biconductive films, involving the incorporation of an electronically conductive phase within an ionically conductive one, on glassy carbon electrode surfaces have been prepared by electropolymerization to form polypyrrole (PP) in matrices of Nation and the clay, hectorite. These films display electronic conductivity and higher stability than films of PP alone. Electrochemical studies of several...

Polymer films on electrodes . 20 . An ESR study of several spin probes incorporated into Nafion

Polymer films on electrodes. 9. Electron and mass transfer in Nafion films containing tris(2,2'-bipyridine)ruthenium(2+)

The electrochemical behavior of Ru(bpy),2+ (bpy = 2,2'-bipyridine) contained in 2-"thick films of the perfluorosulfonate polymer Nafion on glassy carbon is described. The apparent diffusion coefficient, D, , for the 2+ and 3+ forms was determined by potential-step chronoamperometric measurements to be (5 & 2) X cm*s-l. Dapp for the 2+ form was independent of loading of R ~ ( b p y ) , ~ + in th...

Poly(ester sulphonic acid) coated mercury thin film electrodes: characterization and application in batch injection analysis stripping voltammetry of heavy metal ions.

Mercury-thin film electrodes coated with a thin film of poly(ester sulphonic acid) (PESA) have been investigated for application in the analysis of trace heavy metals by square wave anodic stripping voltammetry using the batch injection analysis (BIA) technique. Different polymer dispersion concentrations in water/acetone mixed solvent are investigated and are characterised by electrochemical i...