Electroanalysis · 1996 · 18 citations · 8 references
Natural SciencesChemistryMaterials ScienceElectroanalytical MethodsElectrochemistryPolymer ChemistryConducting PolymersConductive PolymersElectroanalytical ChemistryElectrochemical DetectionElectrode MaterialsOrganic SemiconductorsChemical PropertiesConducting Polymer ElectrodesConductive Polymer ElectrodesDifferential Pulse VoltammetryElectrochemical OxidationPolymer ElectrodesPolymer-modified ElectrodesVoltammetric Detection
Abstract Polymer‐modified electrodes have been prepared by electrochemical oxidation of 2‐aminopyridine and 4‐aminopyridine in acetonitrile and their chemical properties have been characterized. The polymer films thus prepared were insulators but can be doped with Ag + or Fe(CN) to produce semiconducting films. The doping must have been accomplished by the complexation of Ag + with functional groups or trapping of Fe(CN) in the polymer matrix. It has also been demonstrated that these films can be used for chemical analysis of Ag + by first collecting Ag + and running subsequent differential pulse voltammetric experiments. The dynamic linearity was excellent in the concentration range of 10 −7 –10 −2 M and the detection limit was about 5 × 10 −8 M.
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