Preparation,Characterization and Analytical Applications of a New and Novel Electrically Conducting Polymer

In this study, a glassy carbon electrode (GC) was modified with an electropolymerized film of 1‐naphthylamine (1‐NAP) with a subsequent overoxidation treatment in 0.2 M sodium hydroxide solution. This polymer p‐1‐NAPox film coated GC electrode was used for the selective determination of dopamine (DA) in the presence of a triple concentration of ascorbic acid (AA).These studies were performed using cyclic voltammetry and square‐wave voltammetry at physiological pH. p‐1‐NAPox shows an attractive permselectivity, a marked enhancement of the current response and antifouling properties when compared to a bare GC electrode activated in basic media. With a preconcentration time of 3 minutes at open circuit, linear calibration plots were obtained for DA in buffer solution (pH 7.4) over the concentration range from 1×10^?6–1×10^?4 M with a detection limit of 1.59×10^?7 M.