A [(1H-1,2,4-triazole-3-ylimino)methyl]naphthalene-2-ol (TMN-2-ol) film modified platinum (Pt) electrode has been fabricated by the electrochemical oxidation in acetonitrile solution. The modified surface was characterized by electrochemical impedance spectroscopy (EIS), scanning electron microscope (SEM), and X-ray photoelectron spectroscopy (XPS). The prepared Pt electrode can be used as a functional interface to sensitive and selective determination of dopamine (DA) in the presence of uric acid (UA) and ascorbic acid (AA) by square wave voltammetry (SWV) method. The limit of detection (LOD) and limit of quantification (LOQ) of DA were 9.25 × 10 −8 and 2.78 × 10 −7 M, respectively. Linear range of DA was found to be between 3.95 × 10 −7 and 4.19 × 10 −6 M.

 CV, RAIRS and CAM characterizations were performed for bare Pt and TMN-2-ol/Pt electrode surfaces.  A new voltammetric sensor was developed for the determination of uric acid.  The TMN-2-ol/Pt electrode was used for determination of UA in blood serum samples. In this study [(1H-1,2,4-triazole-3-ylimino) methyl]naphtalene-2-ol (TMN-2-ol) was deposited at the platin electrode to fabricate a new sensor and used for the determination of uric acid in the presence of ascorbic acid (AA) and dopamine (DA) Electrocatalytic activity against uric acid (UA) was determined using modified electrode. Comparing with the bare Pt and TMN-2-ol modified Pt (TMN-2-ol/Pt) electrode, the TMN-2-ol /Pt electrode has higher catalytic activities towards the oxidation of UA in the presence of AA and DA. Figure A shows that electrode modification provided 5.54-fold increase at the precision.