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Ultrathin films of diazoresin(DR)/single-walled carbon nanotube(SWNT) were fabricated on thioglycollic acid(TGA) decorated gold(Au) electrodes by the self-assembly method combined with the photocrosslinlcing technique.The electrochemical behavior of dopamine(DA) at the DR/SWNT modified electrodes was studied using the cyclic voltammetry(CV) and differential pulse voltammetry(DPV) methods.Under the optimal conditions,a linear CV response to DA concentration from 1 μmol/L to 40 μmol/L was observed,and the detection limit of DA was 2.1 ×10~(-3) μmol/L via the DPV method in the presence of 10 μmol/L of uric acid(UA) or 2.5 × 10~(-3) μmol/L via the DPV method in the presence of10 μmol/L of ascorbic acid(AA).Moreover,the modified electrodes exhibited good reproducibility and sensitivity,demonstrating its feasibility for analytical purposes.
Ultrathin films of diazoresin (DR) / single-walled carbon nanotubes (SWNTs) were fabricated on thioglycollic acid (TGA) decorated gold (Au) electrodes by the self-assembly method combined with the photocrosslinlcing technique. at the DR / SWNT modified electrodes was studied using the cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods. Undefined optimal conditions, a linear CV response to DA concentration from 1 μmol / L to 40 μmol / the detection limit of DA was 2.1 × 10 -3 mol / L via the DPV method in the presence of 10 μmol / L of uric acid (UA) or 2.5 × 10 -3 mol / L via the DPV method in the presence of 10 μmol / L of ascorbic acid (AA). More over, the modified electrodes exhibited good reproducibility and sensitivity, demonstrating its feasibility for analytical purposes.