A novel composite nanostructure (GO–Por) has been prepared via ultrasonication and exhibited enhanced electrocatalytic activity towards catechol oxidation.

In this study, electropolymerization of pre‐synthesized N,N′‐di‐[3‐[2‐(3‐thienyl)ethyl] phenyl] perylene‐3,4,9,10‐bis(dicarboximide) (ThPDITh) was performed on Au button electrode and the properties of the resultant polymer P(ThPDITh) were investigated by electrochemical techniques. Effect of the polymerization charge on the redox behaviors of the polymer film was investigated by cyclic voltammetry (CV) and the polymer film was further characterized by electrochemical impedance spectroscopy (EIS) measurements. Corresponding electrical equivalent circuit was applied to the experimental data to explain the electrochemical phenomenon on the interface of the Au/P(ThPDITh). In order to obtain information on the energy storage properties of P(ThPDITh) as a pseudo‐capacitive electrode material, important cell characteristics, such as redox process in anodic and cathodic potential ranges, stability of galvanostatic charge–discharge (GCD) curves, coulombic efficiency, capacitance, energy and power density values were determined. Capacitance values, obtained through different measurements (CV, EIS and GCD) are all in good agreement with each other. All the results suggested that P(ThPDITh) is capable of undergoing multiple reversible redox processes, and a good candidate for improving the capacitance and energy density of electrode material while still offering high power capability.

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A polyoxy group attached diazo dye on an electrode surface improved the voltammetric response of epinephrine.

A novel perylene diimide (PDI-C 8 SAc) was used as a modifier for carbon felt electrode (CFE) and prepared modified electrode was applied for dopamine detection. Obtained electrochemical current was almost 15-fold higher compared to plain CFE. Also a cathodic shift in the peak potential was obtained indicating the electrocatalytic effect of the developed sensor. Under optimized experimental conditions, a linear range was observed between 1-100 μM with a limit of detection value of 0.084 μM (n = 3). The fabricated sensor was successfully utilized for the dopamine determination in dopamine based medicines.

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A MWCNT–Au–Pt hybrid nanostructure was used in the fabrication of electrochemical colchicine sensors for the first time.