Conducting polyaniline-graphene oxide fibrous nanocomposites: preparation, characterization and simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid

Detection of dopamine on a mercapto-terminated hexanuclear Fe(III) cluster modified gold electrode

“…Meanwhile, electrode poisoning problems associated with dopamine polymerization can be circumvented by using self-assembled monolayers (SAMs) modified electrodes that inhibit polymer formation [24] or by modification of the electrode with conducting polymer films, including polypyrrole, polyaniline, etc. [25][26][27]. As for the sensitivity, several composite materials with electrocatalytic activity are modified onto the surface of electrodes.…”

Triggering interface potential barrier: A controllable tuning mechanism for electrochemical detection

“…In order to validate it, a comparative test was performed. As AA (pKa ¼4.1) and UA (pKa ¼ 3.7) (Manivel et al, 2013) are negatively charged at pH ¼7.4, under the optimum oxidation potentials ( Fig. S4a and b), the introduction of Φ b actually caused the response signal of AA and UA being significantly decreased (Fig.…”

Recent Progress in the Development of Conducting Polymer‐Based Nanocomposites for Electrochemical Biosensors Applications: A Mini‐Review

“…Graphene oxide (GO) and reduced graphene oxide as new members of carbon nanomaterial, have been applied for fabricating the polyaniline composites by in situ chemical or electrochemical polymerization, covalent or non‐covalent functionalization, and self‐assembly. For example, Viswanathan's group has prepared polyaniline/graphene oxide fibrous nanocomposites via an in situ chemical polymerization method and investigated the electrochemical catalytic activity toward the electro‐oxidation of ascorbic acid, dopamine and uric acid. The DPV measurements showed well‐defined oxidation peaks at PANI‐GO/GCE with peak potential value of −30 mV, 290 mV and 520 mV for AA, DA and UA, respectively (Figure ).…”