Research Information System
Journal of Molecular Liquids, vol.433, 2025 (SCI-Expanded, Scopus)
A new green sensing platform based on arginine (ARG) and carbon black (CB) modified pencil graphite electrode (PGE) with ARG prepared by electropolymerization in deep eutectic solvents (DES) has been developed. The electrochemical properties of the sensor were characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and the morphological characterization of scanning electron microscopy (SEM). This study showed that using CB with good electrical conductivity and excellent mechanical properties, together with poly(ARG) conducting polymer, improved the sensor's analytical properties better than using either material alone due to synergistic effects. The study presents original findings on the electropolymerization behavior of ARG in DES, providing a new perspective on polymerization mechanisms in such media. The analytical characteristics of poly(ARG)reline/CB/PGE were evaluated for the voltammetric individual determination of QE and CA by differential pulse voltammetry (DPV). The practical applicability of the sensor was successfully performed to detect the QE and CA in human serum and fruit-infused tea. The results from the developed sensor were corroborated by LC-MS/MS. The novel sensor is disposable, easy to fabricate, low-cost, and reproducible. This work represents a novel approach to the development of electrochemical sensors, offering a more environmentally friendly and straightforward methodology. It also demonstrates the benefits of poly(amino acid) electropolymerization in DES media for future electrochemical applications.