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Reference type: Journal
Authors: Nezhadali A, Rouki Z, Nezhadali M
Article Title: Electrochemical preparation of a molecularly imprinted polypyrrole modified pencil graphite electrode for the determination of phenothiazine in model and real biological samples.
Publication date: 2015
Journal: Talanta
Volume: 144
Page numbers: 456-465.
DOI: 10.1016/j.talanta.2015.06.082

Abstract: A sensitive electrochemical sensor for determination of phenothiazine (PTZ) was introduced based on molecularly imprinted polymer (MIP) film. A computational study was performed to evaluate the template-monomer geometry and interaction energy in the prepolymerization mixture. The electrode was prepared during electropolymerization of pyrrole (Py) on a pencil graphite electrode (PGE) by cyclic voltammetry (CV) technique. The quantitative measurements were performed using differential pulse voltammetry (DPV) in Britton-Robinson (BR) buffer solutions using 60% (v/v) acetonitrile-water (ACN/H2O) binary solvent. The effect of important parameters like pH, monomer concentration, number of cycles, etc on the efficiency of MIP electrode was optimized and the calibration curve was plotted at optimal conditions. Two dynamic linear ranges of 1-300 μmol L-1 and 0.5-10 mmol L-1 were observed. The detection limit (based on S/N=3) of PTZ was obtained 3 x 10-7 mol L-1. The MIP/PGE has been successfully applied as a selective sensor for fast and accurate determination of PTZ in some model and real biological samples
Template and target information: phenothiazine, PTZ
Author keywords: molecularly imprinted polymer, polypyrrole, Pencil graphite electrode, electropolymerization, Phenothiazine (PTZ)

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