Electrochemical characterization of phenytoin and its derivatives on bare gold electrode
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2015
Authors
Trišović, Nemanja
Božić, Bojan

Lović, Jelena

Vitnik, Vesna

Vitnik, Željko

Petrović, Slobodan D.
Avramov Ivić, Milka

Article (Published version)

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Show full item recordAbstract
Phenytoin (5,5-diphenylhydantoin), one of the most frequently used anticonvulsant and antiarrhythmic drugs, was examined and determined at bare gold electrode in 0.05 M NaHCO3 using its anodic activity by cyclic voltammetry (CV) and square wave voltammetry (SWV). Gold electrode is highly sensitive to the phenytoin concentration (the investigated level of concentrations is usually found in human serum of patients treated with phenytoin), providing linear relationships for a set of lower concentrations (0.5, 0.6, 0.8, 1.0 mu mol dm(-3)) and for a set of higher concentrations (10, 20, 30, 40, 50 mu mol dm(-3)). The effects of the substituent on the phenyl rings on the electrochemical behavior of two derivatives, 5,5-di(4-chlorophenyl) hydantoin and 5,5-di(4-methylphenyl) hydantoin, were examined by CV. A computational study in correlation with the experimental voltammetric results enabled to propose the oxidation mechanisms: the investigated compounds undergo oxidation involving transfer ...of 1e(-) and 1 proton by irreversible, diffusion controlled process.
Keywords:
phenytoin derivatives / gold electrode / concentration dependency / DFT calculationSource:
Electrochimica Acta, 2015, 161, 378-387Publisher:
- Pergamon-Elsevier Science Ltd, Oxford
Projects:
- Study of the Synthesis, Structure and Activity of Natural and Synthetic Organic Compounds (RS-172013)
- Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-172035)
- New approach in designing materials for energy conversion and energy storage systems (RS-172060)
- Modeling and Numerical Simulations of Complex Many-Body Systems (RS-171017)
DOI: 10.1016/j.electacta.2015.02.114
ISSN: 0013-4686