The Power of Voltammetry

Gulaboski, Rubin and Maksimova, Viktorija and Janeva, Milkica (2018) The Power of Voltammetry. In: Alexander von Humboldt Kolleg, 19-23 April 2018, Ohrid, Macedonia.

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Majority of the chemical processes taking place in our Universe have a “redox” origin (redox=reduction-oxidation). The exchange of a charge (electrons of ions) between two neighbouring systems that are in contact can lead to a flow of electrical current. Almost a century ago, an instrumental technique had been developed capable to study the redox processes of various substances. The basic principles of this electroanalytical technique, named as “polarography”, had been established by Jaroslaw Heyrovsky, who was awarded with Nobel Prize of chemistry in 1959 for his invention. In the last 70 years, we witnessed a very fast development of large number electroanalytical techniques evolving from Heyrovsky’s polarography. Voltammetric techniques are, indeed, the most advanced members in the family of electroanalytical techniques. Voltammetry involves application of a time-dependent potential as a driving force, while the measuring output is the corresponding electrical current that flows between the working and reference electrode. In the last 60 years we saw great number of rigorous theoretical and mathematical models describing various mechanistic pathways of many important systems. Moreover, reliable voltammmetric methods have been developed to access the thermodynamics and kinetics of charge transfer in many important systems. Nowadays, the voltammetry is almost an inevitable toll in every physical, chemical, pharmaceutical, biological, metallurgical and environmental laboratory. Designed initially to study the processes of corrosion, voltammetry evolved in a very powerful instrumental technique that can be intensively used to get insight into the drug-drug interactions, the ion transfer across biological membranes, the processes of metal-ligand complex formation, the enzyme-substrate reactions, the polymerization reactions, in the electro-synthesis, further in designing bio-fuel cells, in studying the chemical features of nano-materials, and many more. What impresses by this technique is the velocity of obtaining relevant chemical information, the simplicity of the experimental set-up, and the very low costs of the instrumentation. In this lecture we refer to some of the greatest achievements of voltammetry in last 30 years.

1. A. J. Bard, G. Inzelt, F. Scholz, Electrochemical Dictionary, Springer, 2012.
2. A. J. Bard, L. R. Faulkner, Electrochemical Methods, Fundamentals and Applications, Willey, 2001.

Item Type: Conference or Workshop Item (Lecture)
Subjects: Medical and Health Sciences > Basic medicine
Natural sciences > Chemical sciences
Divisions: Faculty of Medical Science
Depositing User: Rubin Gulaboski
Date Deposited: 25 Apr 2018 07:53
Last Modified: 25 Apr 2018 07:53

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