Belarusian State University, Minsk, Belarus, M.Sc. Chem.(2009), Ph.D.(2012)

Phone: (574) 631-4347
Email: alisousk@nd.edu
Office: 105C Radiation Research Building

Radiation chemistry and photochemistry in aqueous solutions

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Scientific Interests

Pulse Radiolysis of Aqueous Media

Kinetics and mechanisms of radical reactions under extreme conditions. Pulse radiolysis of hyper-reduced metal ions over wide temperature ranges

Radiation- and Photo-induced Reactions in Biomolecules

Radiation-chemical yields of products formed from biomolecules in aqueous medium. Direct and sensitized photodestruction of organic compounds.

EPR Spectroscopy of Radical Intermediates

Detection and characterization of radicals derived from sphingolipids and model compounds on OH-radical and UV-induced damage

 

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Recent Accomplishments

Reduction of CO₂ by hydrated electrons in high temperature water

The reduction of CO₂  is of great interest in the cooling water of nuclear reactors as well as in solar photochemistry. The reaction rate of hydrated electrons, (e-)_aq, with CO₂  was measured in water using transient absorption spectroscopy and electron pulse radiolysis over the temperature range from 5 to 350ºC. Importantly, the reaction of (e-)aq with CO₂  in high-temperature water showed non-Arrhenius behavior .

Radicals derived from sphingolipids and model compounds

The effect of ionization radiation on sphingolipids and their model compounds in aqueous solutions was investigated. Our studies were first to identify bioactive 2-hexadecenal among the major products of of γ-, UV- and HOCl-induced destruction of sphingolipids. This enabled us to derive mechanisms for the free radical damage of the polar part of sphingolipids. In the proposed mechanism, the formation of N-centered radicals is an important step.

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Selected Publications

Janik I., A. Lisovskaya, D.M. Bartels. “Partial molar volume of the hydrated electron.” J. Phys. Chem. Lett. 10 (2019) 2220-6. link

Shadyro O., A. Lisovskaya. “ROS-induced lipid transformations without oxygen participation.” Chem. Phys. Lipids.221 (2019) 176-83. link

Lisovskaya A., D.M. Bartels D.M. “Reduction of CO₂ by hydrated electrons in high temperature water.” Radiat. Phys. Chem.158 (2019) 61-63. link

Lisovskaya A., Procenko K., Shadyro O. “Photochemical transformations of sphingosine and serinol in aqueous and ethanol solutions.” High Energ. Chem.51 (2017) 321–6. link

Shadyro O., A. Lisovskaya, G. Semenkova, I. Edimecheva, N. Amaegberi. “Free-radical destruction of sphingolipids resulting in 2-hexadecenal formation.” Lipid Insights, 8 (2015) 1–9. link

Sladkova А.А., A.G. Lisovskaya, A.A. Sosnovskaya, I.P. Edimecheva, O.I. Shadyro. “Destruction of amino alcohols and their derivatives on radiolysis and photolysis in aqueous solutions.” Radiat. Phys. Chem.96 (2014) 229–237. link

 

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