Hnatiuk K. Dielectric relaxation and phase transitions of systems undecylenic acid-silica gel

Українська версія

Thesis for the degree of Doctor of Philosophy (PhD)

State registration number

0824U002073

Thesis Registration Form

0824U002073.pdf

Applicant for

Specialization

  • 104 - Фізика та астрономія

20-06-2024

Specialized Academic Board

5646

Taras Shevchenko National University of Kyiv

Essay

The dissertation consists of an introduction part, four chapters, conclusions, a list of references, and an appendix. The introduction highlights the relevance of the chosen research, specifically justifying the selection of research objects. The aim of this study is delineated, along with a comprehensive enumeration of tasks requisite for attaining the proposed objectives. Additionally, a list of the selected experimental methodologies employed in the research is presented. The novelty and practical implications of the findings of this study are also identified. In the first chapter, the current state of research on the selected topic is examined, as well as the known information about the systems studied in this work. Specifically, the chapter delves into the practical uses of the researched nanocomposites, highlighting the pharmacological application of undecylenic acid for fungal infection treatment and exploring its potential role as an apoptosis inducer in the fight against cancer. It presents details on theoretical models of phase transitions and dielectric relaxation, which are employed in this study to analyze experimental data.

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Research papers

M. M. Lazarenko, A. N. Alekseev, S. A. Alekseev, K. I. Hnatiuk, O. F. Demidiuk, K. S. Yablochkova, N. O. Atamas, and M. V Lazarenko, Topological Solitons in Chain Molecular Crystals with Stoichiometric Obstacles and Hydrogen Bonds, J. Phys. Chem. Solids 144, 109514 (2020).

K. I. Hnatiuk, A. N. Alekseev, S. A. Alekseev, Y. E. Grabovsky, K. S. Yablochkova, M. V Lazarenko, and M. M. Lazarenko, Investigation of the Structure and Mechanisms of Thermal Motion in Nanostructured Undecylenic Acid, Mol. Cryst. Liq. Cryst. 701, 16 (2020).

M. M. Lazarenko, S. A. Alekseev, K. I. Hnatiuk, R. V Dinzhos, M. S. Nizameev, N. S. Koseva, F. Ublekov, A. G. Kuzmich, E. G. Rudnikov, K. S. Yablochkova, and others, The Impact of the Silica Gel Structure and Surface Chemistry on the Melting of Aliphatic Nanocrystals: Thermodynamic Model and Experiment, J. Phys. Chem. Solids 110426 (2022).

K. I. Hnatiuk, M. M. Lazarenko, S. A. Alekseev, K. S. Razghonova, K. S. Yablochkova, R. V Dinzhos, N. M. Fialko, M. V Lazarenko, and A. N. Alekseev, Investigation of Relaxation Processes and Phase Transitions in the Silica Gel-Undecylenic Acid System Using IR Spectra in a Wide Temperature Range, Mol. Cryst. Liq. Cryst. 1 (2022).

K. I. Hnatiuk, Y. F. Zabashta, M. M. Lazarenko, S. A. Alekseev, K. S. Yablochkova, M. V Ushcats, R. V Dinzhos, L. Y. Vergun, D. A. Andrusenko, A. N. Alekseev, and L. A. Bulavin, Dielectric Relaxation in Nanocrystals: A Scale Effect, J. Phys. Chem. C 127, 12107 (2023). DOI:10.1021/acs.jpcc.3c01523.

Y. F. Zabashta, M. M. Lazarenko, О. М. Alekseev, M. V Ushcats, K. I. Hnatiuk, R. V Dinzhos, N. M. Fialko, L. Y. Vergun, and L. A. Bulavin, Features of Nanocrystal Melting, Mol. Cryst. Liq. Cryst. 1 (2022).

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Files

autoreferat-Анотація_Гнатюк.pdf

Дисертація_Гнатюк.pdf

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