Registration Number
0223U000615,
0121U113219
, R & D reports
Title
Development of a long-term plan for the development of a scientific direct "Mathematical Sciences and Natural Sciences"
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Head
Gysak Andrii M., д.ф.-м.н.
Minaiev Borys P., Доктор хімічних наук
Registration Date
16-01-2023
Organization
Bohdan Khmelnytsky National University of Cherkasy
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Purpose of work is the development of new materials based on perylenes, tetraoxacirculenes, nitrides, as well as nanofibers of metal oxides with further establishment of the theory of their structure, kinetics of nucleation, growth and coalescence of nanostructures and their practical application in nanoelectronics.
A series of 24 bowl-shaped derivatives of dicyclopenta[ghi,pqr]perylene (DCPP) were simulated. They were functionalized by various approaches, including the introduction of functional aza-, fluoro-, and imide groups, as well as the introduction of triethylsilylethynyl groups and increase the π-conjugated system by condensing the original perylene with benzene or naphthalene fragments. The most promising p-, n-, and ambipolar semiconductors among the investigated bowl-shaped DCPP derivatives have been established. In addition, the high linear and nonlinear optical activity of DCPP derivatives shows their potential for application in optoelectronics. It is shown that the studied oligomers based on tetraoxa[8]circulene with size of 2x2 and 3x3 are polyaromatic systems consisting of 108π (2x2) and 168π (3x3) electrons in the outer perimeter with a global diatropic current. The extended π-conjugated system of 2x2 and 3x3 TOC oligomers is responsible for the unique nature of photoinduced charge transfer nature and vibrational spectra. It was found that strong absorption at the 500 nm is characteristic of doubly degenerate states S3(4) (1Eu). A number of high-nitrogen compounds of the class of pentazoles, diazoaminoarenes, and aliphatic diazo compounds were screened. The characteristic features of the synthesis process of vanadium pentoxide nanofibers by the hydromechanical method were studied, experimental time dependences of the conductivity and hydrogen index of the suspension were obtained depending on the intensity of mixing, the composition and temperature of the suspension for the optimization of the process of controlled synthesis.
Product Description
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Bondarchuk Sergii V.
Gonda Andrii R.
Karaush-Karmazin Nataliia M.
Lyashenko Yurii O.
Minaeva Valentina O.
Nikolenko Yurii V.
Panchenko Oleksandr O.
Pasichnyy Mykola O.
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2023-01-16
