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Постійне посилання на розділhttps://repository.kpi.kharkov.ua/handle/KhPI-Press/35393
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Документ The influence of different factors on exploitation properties of nonlinear optical polymeric materials based on an epoxy matrix doped with flavonoids(2020) Mishurov, Dmytro; Voronkin, Andrii; Nedilko, Olga; Zykina, IrynaThe paper is devoted to investigations of exploitation properties of nonlinear-optical (NLO) polymer film materials based on an epoxy matrix doped with flavonoids. Adhesion of the polymer films to a glass substrate is investigated. Also, the influence of photoinduced destruction on functional properties of these polymer composites by UV–Vis spectroscopy method is studied. Effect of various microorganisms such as mold fungi of Aspergillus niger (A. niger) and Pinicillum chrysogenum (P. chrysogenum) species on the polymer NLO materials are analyzed by evaluation of the fungistatic effect and fungicidal resistance and using the FTIR spectroscopy. As a result it is established that the NLO polymer film materials based an epoxy matrix doped with flavonoids have a very good adhesion to the glass substrate, and they are stable to the photoinduced destruction. These materials do not have the fungistatic effect but they demonstrate some fungicidal resistance. This phenomenon is explained by the presence of flavonoids, which are natural antiseptics.Документ Synthesis and Characterization of Dye-Doped Polymer Films for Non-linear Optical Applications(Lviv Polytechnic National University, 2019) Mishurov, Dmytro; Voronkin, Andrii; Roshal, Alexander; Bogatyrenko, Sergiy; Vashchenko, OlgaIn this work polymer nonlinear optical (NLO) materials in the form of thin films based on 3,7,3’,4’-tetrahydroxyflavone and diglycidyl ether of bisphenol A were obtained and investigated. It was found that the influence of the chromophore concentration on values of the macroscopic NLO susceptibilities (χ(2) of doped polymer films has extreme character. The maximum value of χ(2) is 6.11 pm/V at the concentration of dopant 20 wt %.Документ The Sulfonation of 3,5,7,3’,4’-Pentahydroxyflavone and Non-Linear-Optical Activity of its Sulfonic Derivatives(Lviv Polytechnic National University, 2019) Mishurov, DmytroSynthesis of sulfoquercetin and studies of its structure and nonlinear properties have been carried out. Using quantum-chemical simulations,13С and HSQC NMR spectrometry, FTIR spectroscopy it was shown that a sulphonic group occurs in C8 location of quercetin. Molecular first hyperpolarizability of the obtained 8-sulfoquercetin was studied. It was shown that 8-sulfoquercetin can be used for creation the new polymer NLO materials on its basis.Документ X-ray diffraction analysis of quercetin and polymers based on its(NGO the Institute for Social Transformation, 2018) Mishurov, Dmytro; Voronkin, Andrii; Roshal, AlexanderSynthesis of glycidyl ethers of quercetin and studies of their structure have been carried out. The X-ray studies of glycidyl ethers of quercetin were performed using by the Debye–Sherrer method. The XRD data are in good correlation with the results of thermophysical studies and analysis by the scanning electron microscopy method, which was carried out earlier.Документ Influence of structure 3,5,7,3',4'–Pentahydroxyflavone-based polymer films on their optical transparency(2017) Mishurov, Dmytro; Voronkin, Andrii; Roshal, Alexander; Bogatyrenko, SergeyOptical properties and morphology of polymer films based on diglycidyl ether of bis-phenol A and on natural compound 3,5,7,30 ,40 epentahydroxyflavone (quercetin) using UVevis spectroscopy, scanning electron microscopy and powder X-ray diffraction methods have been investigated. The influence of ordering degree of the polymers, flexibility of their chains, intensity of intermolecular interaction between the quercetine moieties on the polymers' morphology was discussed. It is shown that all the quercetine-based polymer films are transparent at visible and near infrared regions beginning from 420 to 450 nm. Low optical transparency in the short-wavelength region can be explained the self-absorption of quercetin moieties in the polymer chains