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Information × Registration Number 0217U001481, 0116U004751 , R & D reports Title Study of electron-vibrational processes in composites and nanosystems promising for solar energy, low power-consuming light sources and medicine popup.stage_title Head Yashchuk Valerij Mykolayovych, Доктор фізико-математичних наук Registration Date 17-02-2017 Organization Taras Shevchenko Kiev University popup.description2 The films based on carbazole-containing polymers and low molecular compounds for "one-component" radiating layer characterized by the photoluminescence spectrum close to white light have been created; their luminescent properties have been studied. The processes of electronic excitation energy transfer in solid mixtures of polymer/dye based on a number of typical polymer matrix and low molecular fluorophores have been investigated. Spectral properties of polymethine dyes (merocyanines, anionic - derivatives of indandione, azazulen) have been studied; spectral features of charge transfer in them were established. In layered nanostructures (NS) containing dense 2D monolayers of silver nanoparticles (NPs) the bands of extinction caused by excitation of the collective surface plasmon modes with different orientation of the dipole moment have been discovered. These bands show different frequency and intensity dependence on the angle of incidence of the light beam/ Excitation of surface plasmon polaritons and an effect of surface enhancement of the field of electromagnetic wave on laser-induced quasi-grating NS on metal surfaces has been demonstrated. The method of determination of matrix of spinor (electron) representations based on the basic functions of the rotation operator for spinor group of rotations using quantum theory of angular momentum has been developed. For the first time the reconciliation of these matrices with matrices of spinor group of rotation for the crystallographic symmetry groups has been accomplished. For the first time the method of determination of the matrices of projective representations of symmetry groups that define the symmetry of different magnetic classes of Shubnikov groups has been elaborated. It was found that the main absorbing centers in telomere are separate nucleotides and guanine quadruplexes. The traps of triplet electron excitations in telomere, as well as macromolecule of DNA, are complexes formed by adjacent adenine (A) and thymine (T) chromophores (this complex is formed by adjacent A- and T-chromophores of the same chain, and instead of A- T complementary chromophores with different chains); the traps of singlet excitations in telomere is to be G-chain and possibly G-quadruplex. It is shown that the efficiency of excitation of singlet oxygen (SO) depends as on the configuration terminal groups of polymethine dyes, and on the bridge connecting the chromophores. More efficient generation of triplet states in thiasquarel dye compared to the corresponding parent squarel has been explained using quantum chemical simulations. For water activation two methods are developed and 4 devices was produced. It has been revealed that NPs of polystyrene bind the molecules of chlorine e6, forming joint nanosystem. The role of encapsulated in 2.5-diphenyloxazole as an intermediary in the energy transfer of electron excitation from the residual styrene to the bound molecule of chlorine e6 has been elucidated. It was shown that NPs absorb X-rays and transfer the electron excitation on the bounded chlorine e6. The temperature dependence of the IR spectra of water, methanol and hexanol in matrix isolation, IR absorption spectra of water, hexanol, nonanol, dekanol in the condensed state, Raman spectra of water at different temperatures have been studied. Product Description popup.authors Білий Микола Михайлович Березовська Наталія Іванівна Дегода Володимир Якович Дорошенко Ірина Юріївна Косач Віталій Віталійович Лосицький Михайло Юрійович Науменко Антоніна Прокопіївна Становий Олександр Петрович Чернолевська Єлизавета Анатоліївна Яхненко Маріанна Сергіївна popup.nrat_date 2020-04-02 Close