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Information × Registration Number 0310U002830, 0106U006393 , R & D reports Title Optical and electronic properties of homogeneous and heterogeneous systems on the basis of in-organic and organic compounds for photonics, biophotonics and nanoelectronics popup.stage_title Вивчення процесів взаємодії електромагнітного випромінювання з досліджуваними середовищами. Head Yashchuk Valeriy Mykolajovych, Доктор фізико-математичних наук Registration Date 05-07-2010 Organization Taras Shevchenko Kiev university popup.description2 The photostable traps of triplet excitations -adenosine chains, ability to coupling (bonding) with protein macromolecules have been revealed for RNA by spectroscopic methods. The absorption spectra give evidence of formation of complex between hemaporphyrin and surface-active substance PAA, Au nanoparticles. At 77К the probability of intercombination conversion to the triplet state in carbazole-, phenothiasine- and indole-containing substances is increasing, that is important for creation of OLED/OPhED. Fluorecence spectra of dyes in polysterene (pS) indicate the possibility of application of ПС as fluorescent matrix. The phase transitions in liquid crystals were studied as an example of 2 isomers of esters. The change of the sample intramolecular structure, namely turning of the phenil rings plane by the definite angle, was discovered. The dispersion of vibrational states was studied; the contribution of К-, М-, А-points of Brilouin zone in the formation of Raman spectra of одностенных carbon nanotubes was shown, the quantization conditions of vibrational states with к = 0 and к # 0 were determined. The possibility of the concerted using of phenomenon of mutarotation and Raman spectroscopy for investigation of structural bulding of water was shown. At Т=2-4К effect of stepwise termalization under the exciton responance excitation in nanoparticlles. The method of determination of true Stokes shift in ansamble of nanoparticles with wide size distibution was elaborated. Enhancement of interaction between Au nanoparticles under increasing of filling factor of nanocomposite brings to the decrease of melting temperature of nanoparticles. Giant amplification of PL of Ag nanoparticles with sizes of ~ 10 nm was obtained. Experimentally determined, that the evidence of scattering influenced both the PL intensity and band shape of luminescence. Product Description popup.authors popup.nrat_date 2020-04-02 Close