Search academic texts

Information × Registration Number 0224U000846, 0122U001387 , R & D reports Title Fluorescent heterocyclic ligands for binding, analysis and accumulation of radioactive isotopes of bivalent metal ions popup.stage_title Head Roshal Oleksandr D., Доктор хімічних наук Registration Date 14-01-2024 Organization V.N. Karazin Kharkiv National University popup.description2 The main goal of the work is to obtain fluorochromic ligands for binding radionuclide ions in the process of their accumulation by the extraction method, and the formation of complexes with metal ions should lead to changes in the fluorescent characteristics of the ligand. The final goal of the research is the development of a new method of fluorescent control of the concentration of radionuclides before radiometric determination of their activity.The general fundamental problem, the solution of which is aimed at the researches, is the development of a new methodological approach to the analysis of radionuclides, which includes the simultaneous use of the two most sensitive methods – fluorescence spectroscopy and radiometry In the second stage of the research, 13 flavonol derivatives were obtained. They are of being ligands with several different complexation centers that can be used for extractive analysis or accumulation of metal ions. A conformationally flexible polyheterocyclic disulfo-NOPON ligand was also obtained, which, thanks to a change in conformation, can form different complexation centers depending on the type of metal ion. hermodynamic parameters of complex formation, stability constants, and interphase distribution coefficients of disulfo-NOPON complexes with UO 2 2+ ions and fission products of uranium atoms by Sr 2+ , Y 3+ , and Ce 4+ ions were studied. Studies have shown that this ligand can be used for fluorescent analysis of uranium ions in the presence of other ions – products of radioactive destruction of uranium atoms, as well as for extractive accumulation of Ce 4+ ions.  Product Description popup.authors Yefimova Natalia V Gladkov Yevgenii S. Kyrychenko Oleksandr V. Kolomoitsev Oleksii O. Krasnopyorova Alla P. Pilipenko Oleksii I. Roshal Oleksandr D. Cheipesh Tetiana O. Yukhno Halyna D. popup.nrat_date 2024-01-14 Close