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Information × Registration Number 0214U005312, 0113U003681 , R & D reports Title New bis(benzocrown)ethers based on quinoxaline: synthesis, structure and properties popup.stage_title Head Lyapunov Alexander Yurievich, Registration Date 20-01-2015 Organization A.V.Bogatsky Physico-Chemical Institute of the National Academy of Sciences of Ukraine popup.description2 Research object - quinoxaline-based bis crown-ethers, their luminescent and complexation properties. A purpose - Development of method of new biscrown ethers synthesis, containing fragment of quinoxaline and benzo-15-crown-5, and benzo-18-crown-6 residues. The study of their complexation properties. Assess the prospects of using of the synthesized compounds as sensors for alkali metal cations. Research methods - organic synthetsis, NMR spectroscopy, mass-spectrometry, UV-Vis and luminescence spectroscopy. A new method developed and new biscrown ethers containing central quinoxaline moiety and benzo-15-crown-5, and benzo-18-crown-6 residues synthesized. Their stability constants with alkali metal cations determined. It is shown that the receptor based on benzo-15-crown-5 may be used for luminescent determination of rubidium and potassium cations in the presence of excess sodium cations. This suggests the prospects of creating new chemosensors based on the obtained biscrown ethers suitable for the selective luminescence determination of alkali metal cations. Product Description popup.authors Кікоть Леонід Станіславович Ляпунов Олександр Юрійович popup.nrat_date 2020-04-02 Close