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    Complexation of a crown-substituted naphthalimide derivative with heavy metals in Langmuir monolayers

    Year: 2018

    Journal: Russ. Chem. Bull., Volume 67, DEC, page 2259–2261

    Authors: Shepeleva, I. I.; Shokurov, A. V.; Bogdanova, L. B.; Arslanov, V. V.; Panchenko, P. A.; Fedorova, O. A.; Selektor, S. L.

    Organizations: Russian Foundation for Basic Research [16-33-60024_mol_a_dk]

    Keywords: naphthalimides; crown ethers; Langmuir monolayers; fluorescence; complexation

    It was demonstrated that, in contrast to a solution in an organic solvent, the relaxation of the excited state of a fluorophore moiety proceeds mainly radiationless upon the formation of naphthalimide fluoroionophore complexes with complementary cations in a monolayer on a water surface. Apparently, this is due to the fact that the distribution of the energy levels of molecular orbitals in the fluoroionophore complexes with cations at the air-water interfaces changes in such a way that relaxation of the excited state via charge transfer within the complex molecule remains possible.
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