Complexation of a crown-substituted naphthalimide derivative with heavy metals in Langmuir monolayers
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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.
Key wordsnaphthalimides crown ethers Langmuir monolayers fluorescence complexation
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- 5.J. S. Bradshaw, K. E. Krakowiak, R. M. Izatt, in The Chemistry of Heterocyclic Compounds, Ed. J. S. Bradshaw, John Wiley & Sons, 2009.Google Scholar