101. Structural Features of Eu 3+ and Tb 3+ -Bipyridinedicarboxamide Complexes.
- Author
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Miroshnichenko, Anna S., Deriabin, Konstantin V., Rashevskii, Artem A., Suslonov, Vitalii V., Novikov, Alexander S., Mukhin, Ivan S., and Islamova, Regina M.
- Subjects
TERBIUM ,RARE earth metals ,NUCLEAR magnetic resonance ,POLYETHYLENE glycol ,MASS spectrometry ,INFRARED spectroscopy - Abstract
Photoluminescent lanthanide complexes of Eu
3+ and Tb3+ as central atoms and N6 ,N6 '-diisopropyl-[2,2′-bipyridine]-6,6′-dicarboxamide as ligand were synthesized. The structure of these complexes was established by single-crystal X-ray diffraction, mass spectrometry,1 H and13 C nuclear magnetic resonance, ultraviolet-visible, infrared spectroscopy, and thermogravimetry. Bipyridinic ligands provide formation of coordinatively saturated complexes of lanthanide ions and strong photoluminescence (PL). The Eu3+ - and Tb3+ -complexes exhibit PL emission in the red and green regions observed at a 340 nm excitation. The quantum yield for the complexes was revealed to be 36.5 and 12.6% for Tb3+ - and Eu3+ -complexes, respectively. These lanthanide compounds could be employed as photoluminescent solid-state compounds and as emitting fillers in polymer (for example, polyethylene glycol) photoluminescent materials. [ABSTRACT FROM AUTHOR]- Published
- 2022
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