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Photoluminescent lanthanide complexes of Eu 3+ and Tb 3+ as central atoms and N 6 , N 6' -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, 1H and 13C 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 Eu 3+- and Tb 3+-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 Tb 3+- and Eu 3+-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.
Original language | English |
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Article number | 5540 |
Journal | Polymers |
Volume | 14 |
Issue number | 24 |
DOIs | |
State | Published - 18 Dec 2022 |
ID: 101252066