Lanthanide complexes with substituted naphtholate ligands: extraordinary bright near-infrared luminescence of ytterbium |
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| Authors: | A. P. Pushkarev V. A. Ilichev T. V. Balashova D. L. Vorozhtsov M. E. Burin D. M. Kuzyaev G. K. Fukin B. A. Andreev D. I. Kryzhkov A. N. Yablonskiy M. N. Bochkarev |
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| Affiliation: | 1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603950, Nizhny Novgorod, Russian Federation
2. Institute for Physics of Microstructures, Russian Academy of Sciences, 7 ul. Akademicheskaya, 603950, Nizhny Novgorod, Russian Federation
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| Abstract: | A series of Pr, Nd, Ho, Er, Tm, and Yb complexes with 3-(2-benzoxazol-2-yl)-2-naphtholate and 3-(2-benzothiazol-2-yl)-2-naphtholate ligands was synthesized. The structure, as well as the photo- and electroluminescent properties of these complexes were studied. An extraordinary bright emission of Yb3+ was detected. To explain the phenomenon, a novel excitation mechanism involving intramolecular electron transfer was proposed. |
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