In this article ternary lanthanide complexes consisting of a calixarene unit and dibenzoylmethane (dbm) as the antenna are described. In the europium complex [(Eu)2]NO3 two solvent molecules are still coordinated to the ion, making substitution of them by the dbm antenna possible. In the ternary complex of europium, an energy back-transfer process plays an important role. The photophysical properties of complexes of three near-infrared emitting lanthanide(III) ions were determined, i.e. ytterbium, neodymium, and erbium. These exhibit dbm-sensitized emission, with luminescent lifetimes comparable to those in other organic ligand systems.
- Lanthanide complexes
- Calixarene complexes
Hebbink, G. A., Klink, S. I., Oude Alink, P. G. B., & van Veggel, F. C. J. M. (2001). Visible and near-infrared light emitting calixarene-based ternary lanthanide complexes. Inorganica chimica acta, 317(1-2), 114-120. https://doi.org/10.1016/S0020-1693(01)00344-9