Structure and emission properties of Er3Q9 (Q = 8-quinolinolate) |
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Authors: | Artizzu Flavia Deplano Paola Marchiò Luciano Mercuri Maria Laura Pilia Luca Serpe Angela Quochi Francesco Orrù Riccardo Cordella Fabrizio Meinardi Francesco Tubino Riccardo Mura Andrea Bongiovanni Giovanni |
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Affiliation: | Dipartimento di Chimica Inorganica ed Analitica, Università di Cagliari, Cittadella di Monserrato, I-09042 Monserrato, Cagliari, Italy. |
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Abstract: | We report the first combined optical and structural investigation of the water free Er-quinolinolate complex, an organo-lanthanide system of interest for 1.5-microm telecom applications. Structural data demonstrate that the complex has a trinuclear structure (Er3Q9) which provides the Er metals with an octa-coordination by the organic ligand and prevents solvent and water molecules from entering the lanthanide coordination sphere. The results of the structural analysis allow us to infer that the strong Er luminescence quenching exhibited by the Er3Q9 complex is due uniquely to resonant energy transfer to the aromatic C-H vibrations of the ligand, providing the correct tools to design more efficient emitters. |
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