Structure and emission properties of Er3Q9 (Q = 8-quinolinolate).
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.
Artizzu
Flavia
F
Dipartimento di Chimica Inorganica ed Analitica, Università di Cagliari, Cittadella di Monserrato, I-09042 Monserrato, Cagliari, Italy.
Deplano
Paola
P
Marchiò
Luciano
L
Mercuri
Maria Laura
ML
Pilia
Luca
L
Serpe
Angela
A
Quochi
Francesco
F
Orrù
Riccardo
R
Cordella
Fabrizio
F
Meinardi
Francesco
F
Tubino
Riccardo
R
Mura
Andrea
A
Bongiovanni
Giovanni
G