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