The luminescence properties of solid [Tb⊂bpy·bpy·bpy]3+, [La⊂bpy·bpy·bpy]3+, and [Na⊂bpy·bpy·bpy]+ are reported for temperatures down to 4.2 K. The 2,2′-bipyridine phosphorescence in the case of the La3+ and Na+ cryptate is quenched by energy migration to killers. In the case of Tb3+, however, efficient energy transfer from the cryptand to Tb3+ takes place up till 100 K. At that temperature migration competes with energy transfer to Tb3+, reducing the Tb3+ luminescence output. The rates of the processes involved are determined as accurately as possible. A comparison is made with the same cryptate molecules in solution. © 1988 American Chemical Society.

Luminescence processes in [Tb⊂bpy·bpy·bpy]3+ cryptate: A low-temperature solid-state study

Perathoner, S.;
1988-01-01

Abstract

The luminescence properties of solid [Tb⊂bpy·bpy·bpy]3+, [La⊂bpy·bpy·bpy]3+, and [Na⊂bpy·bpy·bpy]+ are reported for temperatures down to 4.2 K. The 2,2′-bipyridine phosphorescence in the case of the La3+ and Na+ cryptate is quenched by energy migration to killers. In the case of Tb3+, however, efficient energy transfer from the cryptand to Tb3+ takes place up till 100 K. At that temperature migration competes with energy transfer to Tb3+, reducing the Tb3+ luminescence output. The rates of the processes involved are determined as accurately as possible. A comparison is made with the same cryptate molecules in solution. © 1988 American Chemical Society.
1988
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/3131386
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