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Lanthanide-Sensitized Lanthanide Luminescence:  Terbium-Sensitized Ytterbium Luminescence in a Trinuclear Complex

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journal contribution
posted on 2003-08-08, 00:00 authored by Stephen Faulkner, Simon J. A. Pope
A heterotrinuclear lanthanide complex has been prepared which contains two terbium ions in DO3A-derived binding sites and a single ytterbium ion in a DTPA-like site. The luminescence properties of the system have been investigated, showing that the terbium remains in a seven-coordinate binding site throughout the synthesis, while the ytterbium occupies the eight-coordinate site. Pumping the 488 nm absorption band of the terbium ion results in energy transfer to ytterbium with emission at 980 nm.