Yh. Kim et al., Energy transfer from pi-conjugated ligand to rare-earth ions in (diethienyl-bipyridazine) Eu3+ complex, SYNTH METAL, 101(1-3), 1999, pp. 240-241
We have carried out energy transfer studies of 5,5'-(2-dithienyl)-2,2'-bipy
ridazine Eu+3 (DTBPZ-Eu) complexes. Tuning the excitation to the oligomer a
bsorption band, we have obtained characteristic Eu+3 photoluminescence. Lon
g lived excitations that are photogenerated in the pure oligomer are absent
in the complex, indicating a fast energy transfer process.