Mono- and Terfluorene Oligomers as Versatile Sensitizers for the Luminescent Eu 3+ Cation
Résumé
We present the design, synthesis, and physical and photophysical characterization of Eu(3+) and Gd(3+) complexes formed with two ligands bearing either one or three fluorene sensitizer units. As a novel sensitizing approach, the oligomer length is used to control the energies of the triplet states of the sensitizer and to mediate the sensitizer to lanthanide energy transfer.