Synthesis and photophysical characterization of luminescent lanthanide complexes of nucleotide-functionalized cyclen- and dipicolinate-based ligands

The synthesis and photophysical properties of dota- or dipicolinic acid-based Eu(III)- and Tb(III)-emitters are reported. All complexes carry a 2′- or 5′-linked uridine. Eu- and Tb-luminescence was sensitized by the picolinic acid or a coumarin antenna. The possibility of energy transfer from a Eu- to a Nd-complex was investigated.61