Synthesis and photoluminescence of a dendritic europium complex with carbazole moieties

A novel dendritic europium complex containing grafted carbazole units as functional peripheries was synthesized and characterized. The Forster energy transfer from the peripheries of carbazole units to beta-diketonate as well as from the ligands to the central Eu(III) ions in the complex was demonstrated. Under the excitation of carbazole units and beta-diketonate, characteristic red emission peaks at 612 run with four shoulders due to the Eu(III) ion transition of D-5(0) -> F-7(j) (J=0-4) were observed for the complex.