Synthesis, photophysics, electrochemistry, thermal stability and electroluminescent performances of a new europium complex with bis(-diketone) ligand containing carbazole group

We synthesized a new europium complex [Eu(ecbpd)(3)(Phen)] with bis(-diketone) ligand containing a carbazole group, in which ecbpd and Phen are dehydro-3,3-(9-ethyl-9H-carbazole-3,6-diyl)bis(1-phenylpropane-1,3-dione) and 1,10-phenanthroline, respectively. Its UV/vis and photoluminescent spectra, quantum yield, luminescence lifetime, electrochemistry, thermal stability and electroluminescent performances were studied. This europium complex showed low efficiency luminescence, which is probably due to the mismatching energy levels of its ligand and Eu3+, as well as the double Eu3+ core resonance.