“…The study of rare earth coordination complexes has been a very attractive subject due to their widely potential applications as luminescence probes or sensors in chemical or biological systems, as active center of luminescent materials or electroluminescent (EL) devices [1,2]. In particular, lanthanide complexes with aromatic carboxylates can be applied in organic light-emitting diodes (OLED) as components forming the light-emitting layer of the device [3].…”