Preparation and Photoluminescent Properties of Doped Ternary Europium Complexes Bearing 1-(Naphthalen-2-yl)-3-phenylpropane-1, 3-dione

Abstract

Rare earth (RE) ternary complexes of Eu0.5Ln0.5(NPPD)3×DPQ (HNPPD = 1-(naphthalen-2-yl)-3-phenylpropane-1, 3-dione; DPQ = Dipyridobenzoquinone; Ln3+= Nd3+, Er3+, Ce3+, Dy3+), Eu1-xYx(NPPD)3×DPQ and Eu1-xLux(NPPD)3×DPQ (x= 0.0, 0.1, 0.3, 0.5, 0.7, 0.9) were synthesized by the reaction of RECl3×6H2O with HNPPD and DPQ in stoichiometry. The UV-vis and fluorescence properties of the complexes were investigated. The experimental results show that the luminescence efficiency of Eu3+complexes was enhanced by doping some other lanthanide ions.

Dysprosium Single-Molecule Magnets Involving 1,10-Phenantroline-5,6-dione Ligand

“…Its electro-activity could be exploited to modulate the physical properties as a function of its oxidation state, i.e., to design redox magnetic and photo-emissive switches, as already published with other redox-active ligands [31][32][33]. The L ligand was employed to design both pure 4f [34][35][36][37][38][39] and hetero-bimetallic nd4f [40][41][42] coordination complexes to study their biological activities and photo-physical properties. It is worth noting that the elaboration of hetero-bimetallic compounds implies the reduction of the ligand in its 5,6-dihydroxy-1,10-phenantroline form.…”