Lanthanide Ion Luminescence in Coordination Chemistry and Biochemistry

Effect of varying lanthanide local coordination sphere on luminescence properties illustrated by selected inorganic and organic rare earth complexes synthesized in sol–gel host glasses

“…The large magnitude of the spin-orbit coupling in lanthanides causes the individual J levels of the various electronic terms to be well separated from each other except for the ground 7 F 0 and emissive 5 D 0 states of Eu (III), which are nondegenerate. The highly forbidden 5 D 0 -7 F 0 transition of Eu (III) is particularly important in that only a single transition is possible for a single Eu (III) ion environment [68].…”

Heteronuclear trimetallic and 1D polymeric 3d–4f Schiff base complexes with OCN− and SCN− ligands

“…The Ln(III) ions are tencoordinate being bound only to O atoms, four from the Schiff base, four from two bidentate NO 3 -groups, one from the OCNgroup and one from a water molecule. The zig-zag chain like structure can be compared to that observed in the heterobimetallic 3d-4f species [CuL¢Pr(NO 3 ) 2 …”

Color tunable organic light emitting diodes using Eu complex doping

“…Eu emits saturated red color. Organic Eu complexes exhibit high internal quantum efficiency [15,16] since the Eu ion is excited by intramolecular through-bond energy transfer from the organic ligand excited state [17,18]. Accordingly, the energy gap for Eu complex is much wider than for the regular organic red emissive materials, thus we can select the Eu complex such that it has a slightly smaller energy gap than the NPB host material.…”