Luminescent Lanthanide Complexes supported by Ditopic Schiff-Base/Calix[4]arene Macrocycles: Synthesis, Structure, and Luminescence properties of [Ln2(H2L2)(H2O)2] (Ln=La, Eu, Tb, Yb)

The ditopic macrocycle H8L2 comprising two 3,3'-dihydroxy-4,4'-bis(iminomethyl)-biphenyl and two calix[4]arene units was synthesized and its ability to bind lanthanide ions has been studied. H8L2 reacts readily with Ln(III) nitrate salts...