Synthesis and Properties of Highly Efficient Luminescent Zn‐Tb and Zn‐Eu Multimetal Complexes

ABSTRACT Salen‐type Schiff‐base ligands (H 2 L) were synthesized through the condensation reaction between 1,2‐diphenylethane‐1,2‐diamine and o‐vanillin. Three novel luminescent Zn‐Ln complexes, [ZnL] 2 Ln (Ln = Gd, Tb, Eu), were successfully prepared by reacting the zinc complex (ZnL) with LnCl 3 . Subsequent treatment of [ZnL] 2 Ln with dibenzoylmethane yielded three dinuclear derivatives, β‐[ZnL]Ln (Ln = Gd, Tb, Eu). All complexes were comprehensively characterized by single‐crystal X‐ray diffraction and FT‐IR spectroscopy. Structural analyses revealed that complexes 1–3 adopt trinuclear Zn‐Ln‐Zn architectures, whereas complexes 4–6 exhibit dinuclear Zn‐Ln configurations. Solid‐state photoluminescence…

• NN
  National Natural Science Foundation of China

  Awards: 22365035, 22476147
• NS
  Natural Science Foundation of Zhejiang Province

  Award: LY21B010001