Abstract

Abstract Lanthanide complexes with ortho- phosphorylated phenolate ligands LnL 3 (Ln = Eu, Tb, Lu; HL 1 = 2-di( p -tolyl)phosphorylphenol; HL 2 = 2-diphenylphosphoryl-4-ethylphenol) were synthesized for the first time and characterized by elemental analysis, FTIR, 1 H, 31 P NMR spectroscopy, LDI-TOF mass-spectrometry. The energy gap between the triplet energy level and the corresponding resonance level of a lanthanide ion ( 5 D 1 for Eu 3+ and 5 D 4 for Tb 3+ ) is optimal for luminescence sensitization of only terbium ions. Bright green photo- and electroluminescence of terbium complexes was demonstrated.

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