Synthesis, characterization, photophysical properties of lanthanide complexes with flexible tripodal carboxylate ligands

Chi Fai Chan, Hongguang Li, Chunyu Seto, Hoi Lam Tam, Ga Lai Law, Ka Leung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

Three series of lanthanide complexes [LnL1, LnL2and LnL3Ln = Eu, Gd and Tb] have been synthesized with tripodal amide ligands. These ligands have similar benzoate antenna with different substituent groups at para-position (L1= -OME, L2= -H; L3= -CF3). The antenna effect is known to play a prominent role in the luminescence of the lanthanide ions emitting in the coordination complexes. The effect of the ligands triplet and antenna effect have been studied here. The room and low temperature photophysical properties of the nine complexes have been monitored in solution with excitation at 330 nm. The emission antenna effect (quantum yield and emission intensity) varied with the triplet state of ligand that comes from the substituent on the benzoate antenna.
Original languageEnglish
Pages (from-to)939-944
Number of pages6
JournalPolyhedron
Volume52
DOIs
Publication statusPublished - 22 Mar 2013

Keywords

  • Europium
  • Lanthanide
  • Luminescence
  • Terbium

ASJC Scopus subject areas

  • Inorganic Chemistry
  • Materials Chemistry
  • Physical and Theoretical Chemistry

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