Synthesis, characterization, and photophysical properties of first heterobinuclear Zn-Ln (Ln = La, Nd, Eu, Gd, Tb, Er, and Yb) Complexes Based on Asymmetric Schiff-Base Ligand

Shunsheng Zhao*, Xiangrong Liu, Xingqiang Lü, Rick W K WONG

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

With a novel asymmetric Schiff-base zinc complex ZnL(H 2 L = N-(3-methoxysalicylidene)-N-(5-(4-cyanophenyl)-3-methoxysalicylidene) phenylene-1, 2-diamine), obtained from phenylene-1, 2-diamine, 3-methoxysalicylaldehyde, and 5-(4-cyanophenyl)-3-methoxysalicylaldehyde, as the precursor, a series of heterobinuclear Zn-Ln complexes [ZnLnL(NO 3) 3 (CH 3 CN)] (Ln = La, 1; Ln = Nd, 2; Ln = Eu, 3; Ln = Gd, 4; Ln = Tb, 5; Ln = Er, 6; Ln = Yb, 7) were obtained by further reaction with Ln(NO3)3 · 6H2O. Photophysical studies of these complexes show that the strong and characteristic NIR luminescence with emissive lifetimes in the microsecond range has been sensitized from the excited state of the asymmetric Schiff-base ligand due to effective intramolecular energy transfer.

Original languageEnglish
Pages (from-to)109-116
Number of pages8
JournalSpectroscopy Letters
Volume46
Issue number2
DOIs
Publication statusPublished - 1 Feb 2013

Scopus Subject Areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy

User-Defined Keywords

  • asymmetric Schiff base
  • near-infrared
  • sensitization and energy transfer

Fingerprint

Dive into the research topics of 'Synthesis, characterization, and photophysical properties of first heterobinuclear Zn-Ln (Ln = La, Nd, Eu, Gd, Tb, Er, and Yb) Complexes Based on Asymmetric Schiff-Base Ligand'. Together they form a unique fingerprint.

Cite this