Ln(III) complexes (Ln = Eu, Gd, Tb, Dy) with a chiral ligand containing 1,10-phenanthroline and (-)-menthol fragments: Synthesis, structure, magnetic properties and photoluminescence

Stanislav V. Larionov, Yuliya A. Bryleva, Ludmila A. Glinskaya, Victor F. Plyusnin, Arkady S. Kupryakov, Alexander M. Agafontsev, Alexey V. Tkachev, Artem S. Bogomyakov, Dmitry A. Piryazev, Ilya V. Korolkov

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

A series of lanthanide(iii) complexes based on the new chiral ligand L, which contains 1,10-phenanthroline and (-)-menthol fragments, namely [LnL2(NO3)3] (Ln = Eu (1), Gd (2), Tb (3), Dy (4)), have been synthesized and structurally characterized. Complexes 1-4 are isostructural and crystallize in the non-centrosymmetric space group P41212. The mononuclear complexes comprise a 10-coordinate Ln3+ ion with two bidentate N,N-donor ligands (L) and three bidentate chelating nitrate groups. The magnetic properties of complexes 1-4 are determined mainly by the Ln3+ ions. In the case of complexes 3 and 4, significant anisotropy results in nonlinear field dependences of magnetization at low temperature. Complexes 1, 3 and 4 exhibit metal-centered red (Eu3+), green (Tb3+) and yellow (Dy3+) luminescence, respectively, whereas complex 2 displays blue ligand-based luminescence in the solid state at room temperature. The luminescence quantum yield for the solid samples increases in the order 4 < 2 ≈ 3 < 1. The europium(iii) complex shows long luminescence lifetimes (up to 1750 μs) and a very high quantum yield (φf = 0.87); these make this compound promising for application in sensing and optoelectronics.

Original languageEnglish
Pages (from-to)11440-11450
Number of pages11
JournalDalton Transactions
Volume46
Issue number34
DOIs
Publication statusPublished - 29 Aug 2017

Keywords

  • LUMINESCENT EUROPIUM
  • CRYSTAL-STRUCTURES
  • ENERGY-TRANSFER
  • DESIGN
  • PR
  • SM

Fingerprint Dive into the research topics of 'Ln(III) complexes (Ln = Eu, Gd, Tb, Dy) with a chiral ligand containing 1,10-phenanthroline and (-)-menthol fragments: Synthesis, structure, magnetic properties and photoluminescence'. Together they form a unique fingerprint.

Cite this