Jump to main content
Jump to site search

Issue 36, 2017
Previous Article Next Article

Synthesis and characterisation of new tripodal lanthanide complexes and investigation of their optical and magnetic properties

Author affiliations

Abstract

This paper presents the synthesis of a tripodal ligand (H3L) via the Schiff base condensation of N,N-diethylsalicylaldehyde and tris(2-aminoethyl)amine. The neutral complexes of type [EuL], [GdL] and [DyL] were synthesized and characterized by FT-IR, SEM-EDS, PXRD, single crystal X-ray diffraction, CHN analysis and high resolution ESI-MS. X-ray crystallographic studies demonstrated that the heptadentate ligand incorporating a cavity pre-organized by hydrogen bonding binds the Ln(III) ions to yield a face capped octahedral coordination geometry with three-fold symmetry. Photoluminescence studies show a typical Ln(III) absorption character for the three complexes, with [EuL] demonstrating considerably stronger lanthanide-based luminescence peaks, and a Eu(III) centered luminescence lifetime of 0.144 ± 0.01 ms. Temperature/field-dependent DC and temperature/frequency-dependent AC magnetic measurements carried out for the Dy(III) complex indicated obvious magnetic anisotropy and suggested slow relaxation behaviour with considerable quantum tunnelling of the magnetization contribution.

Graphical abstract: Synthesis and characterisation of new tripodal lanthanide complexes and investigation of their optical and magnetic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 14 Jul 2017, accepted on 18 Aug 2017 and first published on 21 Aug 2017


Article type: Paper
DOI: 10.1039/C7DT02556D
Citation: Dalton Trans., 2017,46, 12177-12184
  •   Request permissions

    Synthesis and characterisation of new tripodal lanthanide complexes and investigation of their optical and magnetic properties

    A. R. Craze, X. Huang, I. Etchells, L. Zheng, M. M. Bhadbhade, C. E. Marjo, J. K. Clegg, E. G. Moore, M. Avdeev, L. F. Lindoy and F. Li, Dalton Trans., 2017, 46, 12177
    DOI: 10.1039/C7DT02556D

Search articles by author

Spotlight

Advertisements