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

Craze, Alexander R, Huang, Xin-Da, Etchells, Isaac, Zheng, Li-Min, Bhadbhade, Mohan M, Marjo, Christopher E, Clegg, Jack K, Moore, Evan G, Avdeev, Maxim, Lindoy, Leonard F and Li, Feng (2017) Synthesis and characterisation of new tripodal lanthanide complexes and investigation of their optical and magnetic properties.. Dalton transactions (Cambridge, England : 2003), 46 36: 12177-12184. doi:10.1039/c7dt02556d


Author Craze, Alexander R
Huang, Xin-Da
Etchells, Isaac
Zheng, Li-Min
Bhadbhade, Mohan M
Marjo, Christopher E
Clegg, Jack K
Moore, Evan G
Avdeev, Maxim
Lindoy, Leonard F
Li, Feng
Title Synthesis and characterisation of new tripodal lanthanide complexes and investigation of their optical and magnetic properties.
Journal name Dalton transactions (Cambridge, England : 2003)   Check publisher's open access policy
ISSN 1477-9234
Publication date 2017-09-28
Sub-type Article (original research)
DOI 10.1039/c7dt02556d
Open Access Status Not yet assessed
Volume 46
Issue 36
Start page 12177
End page 12184
Total pages 8
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.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Pubmed Import
 
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Created: Wed, 15 Nov 2017, 13:47:30 EST