Issue 26, 2017

3D Ln-MOFs containing pentanuclear clusters exhibiting magnetic refrigeration and slow magnetic relaxation

Abstract

Two isostructural lanthanide-based 3D metal–organic frameworks (Ln-MOFs), [Ln53-OH)6(TZI)3(DMA)1.5(H2O)9.5]·DMA [Ln = Gd (1) and Dy (2), H3TZI = 5-(1H-tetrazol-5-yl)isophthalic acid], have been synthesized and structurally and magnetically characterized. In 1 and 2, the pentanuclear clusters with mixed (μ3-OH)(μ2-carboxylate) bridges are connected into 1D chains by μ2-H2O bridges, and then these chains are linked into 3D structures by the TZI ligands. The magnetic study suggests that 1 shows significant cryogenic magnetocaloric effects (−ΔSm = 41.3 J kg−1 K−1, ΔH = 70 kOe, 2.5 K), whereas 2 exhibits slow relaxation of magnetization.

Graphical abstract: 3D Ln-MOFs containing pentanuclear clusters exhibiting magnetic refrigeration and slow magnetic relaxation

Supplementary files

Article information

Article type
Paper
Submitted
12 Apr 2017
Accepted
01 Jun 2017
First published
01 Jun 2017

CrystEngComm, 2017,19, 3660-3665

3D Ln-MOFs containing pentanuclear clusters exhibiting magnetic refrigeration and slow magnetic relaxation

F. Liu, H. Huang, W. Gao, X. Zhang and J. Liu, CrystEngComm, 2017, 19, 3660 DOI: 10.1039/C7CE00698E

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