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Issue 10, 2013
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Structures, luminescent and magnetic properties of six lanthanide–organic frameworks: observation of slow magnetic relaxation behavior in the DyIII compound

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Abstract

Six novel three-dimensional (3D) lanthanide metal–organic frameworks (LnMOFs), {[Ln2(ispc)3(H2O)3mH2O}n (Ln = Pr (1, m = 5); Eu (2, m = 5); Gd (3, m = 4); Tb (4, m = 5); Dy (5, m = 5) and Ho (6, m = 4)), ispc = 3-(4-carboxyphenylsulfonyloxy)-4-methoxybenzoic anion) have been synthesized under hydrothermal conditions. Single crystal X-ray diffraction revealed they are isostructural and crystallize in the triclinic crystal system, space group P[1 with combining macron]. The investigations on luminescent properties and lifetimes of 2 (EuIII), 4 (TbIII), and 5 (DyIII) exhibit characteristic emissions of EuIII, TbIII and DyIII ions and the corresponding luminescent lifetimes are 0.14 ms, 9.93 μs and 1.25 ms, respectively. The different luminescent intensities and lifetimes among them were further discussed. Furthermore, magnetic studies of 1–6 reveal that 3–6 exhibit ferromagnetic coupling, and 5 (DyIII) exhibits remarkably slow magnetic relaxation behavior with the energy barrier ΔE/kB = 49.2 K.

Graphical abstract: Structures, luminescent and magnetic properties of six lanthanide–organic frameworks: observation of slow magnetic relaxation behavior in the DyIII compound

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Publication details

The article was received on 09 Oct 2012, accepted on 25 Nov 2012 and first published on 27 Nov 2012


Article type: Paper
DOI: 10.1039/C2DT32390G
Citation: Dalton Trans., 2013,42, 3587-3596
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    Structures, luminescent and magnetic properties of six lanthanide–organic frameworks: observation of slow magnetic relaxation behavior in the DyIII compound

    Y. Hou, G. Xiong, B. Shen, B. Zhao, Z. Chen and J. Cui, Dalton Trans., 2013, 42, 3587
    DOI: 10.1039/C2DT32390G

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