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oe1(光电查) - 科学论文

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?? 中文（中国） ▾

  • Magnetic and Luminescence Properties of Two Dinuclear Lanthanide Complexes with Butterfly-like Arrangement

    摘要： Two dinuclear lanthanide complexes with pentadentate ligand 3-[bis(pyridine-2-ylmethyl)amino]propane-1,2-diol (H2L), formulated as [Ln2(HL)2(NO3)2(H2O)2]·1.5NO3·0.5I [Ln = Tb (ZTU-1) and Eu (ZTU-2); ZTU = Zhaotong University] were synthesized and structurally characterized. ZTU-1 and ZTU-2 are isomorphous and feature a butterfly-like arrangement. The fluorescence properties of ZTU-1 and ZTU-2 are investigated and slow magnetic relaxation behavior is observed in ZTU-1.

    关键词： Lanthanides,Slow magnetic relaxation,Luminescence,Dinuclear lanthanide complex

    更新于2025-09-23 15:21:01

  • 3D Ln <sup>III</sup> -MOFs: displaying slow magnetic relaxation and highly sensitive luminescence sensing of alkylamines

    摘要： Six new 3D isomorphous lanthanide metal organic frameworks (Ln-MOFs), [Ln2(L)2(DMF)2(H2O)4]·H2O·DMF (Ln = Pr (1); Sm (2); Eu (3); Gd (4); Dy (5); Ho (6)); H3L = 5-(2-nitro-4-carboxylphenyl)isophthalic acid, have been solvothermally synthesized and characterized. Crystallographic studies revealed that these MOFs were isomorphous 3D frameworks in which the dinuclear units with double (μ-COO)2 bridges were interlinked by the L ligands. They represent the (3,6)-connected (42·6)(43·68·82·10·12) topology. The magnetic coupling through double carboxylate bridges is antiferromagnetic in Pr-MOF (1), Gd-MOF (4), Dy-MOF (5) and Ho-MOF (6). Furthermore, Dy-MOF (5) shows slow magnetic relaxation behaviors under zero dc field. The luminescence sensing experiments demonstrated that Eu-MOF (3) displayed highly selective, well-recyclable properties and a low detection limit for sensing alkylamines in water systems. The study of Ln-MOF sensing for alkylamines is very scarce.

    关键词： luminescence sensing,alkylamines,slow magnetic relaxation,3D LnIII-MOFs

    更新于2025-09-19 17:15:36