3D LnIII-MOFs: displaying slow magnetic relaxation and highly sensitive luminescence sensing of alkylamines
| Autor: | Hong Huang, Ai-Mei Zhou, Jieping Liu, Xiu-Mei Zhang, Wei Gao |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Lanthanide
Materials science 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Inductive coupling 0104 chemical sciences Isophthalic acid Crystallography chemistry.chemical_compound chemistry Antiferromagnetism General Materials Science Metal-organic framework Carboxylate 0210 nano-technology Luminescence Science technology and society |
| Zdroj: | CrystEngComm. 21:694-702 |
| ISSN: | 1466-8033 |
| DOI: | 10.1039/c8ce01762j |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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