Multifunctional Lanthanide-Based Metal-Organic Frameworks Derived from 3-Amino-4-hydroxybenzoate: Single-Molecule Magnet Behavior, Luminescent Properties for Thermometry, and CO2 Adsorptive Capacity
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2022-08Autor
Echenique Errandonea, Estitxu
Mendes, Ricardo F.
Figueira, Flavio
Choquesillo Lazarte, Duane
Cepeda Ruiz, Javier
Ananias, Duarte
Rodríguez Diéguez, Antonio
Almeida Paz, Filipe A.
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Inorganic Chemistry 61(33) : 12977-12990 (2022)
Resumen
Herein, we describe and study a new family of isostructural multifunctional metal-organic frameworks (MOFs) with the formula {[Ln(5)L(6)(OH)(3)(DMF)(3)]center dot 5H(2)O} n (where (H2L) is 3-amino-4-hydroxybenzoic acid ligand) for magnetism and photoluminescence. Interestingly, three of the materials (Dy-, Er-, and Yb-based MOFs) present singlemolecule magnet (SMM) behavior derived from the magnetic anisotropy of the lanthanide ions as a consequence of the adequate electronic distribution of the coordination environment. Additionally, photoluminescence properties of the ligand in combination with Eu and Tb counterparts were studied, including the heterometallic Eu-Tb mixed MOF that shows potential as ratiometric luminescent thermometers. Finally, the porous nature of the framework allowed showing the CO2 sorption capacity.