144801 20260217205610.0 doi 10.1039/d4ta03835e sideral 139488 ART-2024-139488 eng Li, Zhen Multifunctional self-refrigerated multivariate {GdLn} (Ln = Dy, Tb, Tb/Eu) metal–organic frameworks 2024 Access copy available to the general public Unrestricted Multivariate metal–organic frameworks (MOFs) containing multiple lanthanide ions present a compelling avenue for developing versatile materials with tailored properties. In this work, we synthesized “self-refrigerated” multifunctional carborane-based MOFs of formula unit {[(GdLn)3(mCB-L)4(NO3)(DMF)x]n·Solv} strategically combining Gd3+ ions, known for their ability to achieve large magnetocaloric effects (MCE), with various lanthanides (Ln = Dy, Tb, Eu, Tb/Eu) intended to act as Single Molecule Magnet (SMM) or/and luminescent units. The intricate magnetic, thermal, and optical properties of these multivariate Ln-MOFs were unraveled through a comprehensive characterization employing dc and ac magnetometry, X-ray Absorption Spectroscopy (XAS), X-ray Magnetic Circular Dichroism (XMCD), and luminescence measurements. Element-selective XAS-XMCD technique proved instrumental in elucidating the magnetic properties of the individual lanthanides, and their contribution to the macroscopic properties of the MOFs. We demonstrate that Gd1.5Ln1.5 (Ln = Tb, Dy) MOFs exhibit multifunctionality, incorporating MCE, field-induced magnetic relaxation dominated by the anisotropic ion, and green emission for Ln = Tb. Conversely, Gd1.5Ln1.5 (Ln = Eu, Eu/Tb) MOFs display MCE, field-induced SMM behavior associated with Gd, and red/yellow luminescent emission for Ln = Eu and Eu/Tb substitutions, respectively. Our findings significantly contribute to our understanding of “complex magnetic molecular materials” and set a pathway for the design of multifunctional multi-lanthanide MOFs endowed with tailored properties for various technological applications. info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S info:eu-repo/grantAgreement/ES/DGA-FSE/E12-23R-RASMIA info:eu-repo/grantAgreement/ES/MICINN/PID2022-136892NB-I00 info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00 info:eu-repo/semantics/openAccess by-nc https://creativecommons.org/licenses/by-nc/4.0/deed.es 9.5 2024 CHEMISTRY, PHYSICAL 33 / 185 = 0.178 2024 Q1 T1 MATERIALS SCIENCE, MULTIDISCIPLINARY 63 / 461 = 0.137 2024 Q1 T1 ENERGY & FUELS 29 / 182 = 0.159 2024 Q1 T1 2.462 2024 Chemistry (miscellaneous) 2024 Q1 Renewable Energy, Sustainability and the Environment 2024 Q1 Materials Science (miscellaneous) 2024 Q1 16.7 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Arauzo, Ana Universidad de Zaragoza (orcid)0000-0002-5999-341X Roscini, Claudio Planas, José Giner Bartolomé, Elena 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 12, 33 (2024), 21971-21986 J. mater. chem. A Journal of Materials Chemistry A 2050-7488 3995265 http://zaguan.unizar.es/record/144801/files/texto_completo.pdf Versión publicada 2760242 http://zaguan.unizar.es/record/144801/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:144801 articulos driver 2026-02-17-20:48:33 ARTICLE