Pure and mixed {Nd/Yb} carborane-based metal–organic frameworks integrating slow magnetic relaxation, magnetocaloric effect and NIR emission
Liu, Xiaoming ; Arauzo, Ana (Universidad de Zaragoza) ; Fuertes, Sara ; Giner Planas, José ; Bartolomé, Elena
Resumen: Multi-lanthanide metal–organic frameworks (MOFs) offer a flexible route for designing multifunctional materials. Here we report a carborane-based isostructural series of MOFs of formula {[(NdyYb1−y)3(mCB-L)4(NO3)(DMF)x]n·Solv}, including the homometallic Nd (y = 1) and Yb (y = 0) compounds and a mixed Nd/Yb analogue (y = 0.44). Magnetic, magnetocaloric and near-infrared (NIR) optical properties were investigated by dc/ac magnetometry, X-ray absorption spectroscopy (XAS), X-ray magnetic circular dichroism (XMCD), and photoluminescence. Nd3+ and Yb3+ yield MOFs combining slow relaxation of the magnetization (U/kB ∼ 19 K), cryogenic magnetocaloric response (−ΔSm ∼ 1.6 R at 5 T, 1.8 K) and ion-centered NIR luminescence. Notably, the mixed Nd/Yb MOF further extends this multifunctionality by exhibiting dual NIR emission at 998 nm and 1060 nm arising from partial Nd → Yb energy transfer. These results underscore carborane ligands as effective blocks for engineering multi-lanthanide frameworks, and highlight {Nd/Yb} MOFs as multifunctional materials for quantum technologies, optical communication, and cryogenic cooling.
Idioma: Inglés
DOI: 10.1039/d5tc03820k
Año: 2026
Publicado en: Journal of materials chemistry. C (2026), [14 pp.]
ISSN: 2050-7526
Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E17-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-136892NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2021-122869NB-I00
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
Dataset asociado: Supplementary Information ( https://www.rsc.org/suppdata/d5/tc/d5tc03820k/d5tc03820k1.pdf)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2026-05-05-13:36:41)
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Idioma: Inglés
DOI: 10.1039/d5tc03820k
Año: 2026
Publicado en: Journal of materials chemistry. C (2026), [14 pp.]
ISSN: 2050-7526
Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E17-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-136892NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PID2021-122869NB-I00
Tipo y forma: Article (Published version)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
Dataset asociado: Supplementary Information ( https://www.rsc.org/suppdata/d5/tc/d5tc03820k/d5tc03820k1.pdf)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2026-05-05-13:36:41)
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Record created 2026-05-05, last modified 2026-05-05