000171053 001__ 171053
000171053 005__ 20260505142650.0
000171053 0247_ $$2doi$$a10.1039/d5tc03820k
000171053 0248_ $$2sideral$$a149142
000171053 037__ $$aART-2026-149142
000171053 041__ $$aeng
000171053 100__ $$aLiu, Xiaoming
000171053 245__ $$aPure and mixed {Nd/Yb} carborane-based metal–organic frameworks integrating slow magnetic relaxation, magnetocaloric effect and NIR emission
000171053 260__ $$c2026
000171053 5060_ $$aAccess copy available to the general public$$fUnrestricted
000171053 5203_ $$aMulti-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.
000171053 536__ $$9info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S$$9info:eu-repo/grantAgreement/ES/DGA/E12-23R$$9info:eu-repo/grantAgreement/ES/DGA/E17-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-136892NB-I00$$9info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00$$9info:eu-repo/grantAgreement/ES/MICIU/PID2021-122869NB-I00
000171053 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000171053 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000171053 700__ $$0(orcid)0000-0002-5999-341X$$aArauzo, Ana$$uUniversidad de Zaragoza
000171053 700__ $$0(orcid)0000-0003-1812-3175$$aFuertes, Sara
000171053 700__ $$aGiner Planas, José
000171053 700__ $$aBartolomé, Elena
000171053 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000171053 773__ $$g(2026), [14 pp.]$$pJ. mater. chem. C$$tJournal of materials chemistry. C$$x2050-7526
000171053 787__ $$tSupplementary Information$$whttps://www.rsc.org/suppdata/d5/tc/d5tc03820k/d5tc03820k1.pdf
000171053 8564_ $$s4891866$$uhttps://zaguan.unizar.es/record/171053/files/texto_completo.pdf$$yVersión publicada
000171053 8564_ $$s2756896$$uhttps://zaguan.unizar.es/record/171053/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000171053 909CO $$ooai:zaguan.unizar.es:171053$$particulos$$pdriver
000171053 951__ $$a2026-05-05-13:36:41
000171053 980__ $$aARTICLE