Frontispiece: Controlled Heterometallic Composition in Linear Trinuclear [LnCeLn] Lanthanide Molecular Assemblies

Velasco, Verónica; Barrios, Leoní A.; Schütze, Mike; Roubeau, Olivier; Luis, Fernando; Teat, Simon J.; Aguilà, David; Aromı́, Guillem

doi:10.1002/chem.201986762

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“…[ 44–46 ] At present, great efforts are being made to develop molecular systems coordinating different RE ions, as their combination can be used in many applications, for example, for anticounterfeiting, [ 47 ] as thermometric probes, [ 48,49 ] to improve up‐conversion efficiency, [ 50 ] to modify the color or brightness of emission in luminescent systems, [ 51,52 ] to produce contrast agents, [ 53 ] or in the field of quantum computing, for the realization of qubits and qugates, [ 54–56 ] spin valves, [ 57 ] or to perform quantum error correction protocols. [ 58,59 ] In some of the above applications, the coexistence of RE cations of significantly varying sizes is of outmost importance. This achievement remains elusive for MOFs, and has so far been limited to discrete complexes, wherein linkers with distinct coordination pockets—a smaller one and a larger one—are employed.…”

Section: Introductionmentioning

confidence: 99%

A Metal‐Organic Framework Incorporating Eight Different Size Rare‐Earth Metal Elements: Toward Multifunctionality À La Carte

Light

et al. 2023

Adv Funct Materials

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Multi‐metallic multivariate (MTV) rare earth (RE) metal−organic frameworks (MOFs) are of interest for the development of multifunctional materials, however examples with more than three RE cations are rare and obstructed by compositional segregation during synthesis. Herein, this work demonstrates the synthesis of a multi‐metallic MTV RE MOF incorporating two, four, six, or eight different RE ions with different sizes and in nearly equimolar amounts and no compositional segregation. The MOFs are formed by a combination of RE cations (La, Ce, Eu, Gd, Tb, Dy, Y, and Yb) and a 1,7‐di(4‐carboxyphenyl)‐1,7‐dicarba‐closo‐dodecaborane (mCB‐L) linker. The steric bulkiness and acidity of mCB‐L is crucial for the incorporation of different size RE ions into the MOF structure. Demonstration of the incorporation of all RE cations is performed via compositional and structural characterization. The more complex MTV MOF, including all eight RE ions (mCB‐8RE), are also characterized using optical, thermal, and magnetic techniques. Element‐selective X‐ray absorption spectroscopy and X‐ray Magnetic Circular Dichroism measurements allow us to characterize spectroscopically each of the eight RE ions and determine their magnetic moments. This work paves the way for the investigation of MTV MOFs with the possibility to combine RE ions à la carte for diverse applications.

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Section: Introductionmentioning

confidence: 99%

A Metal‐Organic Framework Incorporating Eight Different Size Rare‐Earth Metal Elements: Toward Multifunctionality À La Carte

Light

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

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Frontispiece: Controlled Heterometallic Composition in Linear Trinuclear [LnCeLn] Lanthanide Molecular Assemblies

Cited by 1 publication

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A Metal‐Organic Framework Incorporating Eight Different Size Rare‐Earth Metal Elements: Toward Multifunctionality À La Carte

A Metal‐Organic Framework Incorporating Eight Different Size Rare‐Earth Metal Elements: Toward Multifunctionality À La Carte

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