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oai:docta.ucm.es:20.500.14352/921382025-03-18T15:47:30Zcom_20.500.14352_14col_20.500.14352_15

Luminescent and Sublimable Binaphthyl-Based Field-Induced Lanthanide Single-Molecule Magnets Mattei, Carlo Andrea Delouche, Thomas Lefeuvre, Bertrand Dallon-Cordier, Marie Lalli, Claudia Cador, Olivier Abad Galán, Laura Riobé, François Maury, Olivier Bouit, Pierre-Antoine Pointillart, Fabrice 546 Química inorgánica (Química) 2303 Química Inorgánica The association of the [Ln(hfac)3(H2O)2] metallic building blocks with the new ligand [1,1’-binaphthalene]-8,8’-diylbis(diphenylphosphine oxide) (L) led to the formation of three mononuclear complexes of formula [Ln(hfac)3(L)] (LnIII = Eu (1), Dy (2) and Yb (3)). The mononuclear character of the compounds is due to the bidentate coordination mode adopted by L to link the metal. L allows the observation of the characteristic visible 5D0  7FJ (J = 0-4) EuIII- and near infrared 2F5/2  2F7/2 YbIII- emissions while 2 is only weakly emissive due to the mismatch between the energy positions of the triplet excited state of the ligand and DyIII emissive state. The magnetic data reveal a field-induced Single-Molecule Magnet (SMM) behavior for 2 and 3 with an efficient suppression of the Quantum Tunneling of the Magnetization (QTM). The slow magnetic relaxation occurs through a Raman process while the Orbach contribution is discarded as confirmed by the correlation with the MJ states energy splitting provided by the luminescence spectrum of 3 Depto. de Química Inorgánica Fac. de Ciencias Químicas TRUE pub 2024-01-09T19:03:15Z 2024-01-09T19:03:15Z 2022 journal article AM https://hdl.handle.net/20.500.14352/92138 2604-0794 10.28954/2022.csq.06.001 eng Pointillart, Fabrice, et al. «Luminescent and Sublimable Binaphthyl-Based Field-Induced Lanthanide Single-Molecule Magnets». Chemistry Squared, junio de 2022. https://doi.org/10.28954/2022.csq.06.001. Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ open access application/pdf