Fabrice Pointillart, Pierre‐Antoine Bouit, F. Riobé, Carlo Andrea Mattei, Thomas Delouche, B. Lefeuvre, Marie Dallon-Cordier, C. Lalli, O. Cador, Laura Abad Galán, O. Maury
{"title":"Luminescent and Sublimable Binaphthyl-Based Field-Induced Lanthanide Single-Molecule Magnets","authors":"Fabrice Pointillart, Pierre‐Antoine Bouit, F. Riobé, Carlo Andrea Mattei, Thomas Delouche, B. Lefeuvre, Marie Dallon-Cordier, C. Lalli, O. Cador, Laura Abad Galán, O. Maury","doi":"10.28954/2022.csq.06.001","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":92762,"journal":{"name":"Chemistry squared","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry squared","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.28954/2022.csq.06.001","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
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.