The electronic[Xe]4f^(13) configurations of Yb(Ⅲ)ions generate a variety of electronic energy levels,resulting in the fantastic optical and magnetic multifunctional properties of Yb(Ⅲ)complexes.Here,2-hydroxy-3-meth...The electronic[Xe]4f^(13) configurations of Yb(Ⅲ)ions generate a variety of electronic energy levels,resulting in the fantastic optical and magnetic multifunctional properties of Yb(Ⅲ)complexes.Here,2-hydroxy-3-methoxy benzoic acid(H_(2)MBA)was used to construct two dinuclear and one-dimensional Yb(Ⅲ)complexes namely[Yb_(2)(HMBA)_(2)(MBA)_(2)(DMF)_(2)(H_(2)O)_(2)]·6H_(2)O(1,DMF=N,N-dimethylformamide)and[NH_(4)][Yb(HMBA)_(4)](2).Fluorescence measurements reveal that H_(2)MBA can sensitize the characteristic near-infrared luminescence of Yb(Ⅲ).Magnetic susceptibility measurements show that the two Yb(Ⅲ)complexes are field-induced single-molecule magnets(SMMs)with anisotropy barriers of 18(1)cm^(-1) and 20(1)cm^(-1) for 1 and 2,respectively.The magnetism-luminescence-structure correlations as well as relaxation pathways are investigated by ab initio calculations and fluorescence spectrometry.展开更多
基金supported by the National Natural Science Foundation of China(No.21271052 and 21905062)the Science and Technology Program Foundation of Guangdong Province(No.2015A030313502)the First talent cultivation program of Guangzhou University(RP2020084).
文摘The electronic[Xe]4f^(13) configurations of Yb(Ⅲ)ions generate a variety of electronic energy levels,resulting in the fantastic optical and magnetic multifunctional properties of Yb(Ⅲ)complexes.Here,2-hydroxy-3-methoxy benzoic acid(H_(2)MBA)was used to construct two dinuclear and one-dimensional Yb(Ⅲ)complexes namely[Yb_(2)(HMBA)_(2)(MBA)_(2)(DMF)_(2)(H_(2)O)_(2)]·6H_(2)O(1,DMF=N,N-dimethylformamide)and[NH_(4)][Yb(HMBA)_(4)](2).Fluorescence measurements reveal that H_(2)MBA can sensitize the characteristic near-infrared luminescence of Yb(Ⅲ).Magnetic susceptibility measurements show that the two Yb(Ⅲ)complexes are field-induced single-molecule magnets(SMMs)with anisotropy barriers of 18(1)cm^(-1) and 20(1)cm^(-1) for 1 and 2,respectively.The magnetism-luminescence-structure correlations as well as relaxation pathways are investigated by ab initio calculations and fluorescence spectrometry.
