A Versatile Tripodal Ligand for Sensitizing Lanthanide (LnIII) Ions and Color Tuning
A Versatile Tripodal Ligand for Sensitizing Lanthanide (LnIII) Ions and Color Tuning
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DOI：
10.3390/chemistry3010011
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发表时间：
2021-01
期刊：
影响因子：
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通讯作者：
Rodney A. Tigaa;Raul E. Ortega;Xin-Rong Lin;G. Strouse
中科院分区：
文献类型：
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作者：
Rodney A. Tigaa;Raul E. Ortega;Xin-Rong Lin;G. Strouse
镧系元素（LnIII）离子与三足配体成功螯合并致敏。铕（III） （EuIII）和铽（TbIII）配合物的绝对发射效率均为~3%，而铈（III） （CeIII）配合物的绝对发射效率高达54%。早期镧系元素（CeIII）和中期镧系元素（EuIII和TbIII）的发射量子产率差异分别归因于它们的d-f和f-f性质。尽管EuIII配合物的量子产率很低，但残余配体荧光和红色EuIII发射的结合导致了具有国际发光委员会（CIE）坐标（0.258,0.242）的蓝白色材料。因此，该配体的金属配合物可用于制备单组分白光发光材料。
Lanthanide (LnIII) ions were successfully chelated and sensitized with a tripodal ligand. The absolute LnIII-centered emission efficiencies were ~3% for both the europium(III) (EuIII) and terbium (TbIII) complexes and up to 54% for the cerium(III) (CeIII) complex. The differences in emission quantum yields for the early lanthanides (CeIII) and the mid lanthanides (EuIII and TbIII) were attributed to their d–f and f–f nature, respectively. Despite the low quantum yield of the EuIII complex, the combination of the residual ligand fluorescence and the red EuIII emission resulted in a bluish-white material with the Commission Internationale de l’Eclairage (CIE) coordinates (0.258, 0.242). Thus, metal complexes of the ligand could be used in the generation of single-component white-light-emitting materials.