The Role of Blue‐Emissive 1,8‐Naphthalimidopyridine
<i>N</i>
‐Oxide in Sensitizing Eu
<sup>III</sup>
Photoluminescence in Dimeric Hexafluoroacetylacetonate Complexes
作者:Zhao Wang、NanNan Liu、Hongfeng Li、Peng Chen、Pengfei Yan
DOI:10.1002/ejic.201700019
日期:2017.4.18
new fluorescence molecules incorporating coordinated pyridine N‐oxide (PyNO) and the blue‐emitting 1,8‐naphthalimide (NI) chromophores, 4‐(1,8‐naphthalimido)pyridine N‐oxide (4‐NIPyNO) and 3‐(1,8‐naphthalimido)pyridine N‐oxide (3‐NIPyNO), are designed and used as ancillary ligands for constructing mixed‐ligand tris(β‐diketonate) lanthanide complexes, Ln2(hfa)6(4‐NIPyNO)2 and Ln2(hfa)6(3‐NIPyNO)3 (Ln
两个新的荧光分子结合了配位吡啶N-氧化物(PyNO)和发蓝色光的1,8-萘二甲酰亚胺(NI)生色团,4-(1,8-萘二甲酰亚胺)吡啶N-氧化物(4-NIPyNO)和3-( 1,8-萘二甲酰亚胺基)吡啶N-氧化物(3-NIPyNO)被设计用作构建配体三(β-二酮酸)镧系元素复合物Ln 2(hfa)6(4-NIPyNO)2和Ln 2(hfa)6(3-NIPyNO)3(Ln = Eu,Gd; hfa =六氟乙酰丙酮)X射线单晶衍射晶体学分析表明,所有配合物均采用二聚双核结构。在每种情况下,两个Ln IIILn(hfa)3部分的离子被4-NIPyNO和3-NIPyNO的N-氧化物基团的氧原子桥接。发光量子产率实验表明,辅助配体的引入导致Eu III离子具有比水合Eu(hfa)3(H 2 O)2发光增强约13倍的发光增强。进行了详细的光物理测定,以深入了解NIPyNO配体在增强Eu III中的作用发