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萘咪唑类稀土配合物的晶体结构和荧光性质(英文) 被引量:1

Crystal Structures and Near-IR Luminescence of Naphthoimidazole Lanthanide Complexes
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摘要 通过2-(2’-羟基-3’-甲氧基)萘咪唑(HL)和Ln(NO)3·6H2O反应,合成了4种单核稀土配合物[Ln(HL)2(NO3)3]·CH2Cl2(Ln=Sm(1),Eu(2),Tb(3))和[Ln(HL)2(NO3)2(CH3OH)]NO3·CH3OH(Ln=Yb(4))。X射线单晶衍射分析表明配合物1-4均通过配体萘环间的π-π作用呈现蝴蝶状结构。荧光性质表明仅有配合物4显示Yb3+稀土离子的特征发光,固态和在乙腈溶液中的荧光寿命分别为8.27μs和4.40μs。 Self-assembly reactions of 2-(2'-hydroxyphenyl-3'-methoxyl)naphthoimidazole (HL) and Ln(NO)3·6H2O afford four mononuclear lanthanide complexes [Ln(HL)2(NO3)3]· CH2Cl2 (Ln=Sm (1), Eu (2), Tb (3)) and [Ln(HL)2 (NO3)/(CH3OH)]NO3 ·CH3OH (Ln=Yb (4)). X-ray crystallographic analysis reveals that complexes 1-4 feature "butterfly-like" structure attributed to or-or interactions of the naphthalene rings of two ligands. Luminescent analysis reveals that only complex 4 exhibit essential NIR luminescence of Yb3+ ion with lifetime of 8.27 μs in solid and 4.40 μs in CH3CN (c=1×10-5 mol·L-1). CCDC: 1441075, 1; 1441076, 2; 1441077, 3; 1441080, 4.
出处 《无机化学学报》 SCIE CAS CSCD 北大核心 2016年第11期2063-2068,共6页 Chinese Journal of Inorganic Chemistry
基金 国家自然科学基金(No.51402092,51272069,21601132)资助项目
关键词 合成 结构 镧系配合物 近红外发光 synthesis structure lanthanide complexes NIR luminescence
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