OALib Journal期刊
ISSN: 2333-9721
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异金属3d-4f希夫碱配合物的制备、晶体结构及近红外发光性能
DOI: 10.1360/972013-1217, PP. 1621-1624
Keywords: 异金属3d-4f配合物,水杨醛型希夫碱,对苯二甲酸,自组装,晶体结构,稀土荧光
Abstract:
以水杨醛型希夫碱N,N’-双(5-溴-3-甲氧基-水杨醛)-1,3-乙三胺(H2L)为配体,合成了3个3d-Yb配合物[ZnYbL(NO3)2(OAc)](1),[Zn4Yb2L4(1,4-BDC)2]·[Yb(NO3)5(H2O)](2)和[CuYbL(NO3)2(OAc)(CH3OH)](3).六核配合物2是由二核配合物1和对苯二甲酸(1,4-BDC)反应而成,晶体结构表明,桥联配体对苯二甲酸将2个三核Zn2Yb单元连结起来,构筑了含更多金属核数的配合物2.荧光性质研究表明,在配合物1和2中,由Zn/L组成的发色基团对Yb3+离子的近红外发光有敏化作用,配合物2的稀土荧光发射略强于配合物1.在配合物3中,Cu2+离子的存在对稀土荧光具有淬灭作用.
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