采用水热法以己二酸(adipic acid)和草酸(oxalic acid)作为混合羧酸配体与稀土Eu3+反应形成一种新型的配位聚合物(Eu2 (ox)2 (ad)(H2O)2),通过单晶X射线衍射分析仪和荧光光谱分析仪对其结构、荧光性质和荧光寿命等进行了表征.单晶X射线衍射结果表明:该化合物属于三斜晶系,P-1空间群,a=0.84908(11) nm,b=0.90177(11) nm,c=1.09021(14) nm,α=92.086(2)°,β=91.313(2)°,γ=117.488(2)°.荧光光谱表明:在394 nm的紫外光激发下,样品在617 nm处有一红色特征发射峰,对应于Eu3的5 D0→7F2跃迁.
The new europium (Ⅲ) coordination polymers formulated as Eu2 (ox) 2 (ad) (H2O) 2 (H2ox =oxalic acid,H2 ad =adipic acid) were synthesized from the self-assembly of lanthanide ions Eu3 + with flexible oxalic and adipic acid ligands.The structure,fluorescence spectra and the fluorescence lifetime were characterized by X-ray single crystal diffraction analyzer and fluorescence spectrum analyzer,respectively.Single crystal X-ray diffraction results showed that the compound belongs to triclinic crystal system,space group P-1,a =0.84908 (11) nm,b =0.90177 (11)nm,c =1.09021 (14) nm,α =92.086 (2) °,β =91.313 (2) °,γ=117.488 (2) °.Fluorescence spectrum showed that the sample had a characteristic red emission peak at 617 nm when excited by 394 nm,which is corresponding to the 5D0→7F2 transition of Eu3+.
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