One-dimensional channel-structured Eu-MOF for sensing small organic molecules and Cu2+ ion
One-dimensional channel-structured Eu-MOF for sensing small organic molecules and Cu2+ ion
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用于传感小有机分子和 Cu2 离子的一维通道结构 Eu-MOF
DOI：
10.1039/c3ta12270k
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发表时间：
2013-01-01
影响因子：
11.9
通讯作者：
Zhang, Hongjie
中科院分区：
文献类型：
--
作者：
Hao, Zhaomin;Song, Xuezhi;Zhang, Hongjie
在溶剂热条件下合成了两种新的稀土金属有机骨架Ln(FBPT)(H2O)(DMF)(FBPT=2‘-氟联苯-3，4’，5-三羧酸盐，Ln=Eu和Tb)。单晶X-射线衍射分析表明，这两个化合物以FBPT为有机连接物，具有相同的一维通道结构。本文选择Eu(FBPT)(H2O)(DMF)(EuL)作为发光测量的代表性样品。光致发光性质研究表明，EuL在紫外光激发下表现出红光发射，与Eu3+离子的D-5(0)-&Gt；F-7(J)(J=1-4)跃迁相对应。最有趣的是，当该化合物被浸泡在不同的有机溶剂和金属离子DMF溶液中时，它对有机小分子和Cu2+表现出高度的选择性和灵敏的传感。针对这一点，本文还讨论了一种可能的传感机制。
Two new lanthanide metal-organic frameworks Ln(FBPT)(H2O)(DMF) (FBPT = 2'-fluoro-biphenyl-3,4',5-tricarboxylate, Ln = Eu and Tb) were prepared under solvothermal conditions. Single crystal X-ray diffraction analyses reveal that the two compounds are isostructurally related with the same one-dimensional channel structure on the basis of FBPT as an organic linker. Herein, the Eu(FBPT)(H2O)(DMF) (EuL) is selected as a representative sample for luminescent measurements. Study of the photoluminescence properties reveals that the EuL exhibits red emission, corresponding to the D-5(0) -> F-7(J) (J = 1-4) transitions of the Eu3+ ion under UV light excitation. Most interestingly, when this compound was immersed in the different organic solvents and metal ion DMF solutions, it shows highly selective and sensitive sensing for small organic molecules and Cu2+ ions. In connection to this, a probable sensing mechanism was also discussed in this paper.