Two isostructural Ln-MOFs containing triazole groups as Luminescent Probes for Efficient Sensing of NACs and Fe3+
Two isostructural Ln-MOFs containing triazole groups as Luminescent Probes for Efficient Sensing of NACs and Fe3+
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DOI：
10.1016/j.ica.2022.121376
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发表时间：
2022-12
影响因子：
2.8
通讯作者：
Jia-Xing Sun;Yan Xi;Lu Gao;Meng Hu;Wei Liu;Enhui Ma;Rong-Hsing Huang;W. Qin;Genhua Wu-Genhua
中科院分区：
文献类型：
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作者：
Jia-Xing Sun;Yan Xi;Lu Gao;Meng Hu;Wei Liu;Enhui Ma;Rong-Hsing Huang;W. Qin;Genhua Wu-Genhua
通过溶剂热反应成功合成了两种新型同构3D镧系金属有机框架（Ln-MOF），[Ln2(L)3(H2O)2]·2H2O·2DMF（1-Ln，Ln=Eu3+和Tb3+，H2L=5-三唑间苯二甲酸），其通道具有不配位的三唑基团。不配位的三唑基团作为保留的主客体结合位点来调节Ln3+离子的发光强度。发光研究表明，1-Eu和1-Tbas荧光探针通过发光猝灭过程对DMF体系中的硝基芳香族化合物(NACs)和Fe3+表现出高灵敏度和优异的选择性。通过PXRD、DFT理论计算、XPS、UV-vis研究了猝灭机制并进行了详细讨论。
Two new isostructural 3D lanthanide metal–organic frameworks (Ln-MOFs), [Ln2(L)3(H2O)2]·2H2O·2DMF (1-Ln, Ln = Eu3+and Tb3+, H2L = 5-triazole isophthalic acid) with uncoordinated triazole groups decorating the channels were successfully synthesized via solvothermal reaction. The uncoordinated triazole groups act as reserved host–guest binding sites to adjust the luminescence intensity of the Ln3+ion. Luminescence studies reveal that1-Euand1-Tbas fluorescent probes both exhibit high sensitivities and excellent selectivities towards nitroaromatics (NACs) and Fe3+in DMF system by luminescence quenching process. The quenching mechanisms were investigated through PXRD, DFT theory calculation, XPS, UV–vis and discussed in details.