异核Ln(Na)‑MOFs(Ln=Tb、Dy、Ho)的晶体结构及对乙醛、Fe^(3+)、Cr_(2)O_(7)^(2-)的荧光传感和邻苯二酚的电化学传感

Heterometallic Ln(Na)‑MOFs(Ln=Tb,Dy,Ho):Crystal Structures,Luminescent Sensing for Acetaldehyde,Fe^(3+),Cr_(2)O_(7)^(2-),and Electrochemical Sensing for Catechol

在溶剂热条件下合成了3个新型三维微孔同构异核金属有机骨架Ln(Na)‑MOFs:{[LnNa(BDT)(H_(2)O)_(3)]·_(2)H_(2)O}n(Ln=Tb(1)、Dy(2)、Ho(3),H4BDT=3,5‑二(3',5'‑二羧基苯基)‑1H‑1,2,4‑三唑),并通过单晶X射线衍射、元素分析、热重分析和粉末X射线衍射技术对其进行表征。结构分析表明,Ln(Na)‑MOFs是具有相同的异核双金属单元的三维骨架结构。荧光研究表明,Tb(Na)‑MOF(1)可以荧光传感检测水中Fe^(3+)、Cr_(2)O_(7)^(2-)以及乙醛分子,具有较高的灵敏度和选择性,也可用于水中邻苯二酚的电化学检测。

Three new 3D microporous isostructural heterometallic metal organic frameworks Ln(Na)‑MOFs:{[LnNa(BDT)(H_(2)O)_(3)]·_(2)H_(2)O}n(Ln=Tb(1),Dy(2),Ho(3),H4BDT=3,5‑bis(3',5'‑dicarboxylphenyl)‑1H‑1,2,4‑triazole),have been synthesized under solvothermal condition,and characterized by single crystal X‑ray diffraction,elemental analysis,thermogravimetric analysis,and powder X‑ray diffraction.Structural analysis demonstrates that they possess the same 3D frameworks based on similar heteronuclear bimetallic units.Fluorescence studies show that Tb(Na)‑MOF(1)can detect Fe^(3+)ion,Cr_(2)O_(7)^(2-)anion,and acetaldehyde molecules with high sensitivity and selectivity by luminescent sensing,and can also be used for electrochemical detection of catechol in water.CCDC:2077995,1;2083696,2;2083700,3.