Recently, enough attention has been paid to the pollution and damage of antibiotics in water. Zn-metal organic frameworks (Zn-MOFs), as a novel kind of sensing material, have been tentatively developed a highly effective candidate to detect antibiotics in water. A series of Zn-MOFs material named {[Zn (bdc)(4,4′-bidpe)]·H₂O}_n (1), {[Zn₃ (bdc)₂ (tib)₂(HCOO)₂]·4(H₂O)·0.5(CH₂Cl₂)}_n (2), [Zn (bdc)(bidpa)]_n (3) were successfully constructed under the condition of solvothermal, using 4,4′-bis(imidazolyl)diphenyl ether (4,4′-bidpe), 1,3,5-tirs (1-imidazolyl)benzene (tib), 4,4′-bis(imidazolyl)diphenyl amino (4,4′-bidpa) and 1,4-benzenedicarboxylate (H₂bdc). Three complexes were characterized by X-ray single-crystal diffraction, elemental analysis, IR spectra and thermogravimetric (TG) analysis. Complex 1 has a three-dimensional (3D) framework that crystallizes in the triclinic system, Pī space group. Complex 2 crystallizes in the monoclinic system, C2/c space group featuring a 3-nodal (3,3,4)-connected network with point symbol of 2{8³}2{8⁶}{8.10²}. Complex 3 belongs to the tetragonal system, I4₁/acd space group with two-fold interpenetrating architecture. A linear pH sensing of complex 1 (I ​= ​1035.2 pH ​+ ​726.9) between the fluorescence intensity and pH values was achieved through the fluorescence quenching experiment in the acidic condition. The fluorescence quenching experimental results showed that complex 1 exhibits sensitive response to TC with detection limit of 3.72 ​× ​10⁻⁷ ​M based on its effective spectral overlap and adsorption preconcentration with tetracycline (TC).

最近，人们已经对水中抗生素的污染和破坏给予了足够的关注。锌金属有机骨架（Zn-MOFs）作为一种新型的传感材料，已经初步开发出一种检测水中抗生素的高效候选物。一系列名为{[Zn（bdc）（4,4'-bidpe）]·H ₂ O} _n（1），{[Zn ₃（bdc）₂（tib）₂（HCOO）₂ ]的Zn-MOFs材料。·4（H ₂ O）·0.5（CH ₂ Cl ₂）} _n（2），[Zn（bdc）（bidpa）] _n（3）在溶剂热条件下成功制备，使用4,4'-双（咪唑基）二苯醚（4,4'-bidpe），1,3,5-轮胎（1-咪唑基）苯（tib），4 4'-双（咪唑基）二苯基氨基（4,4'-bidpa）和1,4-苯二甲酸（H ₂ bdc）。通过X射线单晶衍射，元素分析，红外光谱和热重（TG）分析对三种配合物进行了表征。复合体1具有在三斜体系统P space空间群中结晶的三维（3D）框架。配合物2在单斜晶系系统C 2 / c空间群中结晶，该空间群具有3节点（3,3,4）连接的网络，其点符号为2 {8 ³ } 2 {8 ⁶ } {8.10 ²}。复数3属于四方体系，I 4 ₁ / acd空间群具有双重互穿结构。 通过在酸性条件下进行荧光猝灭实验，在荧光强度和pH值之间实现了对复合物1（I = 1035.2 pH + 726.9）的线性pH传感。荧光猝灭实验结果表明，由于配合物1具有 有效的光谱重叠和四环素（TC）的吸附预富集，因此它对TC表现出敏感的响应，检出限为3.72×10 ^-7 M.