Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, Xi'an Key Laboratory of Functional Supramolecular Structure and Materials, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, P. R. China.
Inorg Chem. 2023 Mar 20;62(11):4735-4744. doi: 10.1021/acs.inorgchem.3c00249. Epub 2023 Mar 4.
In recent years, the irrational use of antibiotics has become very widespread. It is necessary to regulate this phenomenon through antibiotic detection. In this work, a series of isomorphic Ln-MOFs (Ln = Tb and Eu) were synthesized from 1,3,5-tri(4-carboxyphenyl)benzene (HL) and Ln by the solvothermal method for the first time. A series of with different luminescence were doped by changing the molar ratio of Tb and Eu. Ln forms a 4-connected 2D network structure through self-assembly with fully deprotonated L. It shows good chemical stability in water, and its luminescence is not affected by aqueous solutions with different pH values. demonstrates rapid and sensitive detection capabilities for MDZ and TET with good recyclability and low detection limits (10). In order to increase the practicability of , two portable sensors have been prepared, in which the fluorescent film () has a detection limit of 10, and the sensitivity is only less than 10% of the titration results. A portable fluorescent test paper can reach the detection limit of 14.7 ppm. This study provides a new idea for the application of stable multifunctional materials in the field of fluorescence sensing.
近年来，抗生素的不合理使用已经变得非常普遍。有必要通过抗生素检测来规范这种现象。在这项工作中，首次通过溶剂热法从 1,3,5-三（4-羧基苯基）苯（HL）和 Ln 合成了一系列同构的 Ln-MOFs（Ln = Tb 和 Eu）。通过改变 Tb 和 Eu 的摩尔比，掺杂了一系列具有不同发光性能的 。Ln 通过与完全去质子化的 L 自组装形成具有 4 连接二维网络结构。它在水中具有良好的化学稳定性，其发光不受不同 pH 值水溶液的影响。 对 MDZ 和 TET 具有快速、灵敏的检测能力，具有良好的可重复性和低检测限（10）。为了提高 的实用性，已经制备了两种便携式传感器，其中荧光膜（）的检测限为 10，灵敏度仅低于滴定结果的 10%。便携式荧光试纸可以达到 14.7 ppm 的检测限。这项研究为稳定多功能材料在荧光传感领域的应用提供了新的思路。
