Gao Xiuting, Liu Mengying, Lei Mingyuan, Kong Yuxia, Xu Xinjiang, Zhang Qingfu
College of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong 252059, China.
Key Laboratory of Evidence Identification in Universities of Shandong Province, Shandong University of Political Science and Law, Jinan, Shandong 250014, China.
Talanta. 2024 Sep 1;277:126303. doi: 10.1016/j.talanta.2024.126303. Epub 2024 May 22.
The detection of antibiotics and pesticides are of great significance since their residues threaten the health of human beings by accumulation. However, most traditional solid chemical sensors are suffer from the limitations of low sensitivity and economic practicability because of the aggregating nature and unstable of solid sensors. Herein, a new luminescent sensor 1@PMMA (1, [(ZnL)·HO] (HL = 5-(4-(pyridin-4-yl)benzamido)benzene-1,3-dioic acid); PMMA = poly(methyl methacrylate)) was successfully prepared. Notably, the polymer matrix provided the chemical protection for MOF particles. The as fabricated 1@PMMA was stable in milk, honey and egg as well as exhibited strong blue emission under ultraviolet light irradiation, which can act as luminescent probe for detecting antibiotics and pesticides. More interestingly, 1@PMMA exhibited visual, real-time and recyclable detection of antibiotics ornidazole (ODZ) and pesticides 2,6-dichloro-4-nitrobenzenamine (DCN) in real food samples. This work shows that the luminescent MOF-based mixed matrix membranes could be applied as good candidates for sensing analytes in practical application.
抗生素和农药的检测具有重要意义，因为它们的残留会通过积累威胁人类健康。然而，由于固体传感器的聚集性质和不稳定性，大多数传统的固体化学传感器存在灵敏度低和经济实用性差的局限性。在此，成功制备了一种新型发光传感器1@PMMA（1，[(ZnL)·HO]（HL = 5-(4-(吡啶-4-基)苯甲酰胺基)苯-1,3-二甲酸）；PMMA = 聚甲基丙烯酸甲酯）。值得注意的是，聚合物基质为金属有机框架（MOF）颗粒提供了化学保护。所制备的1@PMMA在牛奶、蜂蜜和鸡蛋中稳定，并且在紫外光照射下表现出强烈的蓝色发射，可作为检测抗生素和农药的发光探针。更有趣的是，1@PMMA在实际食品样品中对抗生素奥硝唑（ODZ）和农药2,6-二氯-4-硝基苯胺（DCN）表现出可视化、实时和可回收的检测。这项工作表明，基于发光MOF的混合基质膜可作为实际应用中传感分析物的良好候选材料。
