Li Jiaxing, Sun Yuanqiang, Li Zhaohui, Yang Ran, Qu Lingbo
College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/ Institute of Cotton Research of CAAS, Food Laboratory of Zhongyuan, Zhengzhou University, Zhengzhou 450001, China.
College of Chemistry, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, National Key Laboratory of Cotton Bio-breeding and Integrated Utilization/ Institute of Cotton Research of CAAS, Food Laboratory of Zhongyuan, Zhengzhou University, Zhengzhou 450001, China; Key Laboratory of Food Safety Quick Testing and Smart Supervision Technology for State Market Regulation, Henan Province Food Inspection Research Institute, Zhengzhou 450001, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2025 Feb 5;326:125188. doi: 10.1016/j.saa.2024.125188. Epub 2024 Oct 1.
How to achieve good dispersion of MOFs (metal-organic frameworks) is the key to its application in many fields. In our work, a novel MOF nanocomposite TBAPy-Yb was synthesized by solvothermal approach with TBAPy [1,3,6,8-tetrakis(p-benzoic acid)pyrene)] as the organic ligand and lanthanide metal ions as the metal ion source. Due to the coordination between phosphate and TBAPy-Yb, TBAPy-Yb had excellent dispersion in phosphate buffer and induced strong fluorescence emission in 435 nm. Gsp (gossypol) could regularly and instantly quench the induced fluorescence of TBAPy-Yb in the range of 10.0 to 70.0 μM and cause an obvious color change from blue to colorless. The detection limit was as low as 4.57 μM. The possible interferences in cottonseed oil did not influence the detection. The proposed method was effectively applied toanalyzeGsp oil with a recovery rate ranging from 94.20 % to 104.90 %. Furthermore, a portable and smart sensing platform was developed based on probe fixation and mobile phones.
如何实现金属有机框架材料（MOFs）的良好分散是其在许多领域应用的关键。在我们的工作中，以TBAPy [1,3,6,8-四（对苯甲酸）芘]为有机配体、镧系金属离子为金属离子源，通过溶剂热法合成了一种新型的MOF纳米复合材料TBAPy-Yb。由于磷酸盐与TBAPy-Yb之间的配位作用，TBAPy-Yb在磷酸盐缓冲液中具有优异的分散性，并在435 nm处诱导出强荧光发射。棉酚（Gsp）在10.0至70.0 μM范围内可定期且即时淬灭TBAPy-Yb的诱导荧光，并导致明显的颜色变化，从蓝色变为无色。检测限低至4.57 μM。棉籽油中可能存在的干扰不影响检测。所提出的方法有效地应用于分析棉籽油中的Gsp，回收率在94.20%至104.90%之间。此外，基于探针固定和手机开发了一种便携式智能传感平台。
