Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
Department College of Tobacco Science, Guizhou University, Guiyang 550025, China.
Dalton Trans. 2023 May 30;52(21):7279-7289. doi: 10.1039/d3dt00995e.
A supramolecular fluorescence array sensor based on cucurbituril-dye host-guest complexes (6-QAA@Q[7], PyY@Q[7], and TO@Q[8]) was constructed. The results showed that it can quickly identify and detect toxic heavy metal ions, such as Ag, Cr, Hg, Ni, and Pb. When these five toxic heavy metal ions were added to the supramolecular fluorescence array sensor, different fluorescence responses were produced due to the different binding capacities of the metal ions to the cucurbituril-dye complex. Linear discriminant analysis (LDA) showed that the supramolecular fluorescence array sensor could identify and distinguish these five toxic heavy metal ions and a mixture containing different concentration ratios could be classified. The linear correlation between the metal ion concentration and factor 1 (F1) was strong, and the detection limit (LOD) was as low as 10-10 mol L. These five toxic heavy metal ions in environmental water and rice seedling extracts were identified using the supramolecular fluorescence array sensor. This sensor provides a quick and convenient method for monitoring toxic heavy metal ions in sewage.
基于葫芦脲-染料主客体配合物（6-QAA@Q[7]、PyY@Q[7]和 TO@Q[8]）构建了一种超分子荧光阵列传感器。结果表明，它可以快速识别和检测有毒重金属离子，如 Ag、Cr、Hg、Ni 和 Pb。当将这五种有毒重金属离子加入到超分子荧光阵列传感器中时，由于金属离子与葫芦脲-染料配合物的结合能力不同，产生了不同的荧光响应。线性判别分析（LDA）表明，超分子荧光阵列传感器可以识别和区分这五种有毒重金属离子，并且可以对不同浓度比的混合物进行分类。金属离子浓度与因子 1（F1）之间具有较强的线性相关性，检测限（LOD）低至 10-10 mol L。使用超分子荧光阵列传感器对环境水样和水稻幼苗提取物中的这五种有毒重金属离子进行了鉴定。该传感器为监测污水中的有毒重金属离子提供了一种快速方便的方法。
