Chen Xiaoqian, Yang Naqin, Ma Yue, Yang Xinan, Ma Peihua
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
Guiyang College of Humanities and Science, Guiyang 550025, China.
Beilstein J Org Chem. 2023 Jun 13;19:864-872. doi: 10.3762/bjoc.19.63. eCollection 2023.
In this paper, tetramethyl cucurbit[6]uril (TMeQ[6]) and 1,2-bis(4-pyridyl)ethene (G) were used to construct a supramolecular fluorescent probe G@TMeQ[6]. The host-guest interaction between TMeQ[6] and G was investigated using H NMR spectroscopy, single-crystal X-ray diffraction and various experimental techniques. The results show that TMeQ[6] and G form an inclusion complex with a host-guest ratio of 1:1 and the equilibrium association constant () was 2.494 × 10 M. The G@TMeQ[6] fluorescent probe can sensitively recognize Hg ions by fluorescence enhancement. The linear range is 0.33 × 10-1.65 × 10 mol·L, = 0.9926, and the limit of detection is 4.12 × 10 mol·L. The fluorescent probe can be used to detect the concentration of Hg ions in aqueous solution, and provides a theoretical basis for the development of new fluorescent probes for detecting heavy metal ions.
在本文中，使用四甲基葫芦[6]脲（TMeQ[6]）和1,2-双（4-吡啶基）乙烯（G）构建了一种超分子荧光探针G@TMeQ[6]。利用核磁共振氢谱、单晶X射线衍射和各种实验技术研究了TMeQ[6]与G之间的主客体相互作用。结果表明，TMeQ[6]与G形成了主客体比为1:1的包合物，平衡缔合常数（）为2.494×10 M。G@TMeQ[6]荧光探针可通过荧光增强灵敏地识别汞离子。线性范围为0.33×10 - 1.65×10 mol·L，=0.9926，检测限为4.12×10 mol·L。该荧光探针可用于检测水溶液中汞离子的浓度，为开发新型重金属离子检测荧光探针提供了理论依据。
