“Turn-Off” Supramolecular Fluorescence Array Sensor for Heavy Metal Ion Identification

作者：Qin Wang, Kai-Ni Wei, Shuzhen Huang, Qing Tang, Zhu Tao, Ying Huang · 发表于：ACS Omega · 年份：2021 · DOI：10.1021/acsomega.1c04956 · 被引用次数：25 · 研究领域：Molecular Sensors and Ion Detection、Supramolecular Chemistry and Complexes、Luminescence and Fluorescent Materials

High Resolution Image Download MS PowerPoint Slide A “turn-off” supramolecular fluorescence array sensor based on the host–guest complexes between fluorescence dyes and cucurbit[ n ]urils for sensing metal ions was developed. Three fluorescent probes ( [email protected] [7], [email protected] [7], and [email protected] [7]) were used as the sensing units to construct a supramolecular fluorescence array sensor. The binding ability of the metal ions and cucurbituril-dye probes varied; therefore, the probes and metal ions produced different fluorescence responses. When combined with linear discriminant analysis (LDA), the qualitative and quantitative detection of seven metal ions was achieved. In analytical samples, the supramolecular fluorescence array sensor recognized and distinguish seven metal ions. These results provided new research ideas for the rapid analysis and real-time monitoring of different heavy metal ions.