The fluorescence of a mercury probe based on osthol

Beilstein Journal of Organic Chemistry

Zhu Tao¹  Lin Zhang¹  Guangyan Luo¹  Qianjun Zhang¹  Zhishu Zeng¹ 

[1] Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China;

关键词: fluorescence probe;    mercury;    recognition mechanism;   

DOI  :  10.3762/bjoc.17.3

来源: DOAJ

【 摘 要 】

The ability of osthol (OST) to recognize mercury ions in aqueous solution was studied using fluorescence, UV–vis spectrophotometry, mass spectrometry, and 1H NMR spectroscopy, and the recognition mechanism is discussed. The results showed that OST and Hg2+ can form a complex with a stoichiometric ratio of 1:1. The binding constant was 1.552 × 105 L∙mol−1, having a highly efficient and specific selectivity for Hg2+. The fluorescence intensity of OST showed a good linear correlation with the Hg2+ concentration (6.0 × 10−5 to 24.0 × 10−5 mol∙L−1, R2 = 0.9954), and the detection limit of the probe was 5.04 × 10−8 mol∙L−1, which can be used for the determination of Hg2+ traces.

【 授权许可】

Unknown