期刊
JOURNAL OF MOLECULAR STRUCTURE
卷 1294, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molstruc.2023.136390
关键词
Fluorescent probe; Coumarin; Cu2+; H2S
A novel coumarin-based dual responsive fluorescent probe NNH was synthesized for detection of Cu2+ and H2S. The probe showed significant turn-off fluorescence response to Cu2+ and ratiometric fluorescence response to H2S, with high sensitivity and specificity. It can be used as a sensing tool for Cu2+ and H2S in environmental samples and living organisms.
Bifunctional fluorescent probe has excited extensive interest in view of its dual-emission detection mode, favorable efficiency and low cost. Herein, a novel coumarin-based dual responsive fluorescent probe NNH was synthesized for response to Cu2+ and H2S with different fluorescence signals. This probe displayed a significant turn-off fluorescence response to Cu2+, and the limit of detection (LOD) for Cu2+ was calculated to be 0.356 & mu;M. On the other hand, NNH exhibited a ratiometric fluorescence response to H2S with highly sensitivity (detection limit 4.266 & mu;M), and the fluorescence color change from orange to cyan in the presence of H2S. The sensing mechanisms of NNH between Cu2+ and H2S were approved by Job's plot, ESI-MS analysis, and density functional theory (DFT) calculations. Besides, NNH could be served as a sensing tool for Cu2+ and H2S in environmental samples and living zebrafish.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据