A Near-Infrared Fluorescent Probe with a Large Stokes Shift for Detecting Hydrogen Sulfide in Environmental Waters, Wine Samples, and Living Systems
Shuai Gong, Yue Gu, Jixiang Tian, Xin Zhou, Yifan Chen, Jiaxing Chen, Xu Xu, Zhonglong Wang, Shifa Wang
Abstract
Hydrogen sulfide (H 2 S) is closely related to physiological diseases, environmental pollution, food safety, and plant growth. Herein, a new nopinone-based near-infrared fluorescent probe has been developed to detect H 2 S with superior performance, including a large Stokes shift, low detection limit, good selectivity, and fast response time. NPD-H 2 S was used to detect H 2 S in environmental water and wine samples quantitatively. In addition, NPD-H 2 S could be used to fabricate nanofiber membranes as a portable tool for sensitively detecting H 2 S vapor using a smartphone. Moreover, NPD-H 2 S has been effectively used to image H 2 S in HeLa cells, MCF-7 cells, and zebrafish. More importantly, the probe monitored the presence of H 2 S upregulation processes in Arabidopsis thaliana under salt stress by bioimaging. This work provides a concept for the intervention of external stresses in plant cultivation. Therefore, probe NPD-H 2 S can effectively monitor the fluctuation of H 2 S in the environment and living systems.