Abstract
Hydrogen sulfide (H₂S) is a colorless compound with a characteristic rotten egg odor that serves as a significant indicator of pathological processes and food spoilage. In this study, we developed a novel probe SCN for H2S detection. When exposed to H2S, the Probe SCN selectively cleaves the oxygen-nitrile bond, resulting in a strong red fluorescence emission at 662 nm, which can be attributed to recovery from the intramolecular charge transfer (ICT) effect. This probe demonstrated outstanding features, including a substantial Stokes shift (236 nm) and a low detection limit of 0.41 μM. We successfully used the Probe SCN to detect H2S changes in common food samples such as eggs, fish, pork, and shrimp. Furthermore, the Probe SCN can also be used to detect H2S in living cells and mice. These findings confirmed the effectiveness of the SCN probe as a real-time tool for H2S detection and related imaging applications.
Published Version
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