A fluorescent probe based on a simple coumarin derivative could recognise mercury ions (Hg(ii)) and thiols selectively in aqueous solution. The addition of Hg(ii) induced a blue shift of the fluorescence emission band of the probe while the fluorescence was almost quenched by the addition of p‐toluenethiol or cysteine (Cys). The detection limit of the probe towards Hg(ii) and Cys was 8 µmol/L. The probe could be used for the detection of Hg(ii) and thiols by the naked eye under ultraviolet light irradiation.

中文翻译：

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一种基于简单香豆素衍生物的汞离子和硫醇双重检测荧光探针

基于简单香豆素衍生物的荧光探针可以在水溶液中选择性识别汞离子（Hg（ii））和硫醇。加入Hg（ii）会引起探针的荧光发射带发生蓝移，而加入对甲苯硫醇或半胱氨酸（Cys）几乎使荧光猝灭。探针对Hg（ii）和Cys的检出限为8 µmol / L。该探针可用于肉眼在紫外线照射下检测Hg（ii）和硫醇。