A coumarin based probe for the efficient detection of hydrogen sulfide in aqueous medium is reported. The investigated coumarine‐based derivative forms spherical nanoparticles in aqueous media. In presence of Pd²⁺, a metallosupramolecular coordination polymer is formed, which is accompanied by quenching of the coumarin emission at 390 nm. Its Pd²⁺ complex could be used as a probe for chemoselective detection of monohydrogensulfide (HS⁻). Presence of HS⁻ leads to a'turn‐on' fluorescence signal, resulting from decomplexation of Pd²⁺ from the metallosupramolecular probe. The probe was successfully applied for qualitative and quantitative detection of HS⁻ in different sources of water directly collected from sea, river, tap and laboratory drain water, as well as in growth media for aquatic species.

中文翻译：

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用于硫化氢“开启”荧光检测的金属超分子配位聚合物。

报道了一种基于香豆素的探针，用于有效检测水介质中的硫化氢。所研究的香豆素衍生物在水介质中形成球形纳米颗粒。^{在 Pd 2+}存在下，形成金属超分子配位聚合物，并伴随着 390 nm 处香豆素发射的猝灭。其Pd ²⁺络合物可用作化学选择性检测一硫化氢(HS ^- )的探针。HS ⁻的存在会导致“开启”荧光信号，这是由于 Pd ²⁺从金属超分子探针中解络而产生的。该探针成功应用于直接从海洋、河流、自来水和实验室排水中收集的不同水源以及水生物种生长介质中的^{H2S定性和定量检测。}