A novel fluorescent probe TSA for the high selectivity of mercury (Hg²⁺) ion has been explored, which was obtained by two‐step synthesis. Probe TSA was barely emissive in HEPES buffer. In the presence of Hg²⁺ ion, the dithioacetal unit in probe TSA was hydrolyzed to be formyl group, consequently causing the intense sky‐blue emission via aggregation‐induced emission and intramolecular charge transfer mechanisms. Moreover, probe TSA was potential to detect Hg²⁺ ion in dyeing wastewater and clay soil.

中文翻译：

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利用AIE和ICT机理检测水溶液和土壤中Hg2 +离子的简单荧光开启探针

通过两步合成获得了一种新型的高选择性汞（Hg ²⁺）荧光探针TSA 。探针TSA在HEPES缓冲液中几乎不发光。在存在Hg ²⁺离子的情况下，探针TSA中的二硫缩醛单元被水解为甲酰基，因此通过聚集诱导的发射和分子内电荷转移机制引起强烈的天蓝色发射。此外，TSA探针具有检测印染废水和粘土中Hg ²⁺离子的潜力。