As mercury ions (Hg²⁺) are emanated to surroundings in the course of various natural events and human activities, an accurate sensing of Hg²⁺ is essential for human health and environmental protection. Herein, a new aggregation-induced chemiluminescence (CL) sensor for fast, sensitive, and selective detection of Hg²⁺ is developed, based on the CL enhancement of bis(2,4,6-trichlorophenyl)oxalate (TCPO)-H₂O₂ system by thiolate-protected gold complexes (Au(I)-thiolate complexes) in the aggregated state. Because Hg²⁺ has a strong interaction with hydrosulfuryl (-SH) groups in Au(I)-thiolate complexes, the aggregation is disrupted and the CL is quenched. The decrease of CL intensity is proportional to Hg²⁺ contents with a linear range of 0.005–10 μg mL⁻¹ and the limit of detection (LOD) is 3 ng mL⁻¹. To the best of our knowledge, this is the first AIE CL sensor for Hg²⁺ detection. The study opens up attractive perspectives for developing simple and rapid aggregation-induced CL methods in monitoring heavy metals.

随着汞离子（Hg ²⁺）在各种自然事件和人类活动过程中散发到周围环境中，对Hg ²⁺的精确感测对于人类健康和环境保护至关重要。在此，基于对双（2,4,6-三氯苯基）草酸酯（TCPO）-H ₂的CL增强作用，开发了一种新的聚集诱导化学发光（CL）传感器，用于快速，灵敏和选择性地检测Hg ^2+。 O ₂系统由处于聚集状态的硫醇盐保护的金络合物（Au（I）-硫醇盐络合物）组成。因为汞²⁺与Au（I）-硫醇盐配合物中的氢硫酰基（-SH）基团具有强烈的相互作用，聚集被破坏，CL被淬灭。CL强度的降低与Hg ²⁺含量成正比，线性范围为0.005–10μgmL ^-1 ，检测极限（LOD）为3 ng mL ^-1。据我们所知，这是第一款用于Hg ²⁺检测的AIE CL传感器。该研究为开发简单且快速的聚集诱导的CL方法监测重金属打开了诱人的前景。