以末端缩硫醛作为识别位点、苯并噻唑衍生物作为荧光团，设计并合成了一种具有特定反应的新型Hg²⁺荧光探针（BDP）。它与Hg²⁺结合时会促进硫解反应，生成具有强荧光的3-苯并噻唑-6-二乙氨基-2-羟基苯甲醛，从而达到荧光增强的效果。通过紫外-可见吸收光谱和荧光发射光谱研究了探针BDP对Hg²⁺的识别效果，表明探针BDP可高选择性、高灵敏度地检测Hg²⁺，具有检出限低（14.9 nmol/L）、响应迅速等优良性能，已被成功应用于实际水样中Hg²⁺的检测。

A novel reactive fluorescent probe (BDP) is designed and synthesized through using terminal thiol as recognition site and benzothiazole derivatives as fluorescent groups.As combined with Hg²⁺, BDP probe can undergo a thiolysis reaction to produce 3-benzothiazol-6-diethylamino-2-hydroxybenzaldehyde with strong fluorescence.The detection effect of BDP probe for Hg²⁺ is studied by means of UV-Vis absorption spectra and fluorescence emission spectra.The finding demonstrates that BDP probe shows rapid response, high selectivity and sensitivity to detect Hg²⁺ in solution under mild conditions.The detection limit is as high as 14.9 nmol·L^-1.Additionally, the BDP probe has been successfully applied to the detection of Hg²⁺ in actual water samples.

李彩芳(1984-),女,硕士,讲师,研究方向为化工污水处理,31614054@qq.com。