Abstract An organic chemical sensor (P) based on benzimidazole for detecting Hg2+ and pH in semi-aqueous media was described. P has a very high sensitivity and selectivity for Hg2+ in semi-aqueous media, and P monitoring Hg2+ with excellent anti-interference performance. Interestingly, H+ can remove Hg2+ from the [P-Hg2+] complex and restore the spectral signal of P. The sigmoidal fitting of pH-dependent fluorescence intensity provided an apparent pKa value of 6.51. This research may enrich the field of multi-functional chemosensors in natural products.

中文翻译：

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用于检测汞 (II) 离子和 pH 值的哌嗪调谐苯并咪唑基多功能荧光传感器

摘要 描述了一种基于苯并咪唑的有机化学传感器 (P)，用于检测半水介质中的 Hg2+ 和 pH。P对半水介质中的Hg2+具有非常高的灵敏度和选择性，P监测Hg2+具有优异的抗干扰性能。有趣的是，H+ 可以从 [P-Hg2+] 复合物中去除 Hg2+ 并恢复 P 的光谱信号。pH 依赖性荧光强度的 sigmoidal 拟合提供了 6.51 的表观 pKa 值。这项研究可能会丰富天然产物中多功能化学传感器的领域。