Seven novel chemosensors contain azo chromophore and phenylthiourea, were synthesized and applied as colorimetric probes in aqueous solutions of dimethyl sulfoxide. The anion recognition studies exhibited that the synthesized azo dye derivatives act as a highly dual-sensitive and selective chromogenic sensor for naked-eye detection of Hg²⁺ and CN^¯ ions, with a different color change from yellow to colorless and yellow to red, respectively. The limit of detection (LOD) was found for 3c toward Hg²⁺ and CN^¯ ions to be 4.89 μM and 2.23 μM, respectively. The result of the Job's plot indicating that the stoichiometry binding ratios of compound 3c to Hg²⁺ is 1:1 and to CN^¯ is 1:2. These results were confirmed by ¹H NMR titration experiments.

合成了七个包含偶氮发色团和苯硫脲的新型化学传感器，并将其用作比色探针在二甲基亚砜水溶液中的比色探针。所表现出的阴离子识别的研究，所合成的偶氮色素衍生物充当用于裸眼检测Hg的高度双灵敏的和选择性的显色传感器²⁺和CN ^¯离子，具有从黄色到无色和黄色到红色不同的颜色变化，分别。检测（LOD）的限制，发现为图3c朝向汞²⁺和CN ^¯离子分别为4.89μM和2.23μM。乔布图的结果表明化合物3c与Hg ²⁺的化学计量结合比为1：1和CN ^¯为1：2。这些结果通过¹ H NMR滴定实验证实。