An efficient fluorescent probe 1 based on tricarbocyanine derivative was designed and synthesized, which can detect Ag+ in real industrial wastewater. UV-Vis absorption and fluorescent emission spectra of probe 1 were carried out and indicated this probe can bind Ag+ via complexation reaction, then leading to a remarkable color change from blue to light red. Furthermore, probe 1 showed high sensitive performance and excellent selectivity toward Ag+ over other common metal ions in neutral pH. The sensing mechanism was proposed and further confirmed by 1H NMR, which demonstrate analyte-induced destruction of the π-electron system could be shorten by the disruption of the pull-push π-conjugation system in probe 1. Moreover, a test strip was prepared by filter paper immersing in probe 1 solution, which further provide its potential application for trace Ag+ detection in real industrial wastewater.

中文翻译：

---

基于三卡波胺的高选择性和灵敏的比色化学传感器用于工业废水中Ag ^+的检测

设计并合成了一种基于三碳菁衍生物的高效荧光探针1，该探针可检测实际工业废水中的Ag +。进行了探针1的UV-Vis吸收和荧光发射光谱，表明该探针可以通过络合反应结合Ag +，然后导致显着的颜色变化，从蓝色变为浅红色。此外，探针1在中性pH值下对其他常见金属离子表现出高灵敏度性能和对Ag +的优异选择性。提出了传感机理，并通过1 H NMR进一步证实了该机理，这表明通过破坏探针1中的推挽π共轭体系，可以缩短分析物对π电子体系的破坏。此外，还准备了测试条通过将滤纸浸入探针1溶液中，