A colorimeric and fluorescent probe QLB-CF has been developed for the highly sensitive and specific imaging of hydrogen polysuldes (H₂S_n, n> 1). Its selective fluorometric/colorimetric sensing of H₂S_n was demonstrated in detail. Upon addition of H₂S_n, the probe exhibited fast response to H₂S_n along with a remarkable color change from colorless to yellow which could be easily observed by the naked eye. Similarly, the probe exhibited fluorescence response to H₂S_n with approximately 7-fold fluorescence enhancement and the fluorescence color change from none to cyan. In addition, the probe displayed high selectivity towards H₂S_n among various analytes. What’s more, the probe has been successfully applied to exogenous H₂S_n detection and imaging in living cells, allowing us to visualize its sensing potential application in living cells.

已开发出用于氢聚双酚（H ₂ S _n，n> 1）的高灵敏度和特异性成像的比色和荧光探针QLB-CF。详细说明了其对H ₂ S _n的选择性荧光/比色传感。加入H ₂ S _n时，该探针显示出对H ₂ S _n的快速响应以及从无色到黄色的显着颜色变化，这可以用肉眼轻易观察到。同样，探针对H ₂ S _n表现出荧光响应具有约7倍的荧光增强作用，并且荧光颜色从无变化为青色。另外，该探针对各种分析物显示出对H ₂ S _n的高选择性。此外，该探针已成功应用于活细胞中外源H ₂ S _n的检测和成像，使我们能够可视化其在活细胞中的感测潜在应用。