| abstract |
The invention discloses a series of near - infrared fluorescent dyes and their application in detecting SO 3 2- /HSO 3- . The probe provided by the present invention itself exhibits near-infrared fluorescence in the mixed solution of DMSO and PBS, and with the increase of the proportion of PBS solution, the wavelength of the probe will further shift to red, and can specifically react with SO 2 to generate obvious fluorescence blue - shifted changes, enabling a specific response to SO. The probe has good stability, simple preparation, long-term storage and use, and good selectivity to SO 2 . |