A near-infrared ratiometric fluorescence probe base on spiropyran derivative for pH and its application in living cells
作者:Kangming Xiong、Caixia Yin、Yongkang Yue、Fangjun Huo
DOI:10.1016/j.saa.2019.117350
日期:2019.12
designed a near-infrared ratiometric fluorescenceprobe for pH detection. The spectroscopic responses of probe to pH variations were investigated in CH3OH/PBS (v/v, 1:1) mixed solution at different pH values. The experimental results showed that the probe is sensitive to acidity, and the pKa of probe is calculated to be 4.85. When the pH was decreased from 9.0 to 1.0, the color of probe solution change