亚硫酸氢盐
亚硫酸盐
荧光团
荧光
斯托克斯位移
化学
费斯特共振能量转移
生命科学中的荧光
光化学
无机化学
生物化学
光学
物理
DNA甲基化
基因
基因表达
作者
Fengting Liu,Wen-Wen Han,Hui Ren,Ruonan Wang,Wan-Jing Yang,Jun‐Ying Miao,Bao‐Xiang Zhao,Zhao‐Min Lin
标识
DOI:10.1016/j.snb.2023.133305
摘要
Sulfur dioxide (SO2), as a known important sulfur oxide in RSS, has an essential role in achieving the homeostasis of organisms. The development of a highly sensitive and selective fluorescent probe for monitoring SO2 is of great interest in understanding its pathophysiology. Herein, we developed a new near-infrared FRET-based fluorescent probe QD, in which quinolinium fluorophore was selected as the donor and the dicyanoisophorone fluorophore was selected as the acceptor. Probe QD had dual colorimetric and ratiometric fluorescence, larger Stokes shift (277 nm) and longer emission wavelength (677 nm). The fluorescence spectrum showed that QD was highly selective and sensitive with excellent linear response concentration range of 2.5–80 μM. Importantly, probe QD allowed detection of SO2 derivatives and bioimaging of lysosome-targeted in live cells.
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