化学
荧光
检出限
内生
选择性
二氧化硫
光化学
硫黄
亲核细胞
生物物理学
组合化学
色谱法
生物化学
有机化学
催化作用
光学
物理
生物
作者
Linlin Yang,Nan Yang,Pengli Gu,Yihua Zhang,Xianyu Gong,Shichao Zhang,Junwan Li,Liguo Ji,Guangjie He
标识
DOI:10.1016/j.bioorg.2022.105801
摘要
SO2 is a well-known signal molecule and one of reactive sulfur species, which closely participates in many metabolic processes. While unbalanced metabolism of sulfur dioxide can lead to serious complications of various diseases. Therefore, a rapid and accurate monitoring of SO2 derivatives with high selectivity and sensitivity would be beneficial for their bio-analytic studies. Herein, a novel ratiometric fluorescent probe (NG-TCF) based on ICT mechanism for monitoring SO2 was developed. The probe underwent a nucleophilic addition of HSO3-/SO32- to give rise to a 120 nm blue-shift dual-emission signal changes in enhanced green channel and subdued red channel under a single wavelength excitation. The probe showed fast response rate (within 7 min), good sensitivity (the detection limit is 1.53 µM), and specific response toward HSO3-/SO32- over other bio-species, including H2S and ClO-. Moreover, the probe can be applied for visual ratio imaging of exogenous and endogenous SO2 derivatives in living cells.
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