化学
分子内力
荧光
硫化氢
选择性
检出限
光化学
硫黄
色谱法
立体化学
有机化学
光学
物理
催化作用
作者
Ting Cao,Zhidong Teng,Deyan Gong,Jing Qian,Wei Liu,Kanwal Iqbal,Wenwu Qin,Huichen Guo
出处
期刊:Talanta
[Elsevier]
日期:2019-06-01
卷期号:198: 185-192
被引量:24
标识
DOI:10.1016/j.talanta.2019.02.017
摘要
A ratiometric visualized fluorescent probe of H2S of intramolecular charge transfer (ICT) and excited intramolecular proton transfer (ESIPT) mechanisms due to solvation effects has been designed and synthesized. This chemosensor shows the distinct signal changes with dual-emission in blue and green fluorescence spectral channel (from 495 nm to 525 nm) upon the addition of H2S in a single wavelength excitation. This chemosensor exhibits the low detection limit (91 nM) and high sensitivity and selectivity. Based on this, this chemosensor was successfully used not only to monitor H2S exogenously but also used to detect and image the endogenously generated H2S in HeLa cells with excellent performance.
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