苯并噻唑
过氧化氢
荧光团
荧光
化学
内生
分子内力
斯托克斯位移
光化学
单线态氧
生物物理学
氧气
生物化学
生物
立体化学
有机化学
物理
量子力学
作者
Han-Chen Zhang,Dihua Tian,Ya-Long Zheng,Fang Dai,Bo Zhou
标识
DOI:10.1016/j.saa.2020.119264
摘要
Hydrogen peroxide (H2O2), depending on its levels, plays a crucial role in either modulating various biological processes as a signal molecule, or mediating oxidative damage as a toxin. Therefore, monitoring intracellular H2O2 levels is pivotal for exploring its physiological and pathological roles. Using a modified 2-(2′-hydroxyphenyl) benzothiazole (HBT) as the fluorophore, and a pinacol phenylborate ester as the responsive group, herein we developed an excited-state intramolecular proton transfer (ESIPT)-based probe BTFMB. The probe exhibited turn-on fluorescence response, large Stokes shift (162 nm) and low detection limit (109 nM) toward H2O2, and was successfully applied for monitoring exogenous and endogenous production of H2O2, and identifying accumulation of H2O2 during the ferroptosis process.
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