Biphenyl-based AIE-active turn-on fluorescent probes for simultaneous sensing of biothiols and amine vapors and visual real-time monitoring of seafood spoilage
作者:Ge Ding、Xinchao Wang、Yinjie Fan、Changxin Ling-hu、Linling Zhou、Shunbi Xie、Jinlei Chen、Yanfen Zhang、Guangyong Gao
DOI:10.1016/j.dyepig.2023.111686
日期:2023.12
NBSC segment of FCH-NBSC and AC group of FCH-AC respectively to form a common ESIPT compound FCH–OH, which opened aggregation induced emission (AIE) property promoted by intra/intermolecular H-bonds. Furthermore, FCH-NBSC can successfully achieve rapid biothiols recognition inside biological cells via difference in fluorescent signals due to its low toxicity and high sensitivity. Meanwhile, probe FCH-AC
生物体中生物硫醇和挥发性蒸气胺含量的异常会对人体健康造成严重危害,开发方便、便携式的生物硫醇和胺识别检测装置具有重要的科学意义和实际应用意义。迄今为止,主要受限于聚集引起的猝灭(ACQ)效应,传统荧光传感的潜在应用受到极大限制。在本论文中,设计并构建了两种基于联苯的“开启”型荧光探针FCH-NBSC和FCH-AC ,分别用于生物硫醇和蒸气胺的定量检测,它们由共同的荧光团FCH-OH组成具有 AIE 特性和两个敏感识别片段硝基苯磺酰氯 (NBSC) 和乙酰基 (AC)。实验数据表明,探针FCH-NBSC和FCH-AC在检测生物硫醇时表现出优异的线性度和较低的检测限(Cys,0.228 μM,GSH,0.212 μM,Hcy,0.315 μM,蒸气胺,7.6 ppm)。传感机制表明,这种荧光特性的变化可归因于生物硫醇和蒸气胺分别导致FCH-NBSC的 NBSC 片段和FCH-AC的 AC 基团裂解,形成常见的