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首页> 外文期刊>RSC Advances >A novel fluorescence turn-on probe for the selective detection of thiophenols by caged benzooxazolidinoindocyanine
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A novel fluorescence turn-on probe for the selective detection of thiophenols by caged benzooxazolidinoindocyanine

机译：笼状苯并恶唑烷二氢吲哚菁选择性检测硫酚的新型荧光开启探针

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摘要

Based on a strategy involving 2,4-dinitrophenyl ether and functionalized caged benzooxazolidinoindocyanine, a fluorescence turn-on probe for the selective detection of thiophenols was developed. Using the chemical properties of thiophenols, which are able to induce aromatic nucleophilic substitution (SNAr), and the principle of chemical-reaction-induced skeletal rearrangement, the probe (PBO) exhibits excellent selectivity for thiophenols with a detection limit of 7?nM. This probe features dramatic color changes and a significant fluorescence turn-on response (120 fold) after being treated with thiophenol. The applications of this new probe were demonstrated by the detection of thiophenol in real water samples and by fluorescence imaging of thiophenol in BEL-7402 cells.
机译：基于一种涉及2,4-二硝基苯醚和功能化笼状苯并恶唑烷二氢吲哚菁的策略，开发了一种用于选择性检测硫酚的荧光开启探针。利用能够诱导芳族亲核取代（S N Ar）的硫酚的化学性质以及化学反应诱导的骨架重排的原理，该探针PBO）对苯硫酚具有优异的选择性，检出限为7？nM。用硫酚处理后，该探针具有明显的颜色变化和显着的荧光开启响应（120倍）。通过检测真实水样中的苯酚和BEL-7402细胞中的苯酚荧光成像，证明了这种新探针的应用。

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