A Highly Sensitive and Selective Fluorescent Probe for Thiophenol Designed via a Twist-Blockage Strategy

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• 作者：Qi Sun ; Shu-Hou Yang ; Lei Wu ; Wen-Chao Yang ; Guang-Fu Yang
• 刊名：Analytical Chemistry
• 出版年：2016
• 出版时间：February 16, 2016
• 年：2016
• 卷：88
• 期：4
• 页码：2266-2272
• 全文大小：463K
• ISSN：1520-6882

文摘

A benzoquinolizine coumarin-based fluorescent probe was developed for detecting thiophenols, demonstrating the superior fluorescence properties caused by the decay of the twisting effect of N,N-diethylamino group of coumarin. It discriminated thiophenols from various analytes including aliphatic thiols with good selectivity and displayed ∼700-fold fluorescence intensity enhancement and a remarkable limit of detection (4.5 nM). The new probe also can be applied to quantitative determine the concentrations of thiophenol in water samples and living cells.