当前位置: 首页 > 文章 > 一种新型高选择性次氯酸荧光探针的研制及其应用 江苏大学学报(自然科学版) 2018 (5) 586-590
Position: Home > Articles > Development and application of a novel fluorescent probe for hypochlorous acid with high selectivity Journal of Jiangsu University (Natural Science Edition) 2018 (5) 586-590

一种新型高选择性次氯酸荧光探针的研制及其应用

作  者:
韩志湘;蔡春祥;张功博;姜梦云;李辉
单  位:
江苏大学环境与安全工程学院
关键词:
荧光探针;香豆素;次氯酸;荧光成像;活细胞
摘  要:
以7-二乙胺基香豆素-3-羧酸为荧光母体,通过酰胺化反应键联强淬灭基团二硝基苯肼,得到荧光探针分子1(化合物1),用于水相中次氯酸的检测及活细胞内次氯酸的荧光成像可视化检测.研究结果表明:荧光探针分子1由于二硝基苯肼的强淬灭荧光作用和酰肼中N—N单键的旋转作用共同导致了其荧光背景非常弱;当加入次氯酸时荧光显著增强,同时溶液从无荧光变为蓝色强荧光.当加入100μmol·L~(-1)的次氯酸时,在463 nm处荧光强度增强了134倍.荧光探针分子1对次氯酸响应线性范围为0.1~40.0μmol·L~(-1),检测下限为0.052μmol·L~(-1).荧光探针分子1对次氯酸表现出特异性识别且响应速度快.最后,荧光探针分子1被成功用于活细胞内HOCl的可视化检测.
译  名:
Development and application of a novel fluorescent probe for hypochlorous acid with high selectivity
作  者:
HAN Zhixiang;CAI Chunxiang;ZHANG Gongbo;JIANG Mengyun;LI Hui;School of the Environment and Safety Engineering,Jiangsu University;
单  位:
HAN Zhixiang%CAI Chunxiang%ZHANG Gongbo%JIANG Mengyun%LI Hui%School of the Environment and Safety Engineering,Jiangsu University
关键词:
fluorescent probe;;coumarin;;HOCl;;fluorescence imaging;;living cell
摘  要:
The 7-( diethylamino)-N'-( 2,4-dinitrophenyl)-2-oxo-2 H-chromene-3-carbohydrazide-based fluorescent probe 1 was reasonably designed,synthesized and employed for the detection of hypochlorous acid( HOCl) in aqueous solution and living cells. The results show that the probe 1 exhibits almost none fluorescence due to the strong quenching effect of dinitrophenyl group and the unique rotation of N—N single bond in acetohydrazide group. With the addition of HOCl, the significant fluorescence enhancement is obtained with notable fluorescence color changing from dark to bright blue. In the presence of 100 μmol · L~(-1) HOCl,the fluorescence intensity of probe 1 is enhanced 134 times. The relationship between fluorescence intensity of probe 1 at 463 nm and HOCl concentration shows linear enhancement from 0. 1 μmol·L~(-1) to 40. 0 μmol·L~(-1),and the detection limit can reach 0. 052 μmol·L~(-1). Probe 1 shows specific recognition to HOCl with fast response. The probe 1 can be successfully applied to visualize HOCl in living cells with the aid of fluorescence imaging.

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