A Dicyanoisophorone-based Fluorescent Turn-on Probe for Rapid Detecting Thiophenol in Aqueous Medium and Living Cell Imaging.

Yaqiao Shi, Jianwei Wu, Liting Jiang, Haoxiang Bai, Ru Feng, Yue Wang, Zhaoli Xue
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Abstract

A novel colorimetric and fluorescent thiophenol probe based on dicyanoisophorone has been successfully achieved, which has low-cost, easy operation, high selectivity, sensitivity and stability. The chemosensor shows a large Stokes shift and approximately 170 nm when excited at 510 nm. ISO-DiNO2 could be utilized as "Turn-on" and a naked-eyes chemosensor to detect PhSH, which is accompanied by a distinct color shift from red to dark purple with strong red fluorescence at 365 nm UV-light. Its limit of detection was determined to be 1.15 μM. More importantly, ISO-DiNO2 can react instantaneously (<10 s) with PhS-. In addition, ISO-DiNO2 has been utilized in test paper strips, water sample together with imaging of PhS- in living Raw264.7 cells, demonstrating that ISO-DiNO2 has excellent and promising applications.

一种基于二氰异佛酮的荧光导通探针,用于快速检测水介质中的苯硫酚和活细胞成像。
成功实现了一种基于二氰异佛尔酮的新型比色荧光硫酚探针,该探针具有成本低、操作简便、选择性高、灵敏度高和稳定性好等特点。该化学传感器在 510 纳米波长下激发时会出现较大的斯托克斯位移,约为 170 纳米。ISO-DiNO2 可用作 "开启 "和裸眼化学传感器来检测 PhSH,在 365 nm 紫外光下,PhSH 会从红色明显转变为深紫色,并发出强烈的红色荧光。其检测限被确定为 1.15 μM。更重要的是,ISO-DiNO2 可在瞬间反应(-)。此外,ISO-DiNO2 还被用于试纸条、水样以及活体 Raw264.7 细胞中 PhS- 的成像,这表明 ISO-DiNO2 具有良好的应用前景。
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