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Pyrene‐diaminomaleonitrile‐based fluorescent probe for the turn‐on detection and bioimaging of hypochlorite
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Pyrene‐diaminomaleonitrile‐based fluorescent probe for the turn‐on detection and bioimaging of hypochlorite
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Journal Article
Pyrene‐diaminomaleonitrile‐based fluorescent probe for the turn‐on detection and bioimaging of hypochlorite
2025
Overview
Hypochlorous acid (HClO), a key member of the reactive oxygen species, has an impact on both normal and abnormal functioning of a wide range of organisms. To deeply investigate the function of HClO in organisms and its impact on health status, there is an urgent need to develop efficient detection techniques in the biomedical field. Herein, a highly selective and sensitive hypochlorite fluorescent probe (Py‐DA) was designed and synthesized. Photophysical property tests and response behavior studies of Py‐DA showed high‐performance turn‐on detection of HClO/ClO−, including fast response, high sensitivity, excellent selectivity, and strong anti‐interference capabilities. Significantly, the emission intensity showed a good linear relationship with HClO/ClO− concentration in the range of 0–30.0 μM, and the detection limit was as low as 37.8 nM. In addition, convenient on‐site rapid (∼1 s) visual identification of aqueous HClO/ClO− was also realized via Py‐DA‐based paper strips. Furthermore, Py‐DA with good photo‐stability and low cytotoxicity has been successfully applied for HClO/ClO− imaging in human cervical cancer cells (HeLa). The results of this study provide new ideas for further investigation of the physiological and pathological effects of HClO. We prepared a “turn‐on” fluorescent probe Py‐DA for high‐performance recognition of HClO/ClO− at room temperature, which exhibits fast response rates (<5 s), excellent selectivity, strong anti‐interference capabilities, superior sensitivity, and low detection limits (37.8 nM). Convenient rapid visual smartphone identification and fluorescent imaging in living cells of HClO/ClO− were also successfully realized.
Publisher
John Wiley & Sons, Inc,Wiley
Subject
