Journal
ANALYTICAL CHEMISTRY
Volume 93, Issue 12, Pages 5194-5200Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.0c05266
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Funding
- National Natural Science Foundation of China [U1608222, 21907110]
- Natural Science Foundation of Hunan Province, China [2020JJ5695]
- Fundamental Research Funds for the Central Universities of Central South University [2020zzts406, 202045010]
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The benzopyrylium-coumarin fluorescent probe PBC1, with a phenoxazine moiety, can dually sense HClO and SO2 with distinct fluorescence signals, showing rapid response time, high sensitivity, and selectivity. Moreover, PBC1 was successfully utilized to detect intracellular HClO and SO2 in HeLa cells and zebrafish.
Benzopyrylium-coumarin fluorescent probes for sensing hypochlorous acid (HClO) or sulfur dioxide (SO2) are unable to distinguish between HClO and SO2 because the two compounds can react with the 4-position of benzopyrylium-coumarin dyes through the nucleophilic attack. In the current work, we introduced a phenoxazine moiety to the benzopyrylium-coumarin dye to synthesize a new fluorescent probe PBC1, which can dually sense HClO and SO2 and generate distinct fluorescence signals with rapid response time and high sensitivity and selectivity. Moreover, probe PBC1 was also successfully utilized to detect intracellular HClO and SO2 in HeLa cells and zebrafish.
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