Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (12): 1903-1911.DOI: 10.19894/j.issn.1000-0518.220071

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Recognition of ClO and Cellular Imaging with Xanthene-based Fluorescent Probes

Si-Wei YU1,2, Liang-Peng WANG1,2, Ri-Zhe JIN1, Chuan-Qing KANG1,2()   

  1. 1.Laboratory of Polymer Composite and Engineering,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
    2.University of Science and Technology of China,Hefei 230022,China
  • Received:2022-03-15 Accepted:2022-07-23 Published:2022-12-01 Online:2022-12-13
  • Contact: Chuan-Qing KANG
  • About author:kangcq@ciac.ac.cn
  • Supported by:
    the Science and Technology Project of Jilin Province, China(20210401164YY)

Abstract:

Selective recognition of hypochlorite ion (ClO) in intracellular biological environment is important for research and application in cellular physiology and pathology. A novel fluorescent molecule, 6-bis(dimethylamino)-9-(1-(3-methyl-benzothiazole)-trimethyl)-xanthene (R-1), is designed and synthesized with a combination of dimethylamino-substituted xanthene and benzothiazole segments through continuous carbon-carbon double bonds. In the presence of ClO, the fluorescence emission of R-1 at 600 nm is significantly enhanced (the quantum yield is as high as 20.3%), and other reactive oxygen species do not affect the recognition of ClO. Fluorescence imaging experiments demonstrate that probe R-1 can detect ClO in human lung adenocarinoma (A549) cells and emit red fluorescence, indicating the potential application of R-1 in ClO biological imaging.

Key words: Fluorescent probe, Xanthene, Benzothiazole, Hypochlorite ion, Fluorescence imaging

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