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Recognition of Hg 2+ ion in an organic semi-aqueous medium by a new napthalimide based fluorescent probe and its bioimaging applications

Inorganic Chemistry Communications, ISSN: 1387-7003, Vol: 143, Page: 109735
2022
  • 12
    Citations
  • 0
    Usage
  • 8
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    12
    • Citation Indexes
      12
  • Captures
    8

Article Description

This work represents a napthalimide derived fluorescent sensor for the selective and sensitive detection of Hg 2+ utilizing the thioacetal group as a sensing unit. The immense selectivity of 6-(4-(1,3-dithian-2-yl)phenyl)-2-(2-morpholinoethyl)-1H benzo[de]isoquinoline-1,3(2H)-dione (TNA) has been investigated in ACN: H 2 O (8:2) system and the rapid response towards Hg 2+ was found to be 10 s. In detecting Hg 2+, TNC exhibits a blue emission (λ max  = 429 nm), and the limit of detection was evaluated to be 3.3 nM. The sensing mechanism describes that the Hg 2+ induces colorless to blue fluorescence-enhancement at 429 nm originated from the de-thiolation of an aldehyde. This stimulates the ICT process of TNA which resulted in the enhancement in fluorescence. Moreover, the sensor ligand was effectively applied for imaging Hg 2+ in E-coli live cells.

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