Benzothiazole-quinoline based probe for simultaneous colorimetric detection of CN- and Cu2+ ions, with fluorescence sensing for Cu2+: Mechanistic insights and practical applications in environmental monitoring and cellular analysis
Year: 2024
Type: article
Abstract: The development and synthesis of notably targeted and colorimetric sensor based on an azomethine compound for the distinct recognition of Cu 2+ and CN − ion individually in an aqueous dimethyl formamide solution is performed. In the presence of CN − and Cu 2+ , the sensor BTZ showed impressive colorimetric changes, going from pale yellow to orange and pale yellow to dark yellow, respectively. In the meantime, FL spectrum (Cu 2+ ) and UV–vis spectroscopy (CN − /Cu 2+ ) were used to assess the sensing features. The plausible binding mechanisms of CN − and Cu 2+ ions with sensor BTZ have been studied using the 1 H NMR titration, Job's plot and DFT technique. The bathochromic shift produced by the intramolecular charge transfer (ICT) transition may have been the source of the phenomenon. Furthermore, CN − ion in the commercial substance is quickly identified and measured with the naked eye by using sensor BTZ. It was found that the BTZ's LOD for CN − and Cu 2+ was 0.280 × 10 −7 M and 1.153 × 10 −7 M, respectively. Moreover, 1:1 binding ratio for the reaction of CN − and Cu 2+ ions with sensor BTZ were demonstrated by Job's plot, which was dependent on analytical data. The findings show that BTZ is an easy-to-use and practical probe for concurrently sensing cyanide and copper ions in environmental samples and living cells that have less cytotoxicity.
Source: Heliyon
Institution: Vellore Institute of Technology University
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,100
Funder: VIT University
OpenAlex ID: W4403144197