• A novel benzophenone-based colorimetric chemosensor for detecting Cu2+ and F-

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/131/02/0010

    • Keywords

       

      Fluoride; colorimetric chemosensor; copper ion; theoretical calculations.

    • Abstract

       

      A novel selective colorimetric chemosensor ANBP ((E)-(2-(((8-hydroxy-2,3,6,7-tetrahydro-1H,5Hpyrido[3,2,1-ij]quinolin-9-yl)methylene)amino)-5-nitrophenyl)(phenyl)methanone), based on the combination of benzophenone group and julolidine chromophore, was synthesized. Sensor ANBP showed rapid colorimetric responses toward Cu2+ (pale orange to pink) and F- (orange to blue). The detection limit by ANBP to Cu2+(6.82 µM) was far below WHO guideline value (31.3 µM). Moreover, ANBP could quantify Cu2+ in aqueoussamples. 1:1 binding mode between ANBP and Cu2+ or F- was proposed by ESI-mass analyses and Job plots. The remarkable color changes with Cu2+ and F - resulted from the intramolecular charge transfer (ICT) effect, which was demonstrated by theoretical calculations.

    • Author Affiliations

       
    • Dates

       
    • Supplementary Material

       
  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.