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    • 1,3-dinitrobenzene containing Indole-based Schiff bases as chromogenic receptors for F¯ anions

      BARNALI DEKA RUPAM J SARMA

      Volume 133 Published: 19 June 2021 Article ID 0062

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/133/0062

    • Keywords

       

      Fluoride; Schiff base; Hydrazone; Charge transfer; Anion recognition.

    • Abstract

       

      Two colorimetric indole-based Schiff base receptors containing electron-deficient 1,3-dinitrobenzenemotif, R1 and R2 were developed as a potential receptors for F¯ anion. Detailed UV-visible and 1H NMR studies revealed that the interactions of the receptor R2 with F¯ anions were driven by H-bondingfollowed by anion-induced deprotonation. The anion-receptor interactions produced distinct colorimetricchanges in solution, which was visible to the naked eye.

    • Graphical Abstract

       

    • Author Affiliations

       

      BARNALI DEKA1 2 RUPAM J SARMA1

      1. Department of Chemistry, Gauhati University, Guwahati, Assam 781014, India
      2. Department of Chemistry, Handique Girls’ College, Guwahati, Assam 781001, India

    • Dates

       
      Published
      19 June 2021
      Manuscript received
      26 November 2020
      Manuscript revised
      11 April 2021
      Accepted
      2 May 2021

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