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      https://www.ias.ac.in/article/fulltext/jcsc/129/10/1559-1569

    • Keywords

       

      Schiff base; nitrite; anion sensor; electrochemical recognition; salphen ligand.

    • Abstract

       

      The synthesis and characterization of a new Co(III) complex of a salphen-type Schiff base ligand, (E)-2-{[(2-aminopyridin-3-yl)imino]methyl}-4,6-di-tert-butylphenol (HL), are reported. The characterization has been carried out using X-ray single crystallographic, thermogravimetric, and spectroscopic techniques. The complex has been combined with polyvinyl chloride (PVC) membrane of various compositions and tested as an electrochemical electrode towards recognition of several anions. The electrode exhibits exceptional electrochemical recognition for the nitrite (NO⁻ ₂ ) anion in aqueous media. The electrode exhibited a linear response to NO⁻ ₂ with a detection limit of 5.76μM and displayed a linear Nernstian slope over the nitriteconcentration range of 1.0 × 10⁻⁵–1.0 × 10⁻¹ M in the pH range of 3–7 and a fast response time of less than 10 seconds. Theoretical calculations showed that the sensing could be via anion exchange in the Co(III) complex.

    • Author Affiliations

       

      HAKAN YILMAZ1 ABDULKADIR KOCAK2 MAOWULIDAN DILIMULATI1 YUNUS ZORLU2 MUBERRA ANDAC1

      1. Department of Chemistry, Ondokuz Mayis University, 55139 Samsun, Turkey
      2. Department of Chemistry, Gebze Technical University, 41400 Kocaeli, Turkey
    • Dates

       
    • Supplementary Material

       
  • Journal of Chemical Sciences | News

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