• A fluorescent sensor based on binaphthol-quinoline Schiff base for relay recognition of Zn²⁺ and oxalate in aqueous media

    • Fulltext


        Click here to view fulltext PDF

      Permanent link:

    • Keywords


      Zn& #178; & #8314; sensing; oxalate sensing; fluorescence; relay recognition

    • Abstract


      To develop an effective fluorescent chemosensor for relay recognition of Zn²⁺ and oxalate, a new fluorescent sensor based on binaphthol quinoline Schiff base L₁ was designed and synthesized. In DMSO-H₂O (1/1, v/v, HEPES 10 mM, pH = 7.4) solution, L₁ exhibits highly selective fluorescence turn on response to Zn²⁺ over other metal ions. The Zn²⁺ recognition event is barely interfered by other coexisting metal ions except Cu²⁺, Co²⁺ and Ni²⁺. The in situ generated L₁-Zn²⁺ complex was further used as a chemosensing ensemble for oxalate detection. The complex L₁-Zn²⁺ displays high selectivity to oxalate with significant fluorescence quenching through Zn²⁺ ion displacement approach. In addition, application of L₁ for imaging of Zn²⁺ and oxalate in living HeLa cells was also examined.

    • Author Affiliations

    • Dates

    • Supplementary Material

  • Journal of Chemical Sciences | News

© 2021-2022 Indian Academy of Sciences, Bengaluru.