A Heterocyclic-based Bifunctional Sensor for Detecting Cobalt and Zinc Ion

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  • SO Haeri
    Department of Fine Chemistry, Seoul National University of Science and Technology
  • LEE Hangyul
    Department of Fine Chemistry, Seoul National University of Science and Technology
  • KIM Cheal
    Department of Fine Chemistry, Seoul National University of Science and Technology

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<p>A new bifunctional chemosensor HBP ((E)-2-(2-((5-bromopyridin-2-yl)methylene)hydrazinyl) quinoline) based on heterocyclic compounds was designed and studied. The HBP showed successful detecting ability toward cobalt ion with a UV-visible red-shift and a color change of colorless to pink. Moreover, toward zinc ion, the HBP showed an obvious fluorescence turn-on response. The binding ratio of the HBP to cobalt and zinc was a 2 to 1 for both ions. The detection limits were found to be 10 nM for Co2+ and 18 nM for Zn2+. Based on UV-vis and fluorescent spectral variations, Job plots, ESI-MS, FT-IR and calculations, the binding mechanisms of the HBP toward cobalt and zinc ions were proposed.</p>

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  • Analytical Sciences

    Analytical Sciences 36 (12), 1535-1540, 2020-12-10

    社団法人 日本分析化学会

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