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<p>In the present work, polyethylene glycol (PEG) supported electrolyte Potassium triiodide (KI<sub>3</sub>) has been synthesised. Ultraviolet-visible (UV-visible) spectroscopy, infrared spectroscopy (FTIR), powder X-ray Diffraction (XRD) and Scanning electron microscopy (SEM) were performed to understand the bonding between polymer and electrolyte. The SEM images show the capturing of small K<sup>+</sup> ion on the PEG surface. Besides, the present study examines the conductivity of polymer gel electrolyte based on PEG. The highest conductivity of the [K(PEG)]<sup>+</sup>(I<sub>3</sub>)<sup>−</sup> complex is found to be 0.74 mS/cm with composition 0.5 wt% at room temperature. The results show that as the temperature increases, the conductivity of the gel electrolyte, [K(PEG)]<sup>+</sup>(I<sub>3</sub>)<sup>−</sup> also enhances. The most suitable results are observed for PEG<sub>4k</sub>KI<sub>3</sub> (Polyethyle glycol-4000 entrapped KI<sub>3</sub> complex) in the range of 0.3–0.4 wt%. Nevertheless, ionic activity depends on the polymer electrolyte ratio. The [K(PEG)]<sup>+</sup>(I<sub>3</sub>)<sup>−</sup> complex is found to be active against gram bacteria.</p>

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Synthesis of [K(PEG)]+(I3)− complex and study of conductivity and antibacterial activity

  • 期刊论文

  • 发表日期：

    2026年1月30日

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  • Geetanjali Baruah,
  • Dipjyoti Gogoi,
  • Roktim Ronjon Phukan,
  • Arkajyoti Bora,
  • Rupa Rani Dey,
  • Sourabh Kumar Das

摘要

In the present work, polyethylene glycol (PEG) supported electrolyte Potassium triiodide (KI3) has been synthesised. Ultraviolet-visible (UV-visible) spectroscopy, infrared spectroscopy (FTIR), powder X-ray Diffraction (XRD) and Scanning electron microscopy (SEM) were performed to understand the bonding between polymer and electrolyte. The SEM images show the capturing of small K+ ion on the PEG surface. Besides, the present study examines the conductivity of polymer gel electrolyte based on PEG. The highest conductivity of the [K(PEG)]+(I3)− complex is found to be 0.74 mS/cm with composition 0.5 wt% at room temperature. The results show that as the temperature increases, the conductivity of the gel electrolyte, [K(PEG)]+(I3)− also enhances. The most suitable results are observed for PEG4kKI3 (Polyethyle glycol-4000 entrapped KI3 complex) in the range of 0.3–0.4 wt%. Nevertheless, ionic activity depends on the polymer electrolyte ratio. The [K(PEG)]+(I3)− complex is found to be active against gram bacteria.