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<p>Multi-enzyme electrocatalytic cascades often suffer from poor electron-transfer efficiency, limiting their utility. We overcome this critical challenge by integrating an interfacial metal–phenolic network (MPN) layer with tunable properties based on the metal and polyphenol employed. Upon electropolymerization, MPNs provide a stable matrix for co-immobilizing glucose oxidase and horseradish peroxidase, enhancing their tandem activity. Through systematic evaluation of the impact of MPN composition on electron transfer, we demonstrate the tunability of these materials for cascade-specific optimization. This simple material is expected to support diverse enzymatic reactions important for technologies ranging from bioenergy to biosensing.</p>

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Metal-phenolic networks improve interfacial electron transfer in bio-electrochemical systems

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年5月7日

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  • Sunanda Dey,
  • Madeleine E. Laws,
  • Songyi Yeon,
  • Jesus M. Lopez Baltazar,
  • Chao-Chi Kuo,
  • Ariel L. Furst

摘要

Multi-enzyme electrocatalytic cascades often suffer from poor electron-transfer efficiency, limiting their utility. We overcome this critical challenge by integrating an interfacial metal–phenolic network (MPN) layer with tunable properties based on the metal and polyphenol employed. Upon electropolymerization, MPNs provide a stable matrix for co-immobilizing glucose oxidase and horseradish peroxidase, enhancing their tandem activity. Through systematic evaluation of the impact of MPN composition on electron transfer, we demonstrate the tunability of these materials for cascade-specific optimization. This simple material is expected to support diverse enzymatic reactions important for technologies ranging from bioenergy to biosensing.