articleNature CommunicationsFeb 29, 2024GOLD OA

Charging modulation of the pyridine nitrogen of covalent organic frameworks for promoting oxygen reduction reaction

XYXiubei YangQAQizheng AnXLXuewen LiYFYubin FuSYShuai Yang

Chinese Academy of Sciences · Shanghai Advanced Research Institute · +4 more institutions

PubMed
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Abstract

Covalent organic frameworks (COFs) are ideal templates for constructing metal-free catalysts for the oxygen reduction reaction due to their highly tuneable skeletons and controllable porous channels. However, the development of highly active sites within COFs remains challenging due to their limited electron-transfer capabilities and weak binding affinities for reaction intermediates. Herein, we constructed highly active catalytic centres by modulating the electronic states of the pyridine nitrogen atoms incorporated into the frameworks of COFs. By incorporating different pyridine units (such as pyridine, ionic pyridine, and ionic imidazole units), we tuned various properties including dipole moments,…

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127
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8

Topics & keywords

Topics
Keywords
  • Pyridine
  • Imidazole
  • Ionic bonding
  • Catalysis
  • Chemistry
  • Covalent bond
  • Metal
  • Inorganic chemistry
UN Sustainable Development Goals
  • Clean water and sanitation
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