Advances of electrochemical sensors based on covalent organic framework materials

Covalent organic frameworks (COFs) materials are an emerging class of crystalline porous materials made of light elements ( C, O, N, B, etc.) connected by strong covalent bonds. In recent years, COFs are widely used in the field of electrochemical sensing because of their tunable pore size, permanent porosity, and topological designability. The composite of functional materials such as metal nanoparticles, carbon materials, metal-organic frameworks, and enzymes with COFs can significantly improve the analytical performance of electrochemical sensors, achieving high sensitivity and selectivity. This review demonstrates the recent advances in electrochemical sensors, summarizes the development and preparation of COFs-based electrochemical sensors, and explains their sensing mechanisms. This review also describes the design and synthesis of novel COFs materials and the research progress of electrochemical sensors based on them depending on novel detection modes. © 2024, Youke Publishing Co.,Ltd. All rights reserved.