基于共价有机框架材料的电化学传感器研究进展

Advances of electrochemical sensors based on covalent organic framework materials

共价有机框架(COFs)材料是一类由轻质元素(C,O,N,B等)通过强共价键连接而成的新兴结晶多孔材料。COFs因其可调孔径、永久孔隙率、拓扑可设计性等优点,被广泛用于电化学传感领域。金属纳米粒子、碳材料、金属有机框架、酶等功能材料与COFs复合,可以显著提高电化学传感器的分析性能,实现高灵敏度和选择性检测。本综述阐述了基于COFs的电化学传感器的最新研究进展,总结了制备方法,并对其传感机制进行了解释。介绍了新型COFs材料的设计和合成,以及基于新型检测模式的COFs电化学传感器的研究进展。

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.