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Review Article

Synthesis of covalent organic framework materials and their application in the field of sensing

Weiyu Zhang1Shiwei Liu1Qihua Sun1( )Ning Tian1( )Zhaofeng Wu1,2( )
Xinjiang Key Laboratory of Solid-State Physics and Devices, Urumqi 830046, China
School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China
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Graphical Abstract

This paper reviews the recent progress of covalent organic frameworks (COFs) in synthesis methods and sensing applications, including metal ion sensor, gas sensors, biomedical sensors, humidity sensors, and pH sensors. The advantages and disadvantages of different synthesis methods are discussed, and the existing problems and future development in synthesis methods and sensing applications are also presented in order to provide a reference for researchers concerned with COFs and sensors.

Abstract

Covalent organic frameworks (COFs) are an emerging type of porous crystalline polymers formed by combining strong covalent bonds with organic building blocks. Due to their large surface area, high intrinsic pore space, good crystallization properties, high stability, and designability of the resultant units, COFs are widely studied and used in the fields of gas adsorption, drug transport, energy storage, photoelectric catalysis, electrochemistry, and sensors. In recent years, the rapid development of the Internet of Things and people’s yearning for a better life have put forward higher and more requirements for sensors, which are the core components of the Internet of Things. Therefore, this paper reviews the recent progress of COFs in synthesis methods and sensing applications, especially in the last five years. This paper first introduces structure, properties, and synthesis methods of COFs and discusses advantages and disadvantages of different synthesis methods. Then, the research progress of COFs in different sensing fields, such as metal ion sensors, gas sensors, biomedical sensors, humidity sensors, and pH sensors, is introduced systematically. Conclusions and prospects are also presented in order to provide a reference for researchers concerned with COFs and sensors.

Nano Research
Pages 162-195
Cite this article:
Zhang W, Liu S, Sun Q, et al. Synthesis of covalent organic framework materials and their application in the field of sensing. Nano Research, 2024, 17(1): 162-195. https://doi.org/10.1007/s12274-023-6027-x
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Received: 11 May 2023
Revised: 14 July 2023
Accepted: 19 July 2023
Published: 14 September 2023
© Tsinghua University Press 2023
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