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高等学校化学研究 ›› 2022, Vol. 38 ›› Issue (2): 339-349.doi: 10.1007/s40242-022-1476-4

• Reviews • 上一篇    下一篇

Recent Advances of Covalent Organic Frameworks in Chemical Sensing

XU Kai, HUANG Ning   

  1. Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
  • 收稿日期:2021-11-30 修回日期:2022-01-06 出版日期:2022-04-01 发布日期:2022-05-18
  • 通讯作者: HUANG Ning E-mail:nhuang@zju.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (No.92163131) and the Start-up Fund of Zhejiang University, China.

Recent Advances of Covalent Organic Frameworks in Chemical Sensing

XU Kai, HUANG Ning   

  1. Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, State Key Laboratory of Silicon Materials, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, P. R. China
  • Received:2021-11-30 Revised:2022-01-06 Online:2022-04-01 Published:2022-05-18
  • Contact: HUANG Ning E-mail:nhuang@zju.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.92163131) and the Start-up Fund of Zhejiang University, China.

摘要: With the rapid development of reticular chemistry, an increasing number of covalent organic frameworks(COFs) have been designed and synthesized over the past decades. Owing to the large surface areas, numerous active sites, and high chemical stability, recent effects gradually were made to investigate the interaction with various small molecules. Among the reported application areas, sensorics is an attractive field, where COFs have exhibited tremendous potential and acquired high- performance sensitivity and selectivity due to their structural merits. In this review, we highlighted the recent progress of COFs as sensors for the detection of various analytes, mainly depending on the analysis of change of fluorescence signals. The basic principles of physics for fluorescence-based sensors were briefly discussed for better understanding of the relationship between structures and functions of COFs. Moreover, we reviewed various classes of small molecule analytes that have been successfully detected by COFs, including explosives, gases, humidity, metal ions, pH, and biological molecules. In this work, we detailedly discussed the components of COFs, functional sites, and sensing performance in each sensing application, aiming to disclose their intrinsic connection. This review also concluded with several issues to be solved and provided the outlook for the future development direction for practical applications.

关键词: Covalent organic framework(COF), Sensing, Fluorescence, Porous polymer

Abstract: With the rapid development of reticular chemistry, an increasing number of covalent organic frameworks(COFs) have been designed and synthesized over the past decades. Owing to the large surface areas, numerous active sites, and high chemical stability, recent effects gradually were made to investigate the interaction with various small molecules. Among the reported application areas, sensorics is an attractive field, where COFs have exhibited tremendous potential and acquired high- performance sensitivity and selectivity due to their structural merits. In this review, we highlighted the recent progress of COFs as sensors for the detection of various analytes, mainly depending on the analysis of change of fluorescence signals. The basic principles of physics for fluorescence-based sensors were briefly discussed for better understanding of the relationship between structures and functions of COFs. Moreover, we reviewed various classes of small molecule analytes that have been successfully detected by COFs, including explosives, gases, humidity, metal ions, pH, and biological molecules. In this work, we detailedly discussed the components of COFs, functional sites, and sensing performance in each sensing application, aiming to disclose their intrinsic connection. This review also concluded with several issues to be solved and provided the outlook for the future development direction for practical applications.

Key words: Covalent organic framework(COF), Sensing, Fluorescence, Porous polymer