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Progress in Chemistry DOI: 10.7536/PC230913   

MOFs based photoelectrochemical sensing interface and its applications

Cunyin Zhou1, Juan Huang1, Qiong Wang1,2,*, Hao Tang2, Yunchu Hu1, Wenlei Wang1   

  1. 1. College of Science, Central South University of Forestry and Technology, Changsha 410004, China;
    2. Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, China
  • Received: Revised:
  • Contact: *e-mail: wangqiong@csuft.edu.cn
  • Supported by:
    National Natural Science Foundation of China under grants (41977129), Hunan Provincial Natural Science Foundation of China (2022JJ90020), Excellent Youth Funding of Hunan Provincial Education Department of China (22B0246).
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Photoelectrochemical sensing analysis is a rapidly developing new analytical technology in recent years, and the photoelectric active materials are the key to photoelectrochemical sensing detection. Metal-organic frameworks (MOFs) and their derivatives may be ideal carriers for the construction of photoelectrochemical sensing interfaces by dispersing photoelectrically active substances. Due to the "antenna effect" of organic ligands in MOFs, the metal clusters can be regarded as activated discrete semiconductor quantum dots, giving them photoelectric properties similar to those of semiconductors. The modification of MOFs materials with carbon-based compounds, organic polymers, noble metal nanoparticles, inorganic oxides, quantum dots, and the construction of MOFs-based photoelectrochemical sensing interfaces, can improve the electrical conductivity of MOFs, promote the separation of photogenerated electrons - holes, and thus improve the photoelectric conversion efficiency. The MOFs based photoelectrochemical sensing interfaces amplify the signal generated by photoelectrochemical sensing, enabling ultra sensitive detection of the target object. Based on these, this paper provides a detailed introduction to the photoelectric activity mechanism, synthesis methods, and strategies for constructing photoelectric activity interfaces of MOFs based materials. The applications of MOFs based materials in photoelectrochemical sensing detection of small molecule compounds, immunoassay, enzyme activity and environmental analysis in recent years are comprehensively reviewed. Finally, current challenges and future perspectives in this field are also proposed.
Key words: MOFs-based materials, photoelectrochemical sensing interface, photoelectrochemical sensing analysis

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