Journal
ANALYTICA CHIMICA ACTA
Volume 1223, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.aca.2022.340204
Keywords
Covalent organic framework nanosheet; Aptamer; Electrochemical aptasensor; Electrochemical impedance spectroscopy; Tobramycin
Categories
Funding
- Postgraduate Innovative Research Projects of Tianjin Normal University [2022KYCX037Z]
- Opening Project of Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
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The development of covalent organic framework nanosheet (COF NS) is an important research field due to its high permeability, ordered structure, high utilization of functional site, favourable dispersability, and large aspect ratio. In this study, Tp-Bpy COF NS was fabricated and used as a functional material for constructing an electrochemical aptasensor, showing enhanced biosensing performance for tobramycin detection.
The development of covalent organic framework nanosheet (COF NS) is becoming a vitally important research field by reason of its high permeability, ordered structure, high utilization of functional site, favourable dispersability and large aspect ratio, resulting in their widespread applications in separation, catalysis, sensing and optical device. In this work, a Tp-Bpy COF NS was prepared via an interfacial synthesis of 2,4,6-triformylphloroglucinol (Tp) and 5,5'-diamino-2,2'-bipyridine (Bpy), which has film morphology, high surface area, large pore, excellent stability and various functional site. It was utilized as a functional material to immobilize aptamers for constructing a sensitive electrochemical aptasensor. Compared with bulk Tp-Bpy COF, Tp-Bpy COF NS can significantly enhance the biosensing performance toward ultra-trace tobramycin. This work is benefit for the exploration of COF NSs and their electrochemical aptasensors in biosensing applications.
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