Journal
CHINESE CHEMICAL LETTERS
Volume 32, Issue 6, Pages 2061-2065Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2020.10.001
Keywords
Covalent organic frameworks; Conducting polymer; Electrochemical sensor; Ultrasensitive detection; Acetaminophen
Categories
Funding
- National Natural Science Foundation of China [21205103]
- Jiangsu Provincial Natural Science Foundation [BK2012258]
- Young and Middle-aged Academic Leaders Foundation of Yangzhou University
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions (TAPP)
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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A core-shell material composed of TAPB-DMTP-COF core and conducting polymer shell, TAPB-DMTP-COF@PANI, was successfully synthesized and showed promising performance in electrochemical sensor applications for detecting acetaminophen, indicating its potential for practical use.
Two-dimensional covalent organic framework (COF) has distinctive properties that offer potential opportunities for developing advanced electrode materials. In this work, a core-shell material composed of TAPB-DMTP-COF (TAPB, 1,3,5-tris(4-aminophenyl)benzene; DMTP, 2,5-dimethoxyterephaldehyde) core and conducting polymer shell, TAPB-DMTP-COF@PANI, was synthesized solvothermally using a polymerization method. The structural characteristics of the prepared composite were revealed by X-ray diffraction patterns (XRD), fourier transform infrared spectra (FTIR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM). The electrochemical analyses were verified by subsequent monitoring of trace levels of acetaminophen. This resultant composite not only facilitated acetaminophen to interact with absorption sites by pi-pi stacking effect and hydrogen bonding but also overcame the poor conductivity of COF. Under the optimal conditions, a low limit of detection of 0.032 mu mol/L and wide linear range of 0.10-500 mu mol/L were obtained. The electrochemical platform was almost unaffected by other interfering substances, and successfully applied for the practical detection of acetaminophen in commercial tablet, human blood serum and urine. The enhanced performance makes this COF based core-shell composite a promising material in electrochemical sensor. (C) 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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