Sea urchin-like Ni 3 (HITP) 2 as the substrate of molecular imprinted polymer: the voltammetric mechanism for sensitive detection of dopamine

An electrochemical sensor composed of conductive metal-organic framework [Ni (HITP) ] and molecular imprinted polymers (MIP) is fabricated to detect dopamine. Ni (HITP) promotes electrons transfer due to the structure of in-plane charge delocalization and layered expansion conjugation. The combinati...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2024-09, Vol.191 (10), p.605
Main Authors: Zhang, Xia, Su, Jishan, Sun, Lili, Ben, Yingying, Sun, Yizhan, Wei, Yajun, Xu, Yuandong
Format: Article
Language:English
Subjects:
Catechols - chemistry
Dopamine - chemistry
Electrochemical Techniques - instrumentation
Electrochemical Techniques - methods
Electrodes
Limit of Detection
Metal-Organic Frameworks - chemistry
Molecularly Imprinted Polymers - chemistry
Nickel - chemistry
Oxidation-Reduction
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Summary:An electrochemical sensor composed of conductive metal-organic framework [Ni (HITP) ] and molecular imprinted polymers (MIP) is fabricated to detect dopamine. Ni (HITP) promotes electrons transfer due to the structure of in-plane charge delocalization and layered expansion conjugation. The combination of MIP with Ni (HITP) improves the selectivity and conductivity, exhibiting a wide detection range (0.06 ~ 200 µM) and a low detection limit (0.109 µM). The kinetic mechanism on the electrode surface is an adsorption controlled process, with the equal number of electrons and protons participating in oxidation in the electrocatalytic process of catechol converting to o-quinone.
ISSN:1436-5073
DOI:10.1007/s00604-024-06680-y