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Enzymeless Electrochemical Glucose Sensor Based on Carboxylated Multiwalled Carbon Nanotubes Decorated with Nickel (II) Electrocatalyst and Self‐assembled Molecularly Imprinted Polyethylenimine
Author(s) -
Okhokhonin A.,
Stepanova V.,
Malysheva N.,
Matern A.,
Kozitsina A.
Publication year - 2021
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060177
Subject(s) - electrocatalyst , ascorbic acid , polyethylenimine , electrochemistry , electrochemical gas sensor , nuclear chemistry , chemistry , cyclic voltammetry , molecular imprinting , materials science , inorganic chemistry , selectivity , catalysis , organic chemistry , electrode , transfection , biochemistry , gene , food science
In this paper a new enzymeless electrochemical glucose sensor based on carboxylated multiwalled carbon nanotubes (cMWCNT) with immobilized nickel (II) acetylacetonate (NiL) as electrocatalyst and molecularly imprinted polymer fabricated through electrostatic self‐assembling of polyethyleneimine (PEI) crosslinked with glutaric dialdehyde (GDA). The electrocatalytic properties of NiL and PEI‐cMWCNT, PEI‐GDA and PEI‐glucose interactions is studied for the first time. Developed sensor demonstrates excellent electrocatalytic activity towards glucose oxidation and possessing high stability, sensitivity of 5897.42±161.00 μA ⋅ mM −1 cm −2 , LOD of 0.138 mM and high selectivity in the presence of creatinine, L‐alanine, glycine, D‐glutamine, uric acid, L‐ascorbic acid, urea and BSA.