期刊
BIOSENSORS & BIOELECTRONICS
卷 99, 期 -, 页码 471-478出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2017.08.022
关键词
Glucose-imprinted polymer; Hierarchical CuCo catalyst; Nonenzymatic sensor; Aminophenyl boronic acid; Electrochemical glucose detection
类别
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2015R1A2A1A13027762]
- Next Generation Mobile Team, DMC R & D center of Samsung Electronics Co. Ltd. (S. Korea, Seoul)
A selective nonenzymatic glucose sensor was developed based on the direct oxidation of glucose on hierarchical CuCo bimetal-coated with a glucose-imprinted polymer (GIP). Glucose was introduced into the GIP composed of Nafion and polyurethane along with aminophenyl boronic acid (APBA), which was formed on the bimetal electrode formed on a screen-printed electrode. The extraction of glucose from the GIP allowed for the selective permeation of glucose into the bimetal electrode surface for oxidation. The GIP-coated bimetal sensor probe was characterized using electrochemical and surface analytical methods. The GIP layer coated on the NaOH pretreated bimetal electrode exhibited a dynamic range between 1.0 mu M and 25.0 mM with a detection limit of 0.65 +/- 0.10 mu M in phosphate buffer solution (pH 7.4). The anodic responses of uric acid, acetaminophen, dopamine, ascorbic acid, L-cysteine, and other saccharides (monosaccharides: galactose, mannose, fructose, and xylose; disaccharides: sucrose, lactose, and maltose) were not detected using the GIP-coated bimetal sensor. The reliability of the sensor was evaluated by the determination of glucose in artificial and whole blood samples.
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