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Synergistic Enhancement Effects of Carbon Quantum Dots and Au Nanoclusters for Cathodic ECL and Non‐enzyme Detections of Glucose
Author(s) -
Han Shuang,
Gao Yuan,
Li Lin,
Lu Beibei,
Zou Yongxing,
Zhang Ling,
Zhang Jiaheng
Publication year - 2020
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.201900645
Subject(s) - detection limit , electrochemiluminescence , nanoclusters , ascorbic acid , quantum dot , chemistry , carbon quantum dots , uric acid , linear range , urea , carbon fibers , inorganic chemistry , photochemistry , nuclear chemistry , analytical chemistry (journal) , materials science , nanotechnology , chromatography , organic chemistry , biochemistry , composite number , food science , composite material
In this study, we found that glucose enhance electrochemiluminescence (ECL) intensity of both Au nanoclusters (Au NCs) and carbon quantum dots (CQDs) with K 2 S 2 O 8 as the co‐reactants. The enhancing effects by Au NCs and CQDs were overlapped, enabling the detection of glucose. The increased ECL intensity of glucose was linear with the logarithm of concentrations of glucose in the range of 50 μM–3.0 mM, and the limit of detection is 20 μM. Anti‐interruption ability was achieved, and ascorbic acid, urea, and uric acid had little influence to glucose detection. This method realized the direct detection of glucose by enhancing ECL of Au NCs and CQDs, which was fast and economic, possessing potential applications for glucose detection in human serum.