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- W2090174923 abstract "This work developed a novel method to greatly enhance the electrochemiluminescence (ECL) of CdS quantum dots (QDs). The ECL amplification was achieved by the assembly of QDs on poly (diallyldimethylammonium chloride)-functionalized carbon nanospheres (PFCNSs), and successfully employed for sensitive ECL biosensing of oxidase substrates. The carbon nanospheres were prepared by a “green” method, and the high loading of QDs on carbon nanospheres led to a 4-times increased ECL intensity with dissolved O2 as the coreactant. Using xanthine oxidase (XOD) as a model, an ECL biosensor was fabricated by immobilizing the enzyme on the mixing membrane of PFCNSs and QDs. The ECL biosensor showed a fast response to hypoxanthine with a linear concentration range from 2.5 × 10−8 to 1.4 × 10−5 M. The limit of detection was 5 nM at a signal-to-noise ratio of 3. The assay results of hypoxanthine in fish samples were in a good agreement with the reference values by amperometric technique. This facile approach to prepare the PFCNSs/QDs system for ECL biosensing could be of promising application in bioanalysis and electronic device." @default.
- W2090174923 created "2016-06-24" @default.
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- W2090174923 date "2011-09-01" @default.
- W2090174923 modified "2023-10-17" @default.
- W2090174923 title "Carbon nanospheres enhanced electrochemiluminescence of CdS quantum dots for biosensing of hypoxanthine" @default.
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- W2090174923 doi "https://doi.org/10.1016/j.talanta.2011.07.059" @default.
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