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- W2964694010 abstract "We report a new fluorescent nanoprobe simply constructed by the surface modification of positively charged polyethylenimine (PEI)-coated gold nanoclusters (AuNCs) with 8-hydroxyquinoline-5-sulfonate (8Q5S) through electrostatic interaction. This nanoprobe showed the intrinsic emission of AuNCs at 650 nm and a weak emission at 490 nm from 8Q5S. Based on chelation-enhanced fluorescence of 8Q5S induced by its specific and high affinity for phosphate upon binding Mg2+ and the stable fluorescence of AuNCs as the reference, this nanoprobe was demonstrated to exhibit highly sensitive, selective, and reliable detection of phosphate in the linear range from 0 to 50 μM with a low detection limit of 0.14 μM. Furthermore, the presented ratiometric fluorescent sensor was successfully employed for accurate quantitation of phosphate in complex human serum samples with satisfactory results." @default.
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- W2964694010 date "2019-11-01" @default.
- W2964694010 modified "2023-10-18" @default.
- W2964694010 title "Ratiometric fluorescent detection of phosphate in human serum with functionalized gold nanoclusters based on chelation-enhanced fluorescence" @default.
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- W2964694010 doi "https://doi.org/10.1016/j.snb.2019.126891" @default.
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