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- W2820123022 abstract "Mercury ion (Hg2+) is one of the most toxic heavy metals that has severe adverse effects on the environment and human organs even at very low concentrations. Therefore, highly sensitive and selective detection of Hg2+ is desirable. Here, we introduce plasmonic micropinball constructed from Au nanooctahedron as a three-dimensional surface-enhanced Raman spectroscopy (SERS) platform, enabling ultrasensitive detection of trace Hg2+ ions. Typically, strong SERS signals could be obtained when the single-stranded DNA structure converts to the hairpin structure in the presence of Hg2+ ions, due to the formation of thymine (T)–Hg2+–T. As a result, the detection limit of Hg2+ ions is as low as 1 × 10–16 M, which is far below compared to that reported for conventional analytical strategies. Moreover, to achieve rapid multiple detection, we combine the micropinball sensors with microflow tube online detection. Our platform prevents cross-talk and tube contamination, allowing multiassay analysis, rapid identification, and quantification of different analytes and concentrations across separate phases." @default.
- W2820123022 created "2018-07-19" @default.
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- W2820123022 date "2018-07-06" @default.
- W2820123022 modified "2023-10-02" @default.
- W2820123022 title "Ultrasensitive Au Nanooctahedron Micropinball Sensor for Mercury Ions" @default.
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- W2820123022 doi "https://doi.org/10.1021/acsami.8b04414" @default.
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