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- W2737946591 abstract "A sensitive fluorescent detection platform for Hg2+ was constructed based on mercaptosuccinic acid (MSA) coated near-infrared (NIR)-emitting gold nanoparticles (AuNPs). The thiolated mercaptosuccinic acid was employed as both reducing agent and surface coating ligand in a one-step synthesis of NIR-emitting AuNPs (MSA-AuNPs), which exhibited stable fluorescence with the maximum wavelength at 800nm and a wide range of excitation (220-650nm) with the maxima at 413nm. The MSA coated NIR-emitting AuNPs showed a rapid fluorescence quenching toward Hg2+ over other metal ions with a limit of detection (LOD, 3δ) as low as 4.8nM. The sensing mechanism investigation revealed that the AuNPs formed aggregation due to the recognition of Hg2+ from the MSA, and the resultant strong coupling interaction between Hg2+ and Au (I) to further quench the fluorescence of the AuNPs, which synergistically resulted in a highly sensitive and selective fluorescence response toward Hg2+. This proposed strategy was also demonstrated the possibility to be used for Hg2+ detection in water samples." @default.
- W2737946591 created "2017-07-31" @default.
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- W2737946591 date "2018-01-01" @default.
- W2737946591 modified "2023-09-24" @default.
- W2737946591 title "Mercaptosuccinic acid-coated NIR-emitting gold nanoparticles for the sensitive and selective detection of Hg2+" @default.
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- W2737946591 doi "https://doi.org/10.1016/j.saa.2017.07.035" @default.
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