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- W1856402868 abstract "Nanocomposites of graphene oxide and gold nanoparticles (GO/GNPs) were synthesized for label-free detections of amino acids. Interactions between the composites and amino acids were investigated by both naked-eye observation and optical absorption spectroscopy. The GO/GNPs composites displayed apparent color changes and absorption spectra changes in presences of amino acids including glutamate, aspartate, and cysteine. The interaction mechanisms of the composites and amino acids were discussed and explored with sulfhydryl groups and non-α-carboxylic groups on the amino acids. Sensing properties of the composites were tested, while pure gold particles were used as the control. The results suggested that the GO/GNPs composites had better linearity and stability in dose-dependent responses to the amino acids than those of the particles, especially in detections for acidic amino acids. Therefore, the nanocomposites platform can provide a convenient and efficient approach for label-free optical detections of important molecules such as amino acids." @default.
- W1856402868 created "2016-06-24" @default.
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- W1856402868 date "2016-03-01" @default.
- W1856402868 modified "2023-10-16" @default.
- W1856402868 title "Label-free amino acid detection based on nanocomposites of graphene oxide hybridized with gold nanoparticles" @default.
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- W1856402868 doi "https://doi.org/10.1016/j.bios.2015.10.065" @default.
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