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- W2602560757 abstract "A novel, low-cost and biocompatible three-dimensional (3D) substrate for surface-enhanced Raman spectroscopy (SERS) is fabricated using gold nanoparticles (AuNPs) loaded on cellulose paper for detection of amino acids and melamine. Dysosma pleiantha rhizome (Dp-Rhi) capped AuNPs (Dp-Rhi_AuNPs) were prepared by in situ using aqueous extract of Dp-Rhi and in situ functionalized Dp-Rhi on AuNPs surface was verified by Fourier transform infrared spectroscopy and zeta potentials analysis shows a negative (− 18.4 mV) surface charges, which confirm that presence of Dp-Rhi on AuNPs. The biocompatibility of Dp-Rhi_AuNPs is also examined by cell viability of FaDu cells using MTS assay and compared to control group. In conclusion, the SERS performance of [email protected] paper substrates were systematically demonstrated and examined with different excitation wavelengths (i.e. 532, 632.8 and 785 nm lasers) and the as-prepared 3D substrates provided an enhancement factor approaching 7 orders of magnitude compared with conventional Raman intensity using para-nitrothiophenol (p-NTP), para-aminothiophenol (p-ATP) and para-mercaptobenzoic acid (p-MBA) as probe molecules. The strong electromagnetic effect was generated at the interface of AuNPs and pre-treated roughened cellulose paper is also investigated by simulation in which the formation of possible Raman hot-spot zone in fiber-like microstructure of cellulose paper decorated with AuNPs. Notably, with optimized condition of as-prepared 3D [email protected] paper is highly sensitive in the SERS detection of aqueous tyrosine (10− 10 M) and melamine (10− 9 M)." @default.
- W2602560757 created "2017-04-07" @default.
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- W2602560757 date "2017-06-01" @default.
- W2602560757 modified "2023-09-23" @default.
- W2602560757 title "Biocompatible 3D SERS substrate for trace detection of amino acids and melamine" @default.
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- W2602560757 doi "https://doi.org/10.1016/j.saa.2017.03.040" @default.
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