Author:
Chang Chia‐Yu,Chen Yu‐Mei,Huang Yu‐Bin,Lai Chin-Hung,Jeng U-Ser,Lai Ying-Huang
Abstract
AbstractUnder a controlled adsorption environment, L-cysteine molecules can be chemically adsorbed to the dendritic silver (Ag-D) surface by electrochemical methods with different functional groups. It is verified by surface-enhanced Raman spectroscopy that under alkaline conditions (pH = 13.50), the two functional groups of thiol and acid are simultaneously adsorbed on the surface of Ag-D, while NH2 is far from the surface; under acidic conditions (pH = 1.67), adsorption behavior suggests that both NH3+ and COO− are oriented toward the Ag-D surface, and that SH is far from the surface. The structure of L-cysteine adsorption under acidic conditions can be further verified by the addition of an L-cysteine molecule through light-induced coupling reaction to form cystine. Finally, in-situ two-dimensional Raman scattering spectroscopy confirmed the feasibility and uniformity of the coupling reaction.
Funder
Ministry of Science and Technology, Taiwan
Publisher
Springer Science and Business Media LLC
Cited by
10 articles.
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