In:
Scientific Reports, Springer Science and Business Media LLC, Vol. 9, No. 1 ( 2019-12-27)
Abstract:
Under 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 NH 2 is far from the surface; under acidic conditions (pH = 1.67), adsorption behavior suggests that both NH 3 + 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.
Type of Medium:
Online Resource
ISSN:
2045-2322
DOI:
10.1038/s41598-019-56517-5
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2019
detail.hit.zdb_id:
2615211-3
