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Edyta Proniewicz, Dominika Skołuba, Ilja Ignatjev, Gediminas Niaura, Dariusz Sobolewski, Adam Prahl and Leonard M. Proniewicz Influence of applied potential on bradykinin adsorption onto Ag, Au, and Cu electrodes Journal of Raman Spectroscopy 44

Article first published online: 29 JAN 2013 | DOI: 10.1002/jrs.4246

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Surface-enhanced Raman scattering, electrochemistry, and generalized two-dimensional correlation analysis methods were used to characterize bradykinin (BK), a hormone which is known to be involved in small-cell and non-small-cell lung carcinoma and prostate cancer. BK was deposited onto Ag, Au, and Cu electrode surfaces under different applied electrode potentials (−1.000 V to 0.200 V). Based on the analysis of the enhancement, the broadening, and the shifts in the wavenumbers of individual bands, specific conclusions were drawn regarding the peptide geometry and changes in this geometry that occurred when the electrode type and applied electrode potential were varied.

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