FIGURE 3.

Composition and structural analysis of the P-, PC-, and PCN-coated surfaces. (A) Atomic concentrations (%) of carbon (black), nitrogen (red), titanium (blue), and copper (green) on P-, PC-, and PCN-coated surfaces. (B) Area (%) below the Cu(II) related peaks (blue) and Cu(0) or Cu(I) related peaks (green) in the Cu 2p spectra for PC and PCN-coated surfaces. (C) FTIR spectra of the peptide (black), a mixture of the peptide and CuCl₂ (red), and a mixture of the peptide, CuCl₂, and NaBH₄ (blue).