FIGURE 5.

Polarized ATR-FTIR spectra of a complete monolayer of Drs B2 adsorbed at the ²H₂O/hydrophobic interface (top); spectral decomposition of the amide I′ band for the perpendicular polarization (middle) and for the parallel polarization (bottom). The component bands are the results of the curve fitting using the wavenumbers of the components set at 1633, 1646, 1657, and 1673 cm⁻¹ deduced from the FSD analysis (see Fig. 1 B). The Lorentzian/Gaussian profile was set at 0.25 and the bandwidth of the components at 22 cm⁻¹. The best-average fit gave the intensity of each component band for each spectrum.