Fig. 7. (a and b) Position and (c and d) width of the (a and c) v(CH2)s and (b and d) v(CH2)as bands as a function of potential for fBLM (curves 1, 1′, 1′′, and 1′′′), fBLM-AβM (curves 2, 2′, 2′′, and 2′′′), and fBLM-AβO (curve 3, 3′, 3′′, and 3′′′) in the PBS/D2O (0.01 M phosphate buffer, 0.0027 M KCl and 0.137 M NaCl, pH = 7.4) solution. CH2(s) and CH2(as) stand for symmetric and asymmetric CH2 stretching vibrations, respectively. The upper abscissa plots the transmembrane potential that accounts for the potential of zero free charge (Epzfc = 0.11 V vs. Ag/AgCl).
