575728.fig.005a
(a)
575728.fig.005b
(b)
Figure 5: Comparison of the Raman spectra among [DEME][BF4]-H2O, [DEME][I]-H2O, and [DEME][Br]-H2O at 𝑥 = 6 5 in the liquiud state. Peak intensities are normalized by the strongest peak of CH stretching vibrational mode of [DEME]+ cation. (a) The CH and OH stretching vibrational modes of the solutions and (b) the OH stretching vibrational region.