The Signal Averaged P-Wave

Origin of the blueshift of water molecules at interfaces of hydrophilic cyclic compounds

“…This interaction causes the spectral peak around 3200 cm −1 to become red-shifted, as a response to changes in the strength of the H-bond (11,12). Nevertheless, some experimental studies have reported that a blueshift was also observed in the aqueous solutions of hydrophilic materials, for example, alkali halide ions (13) and acetonitrile (14). These controversial phenomena demonstrated by hydrophilic materials have been attributed to a combination of both interand intramolecular interactions.…”