Size-Dependent Dielectric Properties of Liquid Water Clusters

摘要

A large absorption peak has been observed in the far infrared spectrum of water confined within inverse micelles of sodium bis(2-ethylhexyl) sulfosuccinate (AOT) in heptane. The amplitude and spectral position of this peak depend on the size of the water pool. The proposed origin of these spectral features lies in surface oscillations of the water pool. The presence of a large excess in the vibrational density of states of confined water could have far-ranging implications in many biochemical and chemical processes where confined water is present.