Modeling the low frequency vibrational spectroscopy of ionic solutions

Abstract

Low frequency vibration spectroscopy plays a unique role in studying the interaction between ions and water molecules. This review discusses some recent efforts in modeling and analyzing the low frequency vibration spectra of ionic solutions. Issues in current theoretical simulation and concerns for further investigations are also addressed. The low frequency vibration spectrum of ionic solutions contains information of various dynamical behaviors. Combination of theoretical modeling and experimental spectrum can reveal important mechanism on the interaction between ions and water molecules. In this manuscript, our recent efforts on properly modeling and analyzing the low frequency vibrational spectra of the ionic solutions, mainly dielectric relaxation spectroscopy and optical Kerr effect, are reviewed. Issues in current theoretical simulation and concerns for further investigations are also addressed.