Calculation of vibrational Sum Frequency Generation (SFG) spectra of the salt water surfaces from the molecular dynamics simulations

COLL 429

Eric C. Brown1, Martin Mucha2, Pavel Jungwirth2, and Douglas J. Tobias1. (1) Department of Chemistry, University of California, Irvine, Irvine, CA 92697, (2) J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Dolejskova 3, 182 23 Prague 8, Czech Republic
By means of classical molecular dynamics simulations we have studied the interface of alkali-halide (NaX, X=F,Cl,Br,I) water solutions. In particular, we have calculated the SFG vibrational spectra, and have attempted to interpret them in terms of molecular motions and to compare them to the available experimental data. The effect of correctly accounting for the atomic polarizability of the halide ions has been studied.