Population lifetimes of OH(v=1) and OD(v=1) stretching vibrations of alcohols and silanols in dilute solution

Abstract

Picosecond infrared pump–probe experiments determined the vibrational population lifetimes (T₁) of the hydroxyl fundamental stretching mode OH(v=1) in 12 alcohols (R₃COH) and 8 silanols (R₃SiOH) in dilute room temperature CCl₄ solutions. T₁ for the silanols is in the range 185<T₁T₁ for the alcohols is much less (T₁T₁ lifetimes for these systems. Solution T₁ lifetimes are also compared to those previously measured for OH(v=1) on the surface of silica and in other condensed‐phase, room temperature systems.