Pritchard Faith G, Jordan Caleb J C, Verlet Jan R R
Department of Chemistry, Durham University, Durham DH1 3LE, United Kingdom.
J Chem Phys. 2024 Nov 7;161(17). doi: 10.1063/5.0235875.
Photo-dynamics can proceed differently at the water/air interface compared to in the respective bulk phases. Second-order non-linear spectroscopy is capable of selectively probing the dynamics of species in such an environment. However, certain conclusions drawn from vibrational and electronic sum-frequency generation spectroscopies do not agree as is the case for the formation and structure of hydrated electrons at the interface. This Perspective aims to highlight these apparent discrepancies, how they can be reconciled, suggests how the two techniques complement one another, and outline the value of performing both techniques on the same system.
与各自的本体相相比，光动力学在水/空气界面的进行方式可能不同。二阶非线性光谱能够选择性地探测这种环境中物质的动力学。然而，从振动和电子和频产生光谱得出的某些结论并不一致，例如界面处水合电子的形成和结构情况。本观点旨在突出这些明显的差异、如何调和这些差异、说明这两种技术如何相互补充，并概述在同一系统上同时应用这两种技术的价值。
