Spectroscopy and dynamics of the hydrated electron at the water/air interface.

ABSTRACT: The hydrated electron, e^-_(aq), has attracted much attention as a central species in radiation chemistry. However, much less is known about e^-_(aq) at the water/air surface, despite its fundamental role in electron transfer processes at interfaces. Using time-resolved electronic sum-frequency generation spectroscopy, the electronic spectrum of e^-_(aq) at the water/air interface and its dynamics are measured here, following photo-oxidation of the phenoxide anion. The spectral maximum agrees with that for bulk e^-_(aq) and shows that the orbital density resides predominantly within the aqueous phase, in agreement with supporting calculations. In contrast, the chemistry of the interfacial hydrated electron diff

SUBMITTER: Jordan CJC 

PROVIDER: S-EPMC10762076 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature