Accurate vertical ionization energy and work function determinations of liquid water and aqueous solutions.

ABSTRACT: The absolute-scale electronic energetics of liquid water and aqueous solutions, both in the bulk and at associated interfaces, are the central determiners of water-based chemistry. However, such information is generally experimentally inaccessible. Here we demonstrate that a refined implementation of the liquid microjet photoelectron spectroscopy (PES) technique can be adopted to address this. Implementing concepts from condensed matter physics, we establish novel all-liquid-phase vacuum and equilibrated solution-metal-electrode Fermi level referencing procedures. This enables the precise and accurate determination of previously elusive water solvent and solute vertical ionization energies, VIEs. Notably, this includes quantification of solute-induced perturbations of water's electronic en

SUBMITTER: Thurmer S 

PROVIDER: S-EPMC8356740 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature