Time- and angle-resolved photoemission spectroscopy of hydrated electrons near a liquid water surface

Phys Rev Lett. 2014 May 9;112(18):187603. doi: 10.1103/PhysRevLett.112.187603. Epub 2014 May 8.

Abstract

We present time- and angle-resolved photoemission spectroscopy of trapped electrons near liquid surfaces. Photoemission from the ground state of a hydrated electron at 260 nm is found to be isotropic, while anisotropic photoemission is observed for the excited states of 1,4-diazabicyclo[2,2,2]octane and I- in aqueous solutions. Our results indicate that surface and subsurface species create hydrated electrons in the bulk side. No signature of a surface-bound electron has been observed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Electrons*
  • Models, Molecular
  • Photoelectron Spectroscopy / methods*
  • Piperazines / chemistry
  • Sodium Iodide / chemistry
  • Surface Properties
  • Water / chemistry*

Substances

  • Piperazines
  • Water
  • Sodium Iodide
  • triethylenediamine