Femtosecond Time-Resolved Photoelectron Spectroscopy of Molecular Anions

Alice Kunin, Daniel M. Neumark

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Scopus citations

Abstract

Femtosecond time-resolved photoelectron spectroscopy (TRPES) is a powerful technique to probe the ultrafast excited state dynamics ofmolecules.TRPES applied to gas-phase molecular anions and clusters is capable of probing not only excited state formation and relaxation but also electron accommodation dynamics upon injection of an excess electron into a solvent or molecule.We review the basics of TRPES as it applies to molecular anions and several applications including the study of electron solvation dynamics in clusters and excited state relaxation in several biomolecules. We then explore in detail the dynamics of electron attachment and photodissociation in iodide-nucleobase clusters studied by TRPES as a model system for examining radiative damage ofDNAinduced by low-energy electrons. By initiating charge transfer from iodide to the nucleobase and following the dynamics of the resulting transient negativeions with femtosecond time resolution, TRPES provides a novel window into the chemistry triggered by the attachment of low-energy electrons to nucleobases.

Original languageEnglish (US)
Title of host publicationPhysical Chemistry of Cold Gas-Phase Functional Molecules and Clusters
PublisherSpringer Singapore
Pages307-335
Number of pages29
ISBN (Electronic)9789811393716
ISBN (Print)9789811393709
DOIs
StatePublished - Jan 1 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Physics and Astronomy
  • General Biochemistry, Genetics and Molecular Biology
  • General Engineering

Keywords

  • Anion photoelectron spectroscopy
  • Femtochemistry
  • Nucleobases
  • Photodissociation
  • Photoexcitation

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