Importance of Electronic Relaxation for Inter-Coulombic Decay in Aqueous Systems

Craig P. Schwartz, Shervin Fatehi, Richard J. Saykally, and David Prendergast
Phys. Rev. Lett. 105, 198102 – Published 5 November 2010

Abstract

Inspired by recent photoelectron spectroscopy experiments on hydroxide solutions, we have examined the conditions necessary for enhanced (and, in the case of solutions, detectable) inter-Coulombic decay (ICD)—Auger emission from an atomic site other than that originally excited. We present general guidelines, based on energetic and spatial overlap of molecular orbitals, for this enhancement of inter-Coulombic decay-based energy transfer in solutions. These guidelines indicate that this decay process should be exhibited by broad classes of biomolecules and suggest a design criterion for targeted radiooncology protocols. Our findings show that photoelectron spectroscopy cannot resolve the current hydroxide coordination controversy.

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  • Received 21 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.198102

© 2010 The American Physical Society

Authors & Affiliations

Craig P. Schwartz1,2, Shervin Fatehi1,2,3, Richard J. Saykally1,2, and David Prendergast4,*

  • 1Department of Chemistry, University of California, Berkeley, California 94720, USA
  • 2Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
  • 3Kenneth S. Pitzer Center for Theoretical Chemistry, University of California, Berkeley, California, 94720 USA
  • 4Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California, 94720 USA

  • *dgprendergast@lbl.gov

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Vol. 105, Iss. 19 — 5 November 2010

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