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Schultz, Thomas
CRASY(Correlated Rotational Alignment Spectroscopy)
Research Interests
  • Correlated spectroscopy

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Time-resolved photoelectron spectroscopy of solvated electrons in aqueous NaI solution

Cited 34 times inthomson ciCited 33 times inthomson ci
Title
Time-resolved photoelectron spectroscopy of solvated electrons in aqueous NaI solution
Author
Luebcke, AndreaBuchner, FranziskaHeine, NadjaHertel, Ingolf V.Schultz, Thomas
Keywords
EUV SYNCHROTRON-RADIATION; HYDRATED ELECTRON; LIQUID WATER; FEMTOSECOND DYNAMICS; RELAXATION DYNAMICS; ULTRAFAST DYNAMICS; EXCESS ELECTRONS; PHOTODETACHMENT; CLUSTERS; ANION
Issue Date
201011
Publisher
ROYAL SOC CHEMISTRY
Citation
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.12, no.43, pp.14629 - 14634
Abstract
Time-resolved photoelectron spectroscopy was used to study the energetics and dynamics of solvated electrons in aqueous solution. Solvated electrons are generated by ultrafast photodetachment in a 100 mM aqueous NaI solution. Initially, an ensemble of strongly bound ("cold") solvated electrons and an ensemble of weakly bound ("hot") electrons in an unequilibrated solvent environment are observed. We report an ultrafast recombination channel for the "hot" electrons with a rate of (800 fs)(-1) which is in competition with thermalization occuring with a rate of (1.1 ps)(-1). The thermalized electrons recombine with the iodide radical with a rate of (22 ps)(-1). About 35% of the thermalized electrons escape geminate recombination and form free, solvated electrons. The vertical detachment energy for the solvated electron is determined to be 3.40 eV. No indication for a surface-bound electron at lower binding energies was observed.
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DOI
http://dx.doi.org/10.1039/c0cp00847h
ISSN
1463-9076
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