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Studies of femtosecond time-resolved photoelectron spectroscopy of Au3 (H2O)m clusters: Alteration of cluster relaxation dynamics of metal clusters by water molecules

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2012

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Seo, Hyun Ook
Kim, Young Dok

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https://doi.org/10.1016/j.cplett.2012.01.078
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Chemical Physics Letters. Elsevier. 2012, 530, pp. 35-38. ISSN 0009-2614. eISSN 1873-4448. Available under: doi: 10.1016/j.cplett.2012.01.078

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Relaxation dynamics of optically excited states of and (H2O)m were studied via femtosecond time-resolved photoelectron spectroscopy (fsTRPES). exhibits photo-dissociation into either ( + Au1) or (Au2 + ) with a time constant of 1.6 ns. One water molecule adsorbed on opened new photo-induced dissociation channel with a much shorter time constant. More than one water molecule on inhibited photo-dissociation, most likely as a result of facile dissipation of excess energy of optically excited states by nuclear motions of clusters. The photochemical pathway can be controlled by adjusting the number of water molecules interacting with the ionic species.

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ISO 690BRAUN, Christian, Sebastian PROCH, Hyun Ook SEO, Young Dok KIM, Gerd GANTEFÖR, 2012. Studies of femtosecond time-resolved photoelectron spectroscopy of Au3 (H2O)m clusters: Alteration of cluster relaxation dynamics of metal clusters by water molecules. In: Chemical Physics Letters. Elsevier. 2012, 530, pp. 35-38. ISSN 0009-2614. eISSN 1873-4448. Available under: doi: 10.1016/j.cplett.2012.01.078
BibTex
@article{Braun2012Studi-49202,
  year={2012},
  doi={10.1016/j.cplett.2012.01.078},
  title={Studies of femtosecond time-resolved photoelectron spectroscopy of Au<sub>3</sub> (H<sub>2</sub>O)<sub>m</sub> clusters: Alteration of cluster relaxation dynamics of metal clusters by water molecules},
  volume={530},
  issn={0009-2614},
  journal={Chemical Physics Letters},
  pages={35--38},
  author={Braun, Christian and Proch, Sebastian and Seo, Hyun Ook and Kim, Young Dok and Ganteför, Gerd}
}
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    <dcterms:abstract xml:lang="eng">Relaxation dynamics of optically excited states of and (H2O)m were studied via femtosecond time-resolved photoelectron spectroscopy (fsTRPES). exhibits photo-dissociation into either ( + Au1) or (Au2 + ) with a time constant of 1.6 ns. One water molecule adsorbed on opened new photo-induced dissociation channel with a much shorter time constant. More than one water molecule on inhibited photo-dissociation, most likely as a result of facile dissipation of excess energy of optically excited states by nuclear motions of clusters. The photochemical pathway can be controlled by adjusting the number of water molecules interacting with the ionic species.</dcterms:abstract>
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