Dynamics of O2 photodesorption from metal clusters : a significant difference from bulk behaviour

Niemietz, Marco; Koyasu, Kiichirou; Ganteför, Gerd; Kim, Young Dok

Dynamics of O2 photodesorption from metal clusters : a significant difference from bulk behaviour

Dateien

chemphyslett438.pdfGröße: 340.52 KBDownloads: 308

Datum

2007

Autor:innen

Niemietz, Marco

Koyasu, Kiichirou

Ganteför, Gerd

Kim, Young Dok

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Chemical Physics Letters. 2007, 438(4-6), pp. 263-267. Available under: doi: 10.1016/j.cplett.2007.03.016

Zusammenfassung

Photodesorption of O2 from size-selected AgnO-2 cluster anions with n = 2, 3, 4 and 8 was studied using time-resolved photoelectron spectroscopy (TR-PES). The spectra indicate that relaxations of photo-excited AgnO-2 clusters with n = even numbers accompany ultrafast direct O2 photodesorption. For the odd-numbered cluster Ag3O-2, in contrast, a long-lived excited state is observed, since O2 might be dissociatively chemisorbed, suppressing direct photodesorption of oxygen. Both, direct desorption and long-lived excited states, have not been observed from adsorbate covered metal surfaces, suggesting unique photochemical properties of such small clusters.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

NIEMIETZ, Marco, Kiichirou KOYASU, Gerd GANTEFÖR, Young Dok KIM, 2007. Dynamics of O2 photodesorption from metal clusters : a significant difference from bulk behaviour. In: Chemical Physics Letters. 2007, 438(4-6), pp. 263-267. Available under: doi: 10.1016/j.cplett.2007.03.016

BibTex

@article{Niemietz2007Dynam-5292,
  year={2007},
  doi={10.1016/j.cplett.2007.03.016},
  title={Dynamics of O2 photodesorption from metal clusters : a significant difference from bulk behaviour},
  number={4-6},
  volume={438},
  journal={Chemical Physics Letters},
  pages={263--267},
  author={Niemietz, Marco and Koyasu, Kiichirou and Ganteför, Gerd and Kim, Young Dok}
}

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