Photoelectron spectroscopy of pyrene cluster anions, (pyrene) n- (n=1-20)

Naoto Ando, Shinsuke Kokubo, Masaaki Mitsui, Atsushi Nakajima

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Abstract

Pyrene molecular anion and its homogeneous clusters, (pyrene) n- (n=2-20), have been studied by anion photoelectron spectroscopy. The adiabatic electron affinity (EAa) of pyrene was directly determined to be 0.406±0.010 eV. This EAa value agrees with that calculated using the method of density functional theory, showing that the excess electron occupies the lowest unoccupied molecular orbital of pyrene molecule. Photoelectron spectra of its cluster anions suggest that the excess electron in the pyrene dimer anion is delocalized over the two pyrene moieties, whereas in larger clusters the excess electron is predominantly localized on a single pyrene molecule.

Original languageEnglish
Pages (from-to)279-283
Number of pages5
JournalChemical Physics Letters
Volume389
Issue number4-6
DOIs
Publication statusPublished - 2004 May 11

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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