Collision-energy-resolved metastable impact electron spectroscopy of thiophene and 2,2′-bithiophene: Stereodynamics in gas phase and adsorbed layer on Ag(110)

S. Kudo, N. Kishimoto, K. Ohno

Research output: Contribution to journalConference article

Abstract

2,2′-bithiophene in the gas phase was studied by ultraviolet photoelectron spectroscopy (UPS) and two-dimensional Penning ionization electron spectroscopy (2D-PIES) to obtain the information of stereodynamics in Penning ionization and anisotropic interaction around the ionization region. Thiophene and the 2,2′-bithiophene layer on a Ag(110) surface were investigated by two-dimensional metastable impact electron spectroscopy (2D-MIES). From the relative intensity in the UPS and PIES spectra and the collision energy dependence of partial ionization cross sections (CEDPICS) for 2,2′-bithiophene, ionization bands were assigned to π orbitals. A comparison with the CEDPICS for a gas molecule and the molecular layer on Ag(110) revealed that the attractive interaction between He*(2 3S) and both thiophene and 2,2-bithiophene was weak due to the formed molecular layer.

Original languageEnglish
Article number012012
JournalJournal of Physics: Conference Series
Volume235
Issue number1
DOIs
Publication statusPublished - 2010 Jan 1
EventInternational Workshop on Electronic Spectroscopy for Gas-phase Molecules and Solid Surfaces, IWES2009 - Matsushima, Japan
Duration: 2009 Oct 122009 Oct 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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