Study of excited states of fluorinated copper phthalocyanine by inner shell excitation

K. K. Okudaira, H. Setoyama, H. Yagi, K. Mase, S. Kera, Antoine Kahn, N. Ueno

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Near edge X-ray absorption fine structure (NEXAFS) spectra of hexadecafluoro copper phthalocyanine (FCuPc) films (thickness of 50Å) on MoS2 substrates were observed near the carbon (C) and fluorine (F) K-edges. From the analysis of the dependence of C and F K-edge NEXAFS spectra on the photon incidence angle (α), the average molecular tilt angle was determined to be 30°. The lowest and second lowest peaks in the F K-edge NEXAFS were assigned to the transition to σ*. In the ion time-of-flight mass spectra of FCuPc excited by photons near the F K-edge, F+, CF+, and CF3+ ions were mainly observed. These results indicate that C-C bonds as well as C-F bonds are broken by the photon irradiation. From the analysis of the partial ion yield spectra of F+ and CF+ near the F K-edge, the lowest and second lowest peaks in the F K-edge NEXAFS spectra could be assigned to transitions to σ(C-F)* and σ(C-C)>*, respectively.

Original languageEnglish (US)
Pages (from-to)137-140
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume137-140
Issue numberSPEC. ISS.
DOIs
StatePublished - Jul 1 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Radiation
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

Keywords

  • Fluorinated copper phthalocyanine
  • Inner shell excitation
  • Site-specific chemical bond scission
  • Unoccupied state

Fingerprint Dive into the research topics of 'Study of excited states of fluorinated copper phthalocyanine by inner shell excitation'. Together they form a unique fingerprint.

  • Cite this