Photoelectron spectra of AsF5-doped polyacetylenes
- 1 September 1979
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 71 (5) , 2044-2050
- https://doi.org/10.1063/1.438595
Abstract
The x‐ray and ultraviolet photoemission spectra of undoped polyacetylene, AsF5‐doped polyacetylene, AsF5, and AsF3 are reported and compared. At a doping level near where the electrical conductivity saturates (∼11% AsF5), the As:F ratio is 1:5 and a large fraction of the arsenic–fluoride moieties are localized near the surface of the polyacetylene fibrils. The C (1s) core‐level spectra indicate a charge transfer of about one electron per AsF5 molecule. The UPS spectra, the x‐ray induced Auger spectra and CNDO calculations suggest, however, that the arsenic pentafluoride moieties are not simple AsF5‐radical anions. At lower doping levels (0.1 to 1%) very different results are obtained.Keywords
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