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Identification of synthetic metals from the shape of the carbon KLL spectra by the pattern recognition method
Author(s) -
Lesiak B.,
Jablonski A.,
Zagorska M.,
Jozwik A.
Publication year - 1988
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740120804
Subject(s) - polyacetylene , dopant , auger electron spectroscopy , spectral line , carbon fibers , chemistry , doping , polymer , analytical chemistry (journal) , materials science , organic chemistry , composite material , optoelectronics , physics , astronomy , composite number , nuclear physics
The aim of the work was to verify the possibility of application of Auger electron spectroscopy in connection with the pattern recognition method to study the polymer surfaces. Synthetic metals were chosen for investigation. The carbon KLL spectra were analysed using the so‐called k ‐nearest neighbour rule. Analysis was performed for polyacetylene and polypyrrole doped with Fe(CN) 6 4−and FeCl 4 − ions. On the basis of the standard spectra recorded for all polymers the effective recognizing procedure was developed. Noticeable changes of spectra were observed on electrochemical removal of dopants. The analysis made after 90 days of ageing in vacuum revealed some spectra changes in doped polymers. These change may be due to the disappearance of dopants or to the deposition of contaminants. An electron beam of 300 nA at 1000 eV was found to affect the surface of polyacetylene.