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Raman spectra during the electropolymerization of polypyrrole

Published online by Cambridge University Press:  31 January 2011

C. H. Olk ,
C. P. Beetz Jr.  and
J. Heremans
C. H. Olk
Affiliation:
Physics Department, General Motors Research Laboratories, Warren, Michigan 48090
C. P. Beetz Jr.
Affiliation:
Physics Department, General Motors Research Laboratories, Warren, Michigan 48090
J. Heremans
Affiliation:
Physics Department, General Motors Research Laboratories, Warren, Michigan 48090
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Abstract

In situ Raman spectra were taken, between 800 and 1200 cm−1, on films of polypyrrole during both the electrochemical growth and the reduction reactions. During the reduction reaction we observed a frequency shift of approximately 10 cm−1 of two in-plane vibrational modes. We attribute these shifts to the bond conjugational defects induced by doping and undoping of the polypyrrole films. A quantitative model for this phenomenon based on normal mode calculations is presented. The electrical conductivity and thermopower of polypyrrole doped with tetrafluoroborate and iron chloride ions is also reported for temperatures between 10 and 350K.

Type
Articles
Information
Journal of Materials Research , Volume 3 , Issue 5 , October 1988 , pp. 984 - 988
Copyright
Copyright © Materials Research Society 1988

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References

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