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Variable Frequency Conductivity of Layered Polypyrrole / V2O5 Composites

Published online by Cambridge University Press:  15 February 2011

D. C. DeGroot ,
J. L. Schindler ,
C. R. Kannewurf ,
Y.-J. Liu ,
C.-G. Wu  and
M. G. Kanatzidis
D. C. DeGroot
Affiliation:
Department of Electrical Engineering and Computer Science and the Materials Research Center, Northwestern University, Evanston, IL 60208
J. L. Schindler
Affiliation:
Department of Electrical Engineering and Computer Science and the Materials Research Center, Northwestern University, Evanston, IL 60208
C. R. Kannewurf
Affiliation:
Department of Electrical Engineering and Computer Science and the Materials Research Center, Northwestern University, Evanston, IL 60208
Y.-J. Liu
Affiliation:
Department of Chemistry and the Center for Fundamental Materials Research, Michigan State University, East Lansing, MI 48824
C.-G. Wu
Affiliation:
Department of Chemistry and the Center for Fundamental Materials Research, Michigan State University, East Lansing, MI 48824
M. G. Kanatzidis
Affiliation:
Department of Chemistry and the Center for Fundamental Materials Research, Michigan State University, East Lansing, MI 48824
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Abstract

The frequency dependent electrical properties of the intercalated polypyrrole/V2O5 system have been measured. This study continues the investigation into the charge transport mechanisms that have been identified in these layered polymer/inorganic composites. The polypyrrole/V2O5 material is prepared by in-situ oxidative polymerization of pyrrole in the intralamellar space of the V2O5 xerogel. This process produces a layered, two-dimensional structure in which the charge transport properties result from two parallel conduction paths: the polypyrrole chains and the V2O5 layers. Impedance spectroscopy data have been collected from free-standing film samples of the layered polypyrrole/V2O5. The experiments were conducted over the frequency range of 10 Hz to 0.5 GHz and a temperature range of 77 to 310 K. The polypyrrole/V2O5 impedance results are presented in various equivalent forms and compared to data collected from pristine V2O5·nH2O, and reduced Cs0.14V2O5·nH2O.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 274: Symposium R – Submicron Multiphase Materials , 1992 , 133
Copyright
Copyright © Materials Research Society 1992

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References

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