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Conducting Molecular Multilayers: Intercalation of Conjugated Polymers in Layered Media

Published online by Cambridge University Press:  21 February 2011

V. Mehrotra  and
E.P. Giannelis
V. Mehrotra
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
E.P. Giannelis
Affiliation:
Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853
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Abstract

Polyaniline has been synthesized in the galleries of fluorohectorite, a two-dimensional mica-type layered silicate. Intercalation of aniline in the intracrystalline region of Cu-exchanged fluorohectorite results in oxidative polymerization to polyaniline (emeraldine base form) as demonstrated by electronic, infrared and Raman spectroscopy and x-ray diffraction data. The intercalated insulating form of polyaniline becomes conducting on exposure to HCl. In-plane electrical conductivity data measured in the temperature range 274 to 573 K show a complex thermally activated behavior with room temperature conductivity 0.05 Ohm−1cm−1. The polyaniline/layered silicate hybrids represent a new class of nanocomposites consisting of synthetic conductors with molecular dimensions contained in a quasi twodimensional environment of a crystalline host.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 171: Symposium O – Polymer Based Molecular Composites , 1989 , 39
Copyright
Copyright © Materials Research Society 1990

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References

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