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Synthesis, Structure, Infrared Spectra, and Iodine Doping of Unsubstituted Polyazines

Published online by Cambridge University Press:  25 February 2011

William B. Euler  and
Benjamin C. Gill
William B. Euler
Affiliation:
Department of Chemistry, University of Rhode Island, Kingston, RI 02881
Benjamin C. Gill
Affiliation:
Department of Chemistry, University of Rhode Island, Kingston, RI 02881
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Abstract

Polyazines, -[N=CH-CH=N]x-, are environmentally stable conjugated polymers that can be doped with iodine into an electrically conductive state. These polymers are prepared by the condensation of glyoxal and glyoxal di-hydrazone with acid catalysis. IR spectra of the undoped polymers, independent of the synthetic conditions, exhibit a broad band centered around 3240 cm−1 indicative of the presence of OH groups in the polymer. Solid state NMR spectra show that the OH groups are covalently bound to the polymer chain so that the polymer chain has a number of defect and/or cross-linking sites present. The polymer can be doped with iodine into a poorly conducting state. Iodine doping introduces one new vibrational band into the IR spectra at 1490 cm−1, associated with a bipolaronic charge carrier.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 375
Copyright
Copyright © Materials Research Society 1990

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References

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