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Controlling the pKa for Protonic Doping of Polyaniline by Non-covalent Complexation

Published online by Cambridge University Press:  26 February 2011

Hui Wan  and
Sze C Yang
Hui Wan
Affiliation:
flyinghui@hotmail.com, University of Rhode Island, Department of Chemistry, Kingston RI 02881, United States
Sze C Yang
Affiliation:
syang@chm.uri.edu, University of Rhode Island, Department of Chemistry, Kingston, RI, 02881, United States
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Abstract

We report a synthetic method for shifting the pKa for the deprotonaton of polyaniline by the formation of non-covalent complexes between polyaniline and a polyanion. Depending on the choice of the polyanion and the condition of the synthesis, we can control the pKa value for the dedoping reaction to spread the pH range from 5.5 to 9.0. From a systematic study of the structural influence on the pKa values, we have verified that the electrostatic stabilization of the polaron is the origin for this unusually large pKa shift.

Keywords

polymercompositedopant
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 965: Symposium S – Organic Electronics – Materials, Devices and Applications , 2006 , 0965-S12-23
Copyright
Copyright © Materials Research Society 2007

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References

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