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Novel Template Guided Synthesis of Poly Aniline

Published online by Cambridge University Press:  25 February 2011

Jia-Ming Liu
Affiliation:
Industrial Technology Research Institute, Materials Research Laboratories, Chutung, Hsinchu 31015, Taiwan, R.O.C.
Linfeng Sun
Affiliation:
University of Rhode Island, Dept. of Chemistry, Kingston, RI 02881, USA
Jyun-Hwei Hwang
Affiliation:
University of Rhode Island, Dept. of Chemistry, Kingston, RI 02881, USA
Sze Cheng Yang
Affiliation:
University of Rhode Island, Dept. of Chemistry, Kingston, RI 02881, USA
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Extract

In acidic medium, polyaniline has positive charges on its molecular backbone. These charges come from either protonation at the nitrogen atom sites or polarons in its β-electronic system [1]. Although polyaniline, due to its positive charges, is a polycation, yet its physical properties are quite different from the classical polyelectrolytes. For example, the polycation vinylbenzyltrimethylammonium chloride is soluble in water but polyaniline molecules (and other conducting polymers too) tends to aggregate into intractable solid. Conducting polymers aggregate into intractable solid because of their stiff molecular backbone and the strong short range attractive forces between βclouds of adjacent polyaniline chains. The insolubility of polyaniline poses problem for solution processing of polymers. There have been a heavy effort towards the resolution of this problem [2].

Type
Research Article
Copyright
Copyright © Materials Research Society 1992

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References

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