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Unique Roles of DNA Wrapped SWNTs: In-situ Fabrication of Self-Doped Polyaniline Nanocomposites

Y.F. Ma, S.R. Ali and H.X. He
Rutgers University, US

Keywords:
carbon nanotubes, DNA, Polyaniline, self-doped, composite

Abstract:
Inspired by the remarkable electrical conductivity, the superior mechanical properties of carbon nanotubes(CNTs), and the rich optical, electrical and electrochemical properties of conducting polymers, nanocomposites of conducting polymers and CNTs have been pursued with a hope to synergistically combine their individual components. For the first time, we used single stranded DNA wrapped single walled carbon nanotubes (ss-DNA/SWNTs) to in-situ fabricate nanocomposites of self-doped polyaniline(poly(aniline boronic acid) in this work))/SWNTs both electrochemically and chemically. Due to their unique surface and electronic properties, the ss-DNA/SWNTs performed multiple roles in the greatly improved performance of the self-doped polyaniline both during and after the polymerization, which makes this work unique compared to the previously reported conducting polymer/carbon nanotube composites.

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