Aqueous Dispersion of Single-Walled Carbon Nanotubes by using Self-doped Polyaniline as Dispersant

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In this research, a water-soluble self-doped polyaniline, poly(aniline N-butylsulfonate) (PAnBuS), was introduced to disperse SWNTs. Dispersion of SWNTs functionalized with PAnBuS was achieved ex-situ by simply mixing both components using ultrasonic treatment. The PAnBuS-functionalized SWNTs are highly dispersible in water, and form a stable homogeneous dispersion. The stability of aqueous SWNT dispersion was examined by UV-vis spectroscopy and scanning electron microscopy (SEM). The interaction between self-doped polyaniline and SWNTs was investigated by X-ray photoelectron spectroscopy (XPS). Also, the preparation of transparent conductive films (TCFs) by spray-coating of the aqueous SWNT dispersion was attempted, and the results were compared with those of TCFs obtained from aqueous SWNT dispersion by sodium dodecylsulfate (SDS).

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Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2008: Materials, Fabrication, Particles, and Characterization – Technical Proceedings of the 2008 NSTI Nanotechnology Conference and Trade Show, Volume 1
Published: June 1, 2008
Pages: 86 - 89
Industry sector: Advanced Materials & Manufacturing
Topic: Carbon Nano Structures & Devices
ISBN: 978-1-4200-8503-7