Highly Exfoliated Water-Soluble Single-Walled Carbon Nanotubes
Feng LiangJonathan M. BeachK. PradeepWenhua GuoRobert H. HaugeMatteo PasqualiR. E. SmalleyW. E. Billups
Abstract
Single-walled carbon nanotubes functionalized by phenyl groups can be sulfonated in oleum (H2SO4, 20% free SO3) to give materials that exhibit high solubility in water as determined by centrifugation in conjunction with UV−vis−near-infrared measurements. Cryo-transmission electron microscopy images show that extensive debundling occurs during the sulfonation step.
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