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Dr. Hidefumi Hiura, Dr. Thomas W. Ebbesen and Dr. Katsumi Tanigaki Opening and purification of carbon nanotubes in high yields Advanced Materials 7

Version of Record online: 15 SEP 2004 | DOI: 10.1002/adma.19950070304

Gram-quantities of pure carbon nanotubes (see Figure) can be produced using a new method reported here. The nanotubes, which can be thought of as cylindrical graphitic microcrystals, are opened and purified by treating them with a mixtue of sulfuric acid and potassium permanganate. The opening of the nanotubes on a large scale is also of interest in terms of filling the tubes with interesting guest molecules.

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