Functionalization of carbon nanotubes via nitrogen glow discharge. 2005

Bishun Khare, and Patrick Wilhite, and Benjamin Tran, and Elico Teixeira, and Kenneth Fresquez, and Delphine Nna Mvondo, and Charles Bauschlicher, and M Meyyappan
Center for Nanotechnology, NASA Ames Research Center, Moffett Field, California 94035, USA. bkhare@mail.arc.nasa.gov

We have exposed single-wall carbon nanotubes (SWCNTs) to microwave-generated N2 plasma with the aim to functionalize the nanotubes. The results strongly depend on the distance between the discharge source and the sample, since nitrogen atoms generated can be lost due to recombination. No functionalization was observed when this distance was 7.0 cm. At intermediate distances (2.5 cm), the incorporation of nitrogen and oxygen onto the SWCNT was observed, while, at short distances (1 cm), products containing CN were also observed.

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