Method for selectively separating semiconductive carbon...

Details Method for selectively separating semiconductive carbon... Method for selectively separating semiconductive carbon...

2005-05-11

2009-02-10

Langel, Wayne (Department: 1793)

Nanotechnology

Manufacture, treatment, or detection of nanostructure

For carbon nanotubes or fullerenes

C423S461000

Reexamination Certificate

active

07488876

ABSTRACT:
Semiconducting type carbon nanotubes are efficiently separated from a mixture of semiconducting and metallic carbon nanotubes in a simple manner, by way of treating the carbon nanotube mixture with an organic solution containing nitronium ions, filtering the resulting mixture to recover remaining solids, and heat-treating the solids.

REFERENCES:
An et al., “A Diameter-Selective Attack of Metallic Carbon Nanotubes by Nitronium Ions” 2005, J. Am. Chem. Soc., 127, pp. 5196-5203.
An et al., “A Diameter-Selective Chiral Separation of Single-Wall Carbon Nanotubes Using Nitronium Ions” 2006, Journal of Electronic Materials, vol. 35, No. 2, pp. 235-242.
Forsman et al., “Intercalation of Graphite by Nitronium Ion Attack,” 1980, Synthetic Metals, 2, pp. 171-176.
Chattopadhyay et al., “A Route for Bulk Separation of Semiconducting from Metallic Single-Wall Carbon Nanotubes” 2003, J. Am. Chem. Soc., 125, pp. 3370-3375.
Georgakilas et al., “Purification of HiPCO Carbon Nanotubes via Organic Functionalization” 2002, J. Am. Chem. Soc., 124, pp. 14318-14319.

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