High-yield fullerene encapsulation in single-wall carbon nanotubes

Kataura, H.; Maniwa, Y.; Kodama, T.; Kikuchi, K.; Hirahara, K.; Suenaga, K.; Iijima, S.; Suzuki, S.; Achiba, Y.; Krätschmer, W.

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High-yield fullerene encapsulation in single-wall carbon nanotubes

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Krätschmer, W.
Wolfgang Krätschmer - Carbon Molecules and Fullerenes, Research Groups, MPI for Nuclear Physics, Max Planck Society;

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Citation

Kataura, H., Maniwa, Y., Kodama, T., Kikuchi, K., Hirahara, K., Suenaga, K., et al. (2001). High-yield fullerene encapsulation in single-wall carbon nanotubes. Synthetic Metals, 121(1-3), 1195-1196. Retrieved from www.elsevier.com/locate/synmet.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-858B-F

Abstract

We have successfully synthesized single-wall carbon nanotubes encapsulating specified fullerenes (peapods) in high yield using a sublimation method. Side and section images by HRTEM indicate that almost all nanotubes are filled with high-density fullerene chains. We measured Raman spectra to estimate macroscopic yield. The observed Raman intensity of C₇₀ molecules in the C₇₀-peapods is 1/10 of that in C₇₀ film, which indicates a filling rate of C₇₀ to be higher than 26 %. In the case of C₆₀-peapods, Raman spectrum has changed rapidly by laser irradiation. Since the final spectrum at room temperature is similar to that of the orthorhombic polymer phase, a formation of one-dimensional photopolymers inside SWNTs is suggested.