Authors: K. Miyazawa, C. Ringor, K. Nakamura, M. Tachibana, T. Mashino and S. Nakamura
Affilation: National Institute for Materials Science, Japan
Pages: 124 - 127
Keywords: fullerene, nanowhisker, nanotube, Raman, TEM
Structure of the nanowhiskers and nanotubes composed of C60 molecules and C60 derivative molecules are examined by use of Raman spectroscopy and transmission electron microscopy (TEM). The C60 nanotubes (C60NTs) dried in air exhibited a Raman spectrum similar to that of pristine C60, indicating that the C60 molecules in the C60NTs are bonded via weak van der Waals bonding forces. The C60 nanowhiskers prepared by use of quinoline and isopropyl alcohol showed a Raman spectrum similar to that of one-dimensionally polymerized C60 and C60 dimers. The nanowhiskers prepared by use of C60(6,7-dimethoxytetralin) showed an Ag(2) peak at 1460 cm-1, which is very close to the corresponding Raman peak of photopolymerized C60. Further, the C60(6,7-dimethoxytetralin) nanowhisker showed a Raman spectrum with clearly split and sharp peaks in the range of 200-800 cm-1, indicating a good crystallinity. This result coincides with the previous observation that the crystallinity of C60 nanowhiskers can be increased by an addition of suitable C60 derivative molecules.