Electronic Structure of Encapsulated Fullerenes

Authored by: Shojun Hino

2 Handbook of Nanophysics

Print publication date:  September  2010
Online publication date:  September  2010

Print ISBN: 9781420075540
eBook ISBN: 9781420075557
Adobe ISBN:


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Before the discovery of C60 (Kroto et al. 1985), the existence of truncated icosahedron composed of carbon and hydrogen atoms C60H60 was pointed out (Yoshida and Osawa 1971). Yoshida and Osawa proposed that this molecule might exist if all carbon atoms in C60H60 have sp2 hybridized orbitals. They also pointed out that the molecule might have aromaticity (super-aromaticity). Actually, the discovered truncated icosahedron was not C60H60 but C60; however, what is noteworthy is that fullerene structure had been proposed more than 15 years before its actual discovery. Although the existence of a curious-shaped molecule had been revealed, the investigation of C60 did not gain momentum until 1990 when Krätschmer and his coworkers invented a C60 mass production method (Krätschmer et al. 1990). Before the advent of the mass production method, the quantity of fullerenes (C60 or C70) was so microscopic that investigation on the solid state nature of fullerenes was virtually impossible.

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