Abstract
The intercalation of O2 in C60 and C70 solids have been studied. In both gas effusion spectra of C60 and C70 powder exposed to O2 at room temperature, two evolution peaks of O2 are found near 80 and 150°C. In both C60 and C70 powder, the peak near 80°C does not depend on a heating ratio and the peak near 150°C shifts to higher temperature with the heating ratio. The activation energy on diffusion of O2 in C60 and C70 solids are ∼0.27eV and ∼0.46eV, respectively. The number of O2 intercalated in C70 powder is larger than that in C60 powder. Electron spin density of 02-intercalated C60 film is larger than that of C70 film. The effect on the properties of C60 and C70 solids by the intercalation of O2 are discussed.
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