J. Phys. IV France 7 (1997) C2-525-C2-526
NEXAFS Studies of Higher Fullerenes up to C96LMitsumoto1, H. Oji1, I. Mori1, Y. Yamamoto1, K. Asato1, Y. Ouchi1, H. Shinohara1, K. Seki1, K. Umishita2, S. Hino2, S. Nagase3, K. Kikuchi3 and Y. Achiba3
1 Department of Chemistry, Nagoya University, Chikusa-ku, Nagoya 464-01, Japan
2 Department of Image Science, Chiba University, Chiba 260, Japan
3 Department of Chemistry, Tokyo Metropolitan University, Hachioji, Tokyo 192-03, Japan
NEXAFS spectra of higher fullerenes C78, Cs4, C86, Css, C90, C92, CM and C96 were measured for the first time. We examine these spectra in terms of the dependence of their densities of unoccupied states on the carbon number comparing with those of C60, Cm and C7«. We also measured isomer-separated fullerenes which included carefully separated fractions of (i) mixture of C84 with D2 and D2d symmetries, Qi) CM with C2 symmetry, and (iii) C90 with C2 symmetry. We also compared the observed spectra with the densities of unoccupied states by ab initio calculations for C76 and C84.
© EDP Sciences 1997