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Science 26 October 2001:
Vol. 294. no. 5543, p. 741
DOI: 10.1126/science.294.5543.741f
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Although the vaporization of graphite to form C60 and C70 produces these compounds in quantity, it has been difficult to produce higher fullerenes by this route. An initial step toward the rational synthesis of higher fullerenes would be to accomplish this goal with C60 itself. Boorum et al. (p. 828) report the synthesis in nine steps of polycyclic aromatic hydrocarbon (PAH) precursor, C60H30, that loses hydrogen under laser irradiation to form C60. Control experiments with labeled compounds and larger and smaller PAHs confirm that the remaining bonds form directly during dehydrogenation and that the parent PAH does not merely fragment and recombine.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)