Surface-induced fragmentation of higher fullerenes and endohedral metallofullerenes
نویسندگان
چکیده
We report the first results of surface collisions of pure hollow fullerenes ~C60, C70 and C78! and endohedral metallofullerenes ~Y@C82, Ca@C82 and Ca@C84!, isolated by liquid chromatography, against solid ~silicon and gold! surfaces and self-assembled monolayer ~SAM! films. The experiments have been performed by a reflectron type time-of-flight mass spectrometer modified for measuring surface-induced dissociation ~SID! spectra. No surface-induced fragment is observed for the surface collisions with the solid surfaces and the alkanethiolate SAM film. In contrast, sequential C2-loss fragments have been observed for the surface collisions of hollow fullerenes and Ca@C84 with the fluorinated SAM film. © 1999 American Institute of Physics. @S0021-9606~99!01219-2#
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