Journal of Chemical Physics, Vol.110, No.19, 9681-9687, 1999
Surface-induced fragmentation of higher fullerenes and endohedral metallofullerenes
We report the first results of surface collisions of pure hollow fullerenes (C-60, C-70 and C-78) and endohedral metallofullerenes (Y@C-82, Ca@C-82 and Ca@C-84), 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 C-2-loss fragments have been observed for the surface collisions of hollow fullerenes and Ca@C-84 with the fluorinated SAM film.