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Evidence for the entrapment of C 60 , C 70 and odd‐numbered high‐mass carbon clusters
Author(s) -
Hopwood F. G.,
Dance I. G.,
Fisher K. J.,
Willett G. D.,
Wilson M. A.,
Pang L. S. K.,
Hanna J. V.
Publication year - 1992
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210271009
Subject(s) - fourier transform ion cyclotron resonance , fullerene , soot , toluene , chemistry , benzene , analytical chemistry (journal) , mass spectrum , pyridine , mass spectrometry , carbon fibers , ion cyclotron resonance , ion , fourier transform infrared spectroscopy , photochemistry , materials science , cyclotron , organic chemistry , chromatography , optics , physics , composite number , composite material , combustion
The carbon are soot from a fullerene generator was exhaustively extracted with toluene, pyridine, toluene then pyridine, benzene and carbon disulphide. Complete extraction of C 60 and C 70 was not fully achieved with any solvent since the residue was shown to contain occluded C 60 and C 70 . Fourier transform infrared, solid‐state nuclear magnetic resonance and threshold laser desorption Fourier transform ion cyclotron resonance mass spectrometric experiments were used to show the presence of C 60 and C 70 in the exhaustively extracted residues. Low‐power laser irradiation also indicated the presence of higher fullerenes in the extracted are soot. Laser ablation of the extracted arc soot gave FT ion cyclotron resonance mass spectra which showed regions with odd‐numbered carbon clusters. It is suggested that the smaller fullerenes and possibly the odd‐numbered clusters may be trapped in hyperfullerenes such as the ‘Russian egg’ or in ‘buckytubes’.