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Charge‐transfer ionspray liquid chromatography/mass spectrometry analyses of fullerenes and related compounds from flame‐generated materials
Author(s) -
Anacleto J. F.,
Quilliam M. A.,
Boyd R. K.,
Howard J. B.,
Lafleur A. L.,
Yadav T.
Publication year - 1993
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290070313
Subject(s) - chemistry , mass spectrometry , fullerene , chromatography , analytical chemistry (journal) , charge (physics) , organic chemistry , physics , quantum mechanics
Abstract A flame‐generated, fullerene‐rich material (J. B. Howard et al. , Nature 352, 139 (1991)) has been characterized by liquid chromatography coupled on‐line to ionspray mass spectrometry. Charge‐transfer complexation, using a post‐column addition of either an electron donor or acceptor, was utilized as a pre‐ionization technique. Analyses in the positive‐ion mode showed that the thermally metastable constituents of the flame‐generated material, tentatively identified previously (J. F. Anacleto et al. , Rapid Commun. Mass Spectrom. 6, 214 (1992)) as fullerene isomers on the basis of atmospheric pressure chemical ionization muss spectrometry, yielded mass spectra consistent with their identification as fullerene adducts with highly uiuaturated moieties C n H 2 n −4 with n = 5, 6, and 7. The molecular radical cations of these adduct species were susceptible to facile fragmentation yielding the molecular ions of the corresponding fullerenes. The negative‐ion mode experiments failed to provide any information regarding the identity of these metastable constituents.