title: C60 and C70 fullerene isomers generated in flames. Detection and verification by liquid chromatography/mass spectrometry analyses.
abstract: Fullerenes C60 and C70, generated by combustion, have been shown previously to be produced in controlled laminar flames accompanied by other compounds having fullerene-like characteristics. Analysis of these additional compounds by high-performance liquid chromatography, coupled on-line with mass spectrometry has identified them as isomers of the C60 and C70 fullerenes. The newly observed isomers have characteristic UV spectra and are thermally unstable, undergoing conversion to the more stable fullerenes with a half-life of about 1 h in boiling toluene (111 degrees C). Isomers of C60 and C70 fullerenes previously have been studied theoretically, but not observed experimentally. The flame-generated material also contains C60O and C70O compounds, as well as C76 and higher carbon clusters.
authors.affiliation: Institute for Marine Biosciences, National Research Council, Halifax, Nova Scotia, Canada.
authors.forename: J F
authors.initials: JF
authors.lastname: Anacleto
authors.forename: H
authors.initials: H
authors.lastname: Perreault
authors.forename: R K
authors.initials: RK
authors.lastname: Boyd
authors.forename: S
authors.initials: S
authors.lastname: Pleasance
authors.forename: M A
authors.initials: MA
authors.lastname: Quilliam
authors.forename: P G
authors.initials: PG
authors.lastname: Sim
authors.forename: J B
authors.initials: JB
authors.lastname: Howard
authors.forename: Y
authors.initials: Y
authors.lastname: Makarovsky
authors.forename: A L
authors.initials: AL
authors.lastname: Lafleur
mesh_terms: D002244:Carbon / Q000032:analysis*; D005390:Fires; D037741:Fullerenes; D008401:Gas Chromatography-Mass Spectrometry
chemical_list: D037741:Fullerenes; C069836:fullerene C70; D002244:Carbon; C069837:fullerene C60