Characterization of Ozonated C60 and C70 by High Performance Liquid Chromatography and Low- and High-Energy Collision-induced Dissociation Tandem Mass Spectrometry

✍ Scribed by An Van Cleempoel; Renaat Gijbels; Magda Claeys; Hilde Van den Heuvel

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 615 KB
• Volume: 10
• Category: Article
• ISSN: 0951-4198
• DOI: 10.1002/(sici)1097-0231(199610)10:13<1579::aid-rcm666>3.0.co;2-5

✦ Synopsis

The formation of C, and C,o oxides by reaction with ozone has been examined using reversed-phase highperformance liquid chromatography and mass spectrometry including liquid secondary ion mass spectrometry, collision-induced dissociation (CID) and tandem mass spectrometry. Cso and C,,, oxides containing up to four oxygen atoms could be detected and were found to be chemicaIly unstable. The mass spectral results show that low-energy CID of molecular anions of the higher Cso and C, oxides results in the loss of one CO molecule, whereas molecular cations eliminate two molecules of CO. In both ion modes the formation of odd-numbered fullerenes was noticed. In contrast, high-energy CID results in the loss of 0 and 02, followed by sequential C, losses. For some product ions the formation of fullerene-helium adduct ions was observed.

High-performance liquid chromatography

The ozonated C, and C70 samples were analysed on an HPLC system consisting of a Waters 600 MS solvent delivery system (Waters, Milford, MA, USA), a Rheodyne valve with an injection volume of 100 pL (Achrom, Cotati, CA, USA) and a Waters 991 photodiode array detector taking absorption spectra of the fluid emerging from the