Chromatographic separations of fullerenes: discovery and characterization of C60 mono-epoxide
1993; Elsevier BV; Volume: 59; Issue: 3 Linguagem: Inglês
10.1016/0379-6779(93)91165-x
ISSN1879-3290
AutoresJohn M. Millar, Kathleen M. Creegan, John L. Robbins, Winston K. Robbins, R. D. Sherwood, P. Tindall, D. M. Cox,
Tópico(s)Graphene research and applications
ResumoAbstract A semi-preparative scale high-pressure liquid chromatographic method for the separation of the fullerene extract components has been developed. During the course of these separations, a new fullerene species was isolated and characterized by mass spectrometry, 13C NMR, and infrared and UV-Vis absorption spectroscopy. Mass spectrometry identifies this component as the mono-oxygen adduct of C60 (C60O) and 13C NMR strongly supports the epoxide structure rather than the isomeric oxido-annulene structure. In addition, the effects of different solvents on the optical absorption spectra of purified C60 and C70 and crystalline properties of C60 fullerite powder are reported.
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