Electrospray and laser desorption ionization studies of C60O and isomers of C60O2

Jin Pei Deng, Chung Yuan Mou, Chau Chung Han

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74 Citations (Scopus)


The reaction of C60 with ozone in toluene results in the formation of C60 oxides. C60O and two isomers of C60O2 were isolated; they both have the 423 nm absorption peak characteristic of an epoxide structure between adjacent 6,6-rings in C60. Intact molecular ions are generated by electrospray ionization (ESI) without fragmentation. The enhanced ESI sensitivity of the higher oxides reflects the increase in electron affinity upon oxidation. In contrast to ESI, odd-numbered fragments are observed in laser desorption ionization (LDI) of C60O. The two isomers of C60O2 show different intensity distributions of the same fragment ions in LDI, suggesting different distances between the two oxygen atoms in them. Mechanisms are proposed for the formation of the two isomeric forms of C60O2 and for mass spectrometric fragmentation processes.

Original languageEnglish
Pages (from-to)14907-14910
Number of pages4
JournalJournal of Physical Chemistry
Issue number41
Publication statusPublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry


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