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Russian Chemical Bulletin

, Volume 56, Issue 2, pp 211–219 | Cite as

Generation of fullerenyl radicals and chemiluminescence in the (C60—R3Al)—O2 system

  • R. G. Bulgakov
  • Yu. G. Ponomareva
  • Z. S. Muslimov
  • F. G. Valyamova
  • R. A. Sadykov
  • R. F. Tuktarov
Article

Abstract

Fullerenyl radicals (FR) RC60 · and chemiluminescence (CL) are generated in the presence of O2 in C60—R3Al (R = Et, Bui) solutions in toluene (T = 298 K). The FR are formed due to the addition of the R· radical, which is an intermediate of R3Al autooxidation, to C60. Mass spectroscopy and HPLC were used to identify EtnC60Hm (n, m = 1–6), EtpC60 (p = 2–6), and dimer EtC60C60Et as stable products of FR transformations. As found by ESR, the EtC60 · radical (g = 2.0037) is also generated by photolysis of solutions obtained after interaction in the (C60— R3Al)—O2 system. In the presence of dioxygen, the FR is not oxidized but yields complexes with O2, which appear as broadening of the ESR signals. Chemiluminescence arising in the (C60—R3Al)—O2 system is much brighter (I max = 1.86·108 photon s−1 mL−1) than the known background CL (I max = 6.0·106 photon s−1 mL−1) for the autooxidation of R3Al and is localized in a longer-wavelength spectral region (λmax = 617 and 664 nm). This CL is generated as a result of energy transfer from the primary emitter 3CH3CHO* to the products of FR transformation: RnC60Hm, RpC60, and EtC60C60Et.

Key words

fullerene C60 alkylaluminums fullerenyl radicals fullerene ethylhydrides C60 dimer chemiluminescence 

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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • R. G. Bulgakov
    • 1
  • Yu. G. Ponomareva
    • 1
  • Z. S. Muslimov
    • 1
  • F. G. Valyamova
    • 1
  • R. A. Sadykov
    • 1
  • R. F. Tuktarov
    • 2
  1. 1.Institute of Petrochemistry and CatalysisRussian Academy of SciencesUfaRussian Federation
  2. 2.Institute of Physics of Molecules and CrystalsUfa Research Center of the Russian Academy of SciencesUfaRussian Federation

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