[60]Fullerene-perchlorotriphenylmethide anion triads. Synthesis and study of photoinduced intramolecular electron-transfer processes

Stéphanie Chopin, Jack Cousseau, Eric Levillain, Concepció Rovira, Jaume Veciana, Atula S.D. Sandanayaka, Yasuyuki Araki, Osamu Ito

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8 Citations (Scopus)


For the first time an anionic donor, the perchlorotriphenylmethide anion (PTM-), has been covalently bonded to C60, generating the C60-(PTM-)2 triad that is reversibly oxidized to the corresponding C60-perchlorotriphenylmethyl radical triad C60-(PTM)2. For the triad C60-(PTM -)2, photoinduced charge-separation can be confirmed to occur via the excited singlet states of the C60 moiety and the PTM anion in polar and nonpolar solvents from quenching of their fluorescence intensities in the region of 700-750 nm and 560-630 nm, respectively. The charge-separation state was confirmed by the nanosecond transient absorption spectra in the visible and near-IR spectral regions. After charge-separation, back electron transfer takes place with a lifetime of about 80 ns. Steady-state concentration of the highly persistent PTM radical was observed after repeated laser light irradiation.

Original languageEnglish
Pages (from-to)112-121
Number of pages10
JournalJournal of Materials Chemistry
Issue number1
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry


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