Synthesis and photoinduced intermolecular electronic acceptor ability of pyrazolo[60]fullerenes vs tetrathiafulvalene

Juan Luis Delgado, Pilar De La Cruz, Vicente López-Arza, Fernando Langa, Zhenhai Gan, Yasuyuki Araki, Osamu Ito

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15 Citations (Scopus)

Abstract

The synthesis of three novel pyrazolo[60]fullerene derivatives containing electron-withdrawing substituents has been described. High solubility in ordinary organic solvents was proved. Their electrochemical properties of pyrazolo-[60]fullerenes showed better electron affinity than pristine C 60 in the ground state. The nanosecond transient absorption spectra showed clear evidence for photoinduced electron transfer from TTF to the excited triplet state of the pyrazolo-[60]fullerenes, in which stronger electron-withdrawing substituents accelerate the rates of the photoinduced electron-transfer, indicating a high electron-acceptor ability of the excited triplet state of pyrazolo[60]fullerenes.

Original languageEnglish
Pages (from-to)1500-1507
Number of pages8
JournalBulletin of the Chemical Society of Japan
Volume78
Issue number8
DOIs
Publication statusPublished - 2005 Aug 15

ASJC Scopus subject areas

  • Chemistry(all)

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