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

doi:10.1246/bcsj.78.1500

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

Division of Organic- and Biomaterials Research

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	1500-1507
Number of pages	8
Journal	Bulletin of the Chemical Society of Japan
Volume	78
Issue number	8
DOIs	https://doi.org/10.1246/bcsj.78.1500
Publication status	Published - 2005 Aug 15

ASJC Scopus subject areas

Chemistry(all)

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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.",

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T1 - Synthesis and photoinduced intermolecular electronic acceptor ability of pyrazolo[60]fullerenes vs tetrathiafulvalene

AU - Delgado, Juan Luis

AU - De La Cruz, Pilar

AU - López-Arza, Vicente

AU - Langa, Fernando

AU - Gan, Zhenhai

AU - Araki, Yasuyuki

AU - Ito, Osamu

PY - 2005/8/15

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N2 - 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.

AB - 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.

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

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