Magnetic field effects on the decay rates of triplet biradical photogenerated from intramolecular electron-transfer in a zinc- tetraphenylporphyrin-fullerene linked compound

Hiroaki Yonemura, Hideki Nobukuni, Shinya Moribe, Sunao Yamada, Yoshihisa Fujiwara, Yoshifumi Tanimoto

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Transient absorption spectra of a zinc-tetraphenylporphyrin(ZnP)- fullerene(C60) linked compound with flexible eight methylene groups indicated that intramolecular electron-transfer occurred in benzonitrile, while not in toluene. In benzonitrile, the decay rate constant of biradical decreases quickly in lower magnetic fields (<0.1 T), and then increases gradually and finally become almost constant in higher magnetic fields (0.1≤H≤1.2 T). The magnetic field effects (MFEs) verified that the triplet biradical was generated from the intramolecular electron-transfer of the triplet-excited states of ZnP and C60. The reverse phenomenon of the MFEs around 0.1 T is most likely ascribed to the properties of C60 moiety.

Original languageEnglish
Pages (from-to)417-422
Number of pages6
JournalChemical Physics Letters
Volume385
Issue number5-6
DOIs
Publication statusPublished - Feb 16 2004

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Fullerenes
Magnetic field effects
decay rates
fullerenes
electron transfer
zinc
Magnetic fields
Electrons
Toluene
Excited states
magnetic fields
Absorption spectra
Rate constants
methylene
toluene
absorption spectra
benzonitrile
zinc tetraphenylporphyrin
excitation
fullerene C60

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Magnetic field effects on the decay rates of triplet biradical photogenerated from intramolecular electron-transfer in a zinc- tetraphenylporphyrin-fullerene linked compound. / Yonemura, Hiroaki; Nobukuni, Hideki; Moribe, Shinya; Yamada, Sunao; Fujiwara, Yoshihisa; Tanimoto, Yoshifumi.

In: Chemical Physics Letters, Vol. 385, No. 5-6, 16.02.2004, p. 417-422.

Research output: Contribution to journalArticle

Yonemura, Hiroaki ; Nobukuni, Hideki ; Moribe, Shinya ; Yamada, Sunao ; Fujiwara, Yoshihisa ; Tanimoto, Yoshifumi. / Magnetic field effects on the decay rates of triplet biradical photogenerated from intramolecular electron-transfer in a zinc- tetraphenylporphyrin-fullerene linked compound. In: Chemical Physics Letters. 2004 ; Vol. 385, No. 5-6. pp. 417-422.
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AU - Yamada, Sunao

AU - Fujiwara, Yoshihisa

AU - Tanimoto, Yoshifumi

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