Photoinduced electron-transfer and magnetic-field effects on the decay rates of photogenerated biradicals in a phenothiazine-C60 linked compound with six methylene groups: Temperature dependence

Shinya Moribe, Hiroaki Yonemura, Sunao Yamada

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Abstract

Photoinduced electron-transfer reactions and magnetic-field effects (MFEs) on the decay of photogenerated biradical in a phenothiazine-C60 linked compound with six methylene groups were examined in benzonitrile at various temperatures (283-343 K). The decay rate constants of the biradicals were dramatically decreased in the lower magnetic fields (0-0.2 T) and increased in the higher magnetic fields (0.2-1.0 T). These reverse phenomena in the MFEs were more clearly observed with the increase of temperature and are explained by the contribution of spin-lattice relaxation mechanism due to anisotropic Zeeman interaction. The temperature dependence on the MFEs supports the above mechanism.

Original languageEnglish
Pages (from-to)247-253
Number of pages7
JournalComptes Rendus Chimie
Volume9
Issue number2
DOIs
Publication statusPublished - Feb 1 2006

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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