Spin dynamics and zero-field splitting constants of the triplet exciplex generated by photoinduced electron transfer reaction between erythrosin B and duroquinone

Takashi Tachikawa, Yasuhiro Kobori, Kimio Akiyama, Akio Katsuki, Ulrich E. Steiner, Shozo Tero-Kubota

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The spin dynamics of the duroquinone anion radical generated by photoinduced electron transfer reactions from triplet erythrosin B to duroquinone has been studied by using transient absorption and pulsed FT-EPR spectroscopy. Triplet exciplex formation as the reaction intermediate is verified by the observation of spin-orbit coupling induced electron spin polarization. The kinetic parameters for exciplex formation and the intrinsic enhancement factors of electron spin polarization are determined in various alcoholic solvents. The zero-field splitting constants of the triplet exciplex are determined by the analysis of the solvent viscosity dependence of the enhancement factors of the electron spin polarization.

Original languageEnglish
Pages (from-to)13-21
Number of pages9
JournalChemical Physics Letters
Volume360
Issue number1-2
DOIs
Publication statusPublished - 2002 Jul 3

ASJC Scopus subject areas

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

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