Spin Polarization Conservation during Triplet-Triplet Energy Transfer in Fluid Solution As Studied by Time-Resolved ESR Spectroscopy

Kimio Akiyama, Atsuko Kaneko, Shozo Tero-Kubota, Yusaku Ikegami

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Electron spin polarization of pyridinyl radicals generated from the photosensitized dissociation of the dimers was studied. Addition of triplet sensitizer to the dimer solution induced drastic change in the CIDEP spectrum. Examinations of the dependence of spectral change on the T1state energy level and the spin alignment in the T1sublevels of sensitizers lead to the conclusion that energy transfer between the pyridinyl dimer and the sensitizer occurred and that the spin polarization was conserved during the process. From a series of triplet donors, nonphosphorescent T1states of two types of pyridinyl dimers were estimated to be 2.43 eV for the 2, 2'-dimer of 1-methyl-4-tert-butylpyridinyl and 2.65 eV for the 4, 4'-dimer of 1-methylpyridinyl.

本文言語English
ページ(範囲)3297-3301
ページ数5
ジャーナルJournal of the American Chemical Society
112
9
DOI
出版ステータスPublished - 1990 1月
外部発表はい

ASJC Scopus subject areas

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

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