Origin of an absorptive electron spin polarization observed in photochemical hydrogen abstraction reaction by benzophenone derivatives. CW and pulsed EPR studies

Kimio Akiyama, Shinji Sekiguchi, Shozo Tero-Kubota

研究成果: Article査読

18 被引用数 (Scopus)

抄録

Continuous wave time-resolved EPR (CW-TREPR) and pulsed Fourier transform EPR (FT-EPR) experiments were carried out to clarify the origin of an unusual electron spin polarization. We analyzed precisely the buildup and decay of the spin-polarized EPR spectra of the transienfradicals generated by laser pulse irradiation of benzophenone derivatives in propan-2-ol. It was found that the reaction of the spin-equilibrated triplet state of benzophenone derivatives was responsible for the net absorptive polarization, because the contribution of absorptive polarization was (4/3)Peq, where Peq is the signal intensity at the Boltzmann population in the Zeeman splitting of a radical. Kinetic parameters were also determined from the dynamics of the spin polarization.

本文言語English
ページ(範囲)180-183
ページ数4
ジャーナルJournal of physical chemistry
100
1
DOI
出版ステータスPublished - 1996 1月 4

ASJC Scopus subject areas

  • 工学(全般)
  • 物理化学および理論化学

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