Observation of spin-correlated radical pairs via two-dimensional electron paramagnetic resonance nutation spectroscopy

Ryuji Hanaishi, Yasunori Oba, Kimio Akiyama, Seigo Yamauchi, Masamoto Iwaizumi

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Two-dimensional (2D) Fourier-transform (FT) electron paramagnetic resonance (EPR) nutation experiments were done in order to verify anomalous flip-angle dependence of a FT-EPR spectrum of a photochemically generated spin-correlated radical pair (SCRP). It was demonstrated by both the experiment and theory that the signals of SCRP have additionally higher and lower nutation frequencies than that of a free radical. This spectroscopy provides a direct spectroscopic evidence of spin-correlation within SCRP, and enables one to partially separate SCRP signals from free radical signals in the 2D EPR spectrum.

Original languageEnglish
Pages (from-to)4819-4822
Number of pages4
JournalThe Journal of Chemical Physics
Volume103
Issue number11
DOIs
Publication statusPublished - 1995 Jan 1

ASJC Scopus subject areas

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

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