Observation of two-spin controlling of a radical pair by pulsed irradiation of microwave monitored by absorption detected magnetic resonance

Yasuyuki Araki, Kiminori Maeda, Hisao Murai

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

A transient absorption detected magnetic resonance technique is used to explore the electron spin nutation in a polymethylene-linked biradical system under a strong electromagnetic field (B1). The application of pulsed microwave with the duration successively incremented to the EPR spectral center shows a double frequency oscillation of the absorbance signal along with the principal single one due to one electron spin nutation (ω1 = gμBB1/ℏ). The former signal is explained by simultaneous strong microwave irradiation to two spins in the biradical. This is the first observation of a 2ω1 spin-nutation signal by monitoring the chemical reaction change of a transient biradical.

Original languageEnglish
Pages (from-to)515-520
Number of pages6
JournalChemical Physics Letters
Volume332
Issue number5-6
DOIs
Publication statusPublished - 2000 Dec 29

ASJC Scopus subject areas

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

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