Temperature dependence of relaxation time of a stable radical pair in SyPixD investigated by pulsed EPR

Toru Kondo, Shinji Masuda, Kazuhiko Tsutsui, Hiroyuki Mino

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The temperature dependence of the spin-lattice relaxation of the radical pair of flavin and tyrosine in SyPixD was investigated by pulsed electron paramagnetic resonance (EPR) spectroscopy. Biphasic recovery with a fast component of the spin-lattice relaxation time, denoted as T1 fast, and slow component of spin-lattice relaxation time, denoted as T1slow, was detected in the range of 4-80 K. Based on the temperature dependence of T1fast and T1 slow below 16 K, the exchange coupling of the radical pair was estimated as 2J = 6-8 cm-1, defined as H=-2JS1S2.

Original languageEnglish
Pages (from-to)528-533
Number of pages6
JournalChemical Physics Letters
Volume501
Issue number4-6
DOIs
Publication statusPublished - 2011 Jan 7
Externally publishedYes

ASJC Scopus subject areas

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

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