High Pressure Electron Spin Resonance of Radicals in Solution

Yoshimi Sueishi, Norio Nishimura

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


The history of high-pressure ESR techniques applied to solution chemistry has been surveyed briefly, and our recent investigations have been reviewed. The results are summarized as follows: (1) The rate of spin exchange reactions of nitroxides is diffusion-controlled, and the acti-vation volume is closely related to that for diffusive processes. (2) The rates of spin-lattice re-laxation for the photo-reduced products of 2,5-di-tert-butyl-1,4-benzoquinone(2,5-DBQ) were estimated at various pressures. (3) From the pressure effects on the ESR signal, aspects of di-tert-butyl nitroxide(DTBN) included in cyclodextrins were inferred. (4) The information on the rotational motion of spin-labeled long-chain molecules in solutions was obtained from the anisotropic ESR signals.

Original languageEnglish
Pages (from-to)139-145
Number of pages7
JournalThe Review of High Pressure Science and Technology
Issue number2
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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