External pressure modulates spin-trapping rates in solution as studied with electron spin resonance

C. Yoshioka, Y. Kotake, Y. Sueishi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Using a competitive spin-trapping method, we determined the effect of high static pressure on the trapping rate of hydroxyl and phenyl radical in solution. Under various pressures, hydroxyl or phenyl radicals were produced in solution in the presence of two different spin-trapping compounds, and the yield of trapped products was used to calculate relative trapping rates. We found that external pressure increases the phenyl-radical trapping rates by approximately 40% at the pressure of 490 bar, while there was no pressure effect in hydroxyl-radical trapping rates. We interpreted the pressure effect based on the reactivity difference of phenyl and hydroxyl radicals to the spin trap which is mainly caused by the variation in the volume of the group.

Original languageEnglish
Pages (from-to)189-192
Number of pages4
JournalChemical Physics Letters
Volume385
Issue number3-4
DOIs
Publication statusPublished - Feb 9 2004

ASJC Scopus subject areas

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

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