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

C. Yoshioka, Y. Kotake, Yoshimi 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

Fingerprint

Hydroxyl Radical
Paramagnetic resonance
electron paramagnetic resonance
trapping
hydroxyl radicals
Pressure effects
pressure effects
static pressure
reactivity
traps
products

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

External pressure modulates spin-trapping rates in solution as studied with electron spin resonance. / Yoshioka, C.; Kotake, Y.; Sueishi, Yoshimi.

In: Chemical Physics Letters, Vol. 385, No. 3-4, 09.02.2004, p. 189-192.

Research output: Contribution to journalArticle

@article{085d1ed9cd2643a784e4ded689a9f4b5,
title = "External pressure modulates spin-trapping rates in solution as studied with electron spin resonance",
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.",
author = "C. Yoshioka and Y. Kotake and Yoshimi Sueishi",
year = "2004",
month = "2",
day = "9",
doi = "10.1016/j.cplett.2003.12.091",
language = "English",
volume = "385",
pages = "189--192",
journal = "Chemical Physics Letters",
issn = "0009-2614",
publisher = "Elsevier",
number = "3-4",

}

TY - JOUR

T1 - External pressure modulates spin-trapping rates in solution as studied with electron spin resonance

AU - Yoshioka, C.

AU - Kotake, Y.

AU - Sueishi, Yoshimi

PY - 2004/2/9

Y1 - 2004/2/9

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0842277661&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0842277661&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2003.12.091

DO - 10.1016/j.cplett.2003.12.091

M3 - Article

AN - SCOPUS:0842277661

VL - 385

SP - 189

EP - 192

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 3-4

ER -