Spin-trapped hydroxyl free radicals studied at low field by Field-Cycled Dynamic Nuclear Polarization

David J. Lurie*, I. Nicholson, J. S. McLay, J. R. Mallard

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The technique of Field-Cycled Dynamic Nuclear Polarization (FC-DNP) involves the EPR irradiation of a free radical solution and the subsequent observation of the NMR signal, the experiment being carried out at a range of magnetic field strengths in order to measure the free radical’s EPR spectrum. In this work FC-DNP has been used to study the EPR spectrum of DMPO spin-trapped hydroxyl free radicals at magnetic field strengths between 0.5 mT and 13.0 mT (5–130 Gauss). The low-field EPR spectrum contains six separate EPR lines, in contrast to the well-known X-band spectrum where only four are seen. Knowledge of the spin-adduct’s EPR spectrum will be of use to workers involved in low-field EPR, especially those conducting biological or in-vivo spin-trapping experiments.

Original languageEnglish
Pages (from-to)917-925
Number of pages9
JournalApplied Magnetic Resonance
Volume3
Issue number5
DOIs
Publication statusPublished - 1 Jan 1992

Fingerprint Dive into the research topics of 'Spin-trapped hydroxyl free radicals studied at low field by Field-Cycled Dynamic Nuclear Polarization'. Together they form a unique fingerprint.

Cite this