An in situ electrochemical cell for Q- and W-band EPR spectroscopy

Paul R. Murray, David Collison, Simon Daff, Nicola Austin, Ruth Edge, Brian W. Flynn, Lorna Jack, Fanny Leroux, Eric J. L. McInnes, Alan Murray, Daniel Sells, Tom Stevenson, Joanna Wolowska, Lesley J. Yellowlees

Research output: Contribution to journalArticlepeer-review

Abstract

A simple design for an in situ, three-electrode spectroelectrochemical cell is reported that can be used in commercial Q- and W-band (ca. 34 and 94 GHz, respectively) electron paramagnetic resonance (EPR) spectrometers, using standard sample tubing (1.0 and 0.5 mm inner diameter, respectively) and within variable temperature cryostat systems. The use of the cell is demonstrated by the in situ generation of organic free radicals (quinones and diimines) in fluid and frozen media, transition metal ion radical anions, and on the enzyme nitric oxide synthase reductase domain (NOSrd), in which a pair of flavin radicals are generated.
Original languageEnglish
Pages (from-to)206-209
Number of pages4
JournalJournal of Magnetic Resonance
Volume213
Issue number1
DOIs
Publication statusPublished - Dec 2011

Keywords

  • Spectroelectrochemistry
  • EPR
  • ESR
  • High frequency EPR
  • Bipyridines
  • Flavins

Cite this