Thread: Anin situelectrochemical cell for Q- and W-band EPR spectroscopy
View Single Post
  #1  
Unread 09-24-2011, 06:04 AM
nmrlearner's Avatar
nmrlearner nmrlearner is offline
Senior Member
  
Join Date: Jan 2005
Posts: 23,209
Points: 193,617, Level: 100
Points: 193,617, Level: 100 Points: 193,617, Level: 100 Points: 193,617, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 50.7%
Activity: 50.7% Activity: 50.7% Activity: 50.7%
Last Achievements
Award-Showcase
NMR Credits: 0
NMR Points: 0
Downloads: 0
Uploads: 0
Default Anin situelectrochemical cell for Q- and W-band EPR spectroscopy
Anin situelectrochemical cell for Q- and W-band EPR spectroscopy


Publication year: 2011
Source: Journal of Magnetic Resonance, Available online 22 September 2011

Paul R.*Murray, David*Collison, Simon*Daff, Nicola*Austin, Ruth*Edge, ...

A simple design for anin 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 thein situgeneration 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.

Graphical abstract



Highlights

? In situ EPR/ESR spectroelectrochemistry at high frequency. ? 3-electrode cells in standard Q- and W-band silica tubes. ? Variable temperature operation, including frozen solutions. ? Example operation on ubiquinone, bpipyridines and their platinum complexes, and a flavin protein.



Source: Journal of Magnetic Resonance
Reply With Quote

Did you find this post helpful? Yes | No