View Single Post
  #1  
Unread 03-12-2011, 05:21 PM
nmrlearner's Avatar
nmrlearner nmrlearner is offline
Senior Member
 
Join Date: Jan 2005
Posts: 23,134
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 Continuous-wave EPR at 275 GHz: Application to high-spin Fe3+ systems

Continuous-wave EPR at 275 GHz: Application to high-spin Fe3+ systems


Publication year: 2011
Source: Journal of Magnetic Resonance, In Press, Accepted Manuscript, Available online 11 March 2011

G., Mathies , H., Blok , J.A.J.M., Disselhorst , P., Gast , H., van der Meer , ...

The 275 GHz electron-paramagnetic-resonance spectrometer we reported on in 2004 has been equipped with a new probe head, which contains a cavity especially designed for operation in continuous-wave mode. The sensitivity and signal stability that is achieved with this new probe head is illustrated with 275 GHz continuous-wave spectra of a 1 mM frozen solution of the complex Fe(III)-ethylenediamine tetra-acetic acid (EDTA) and of 10 mM frozen solutions of the protein rubredoxin, which contains Fe3+ in its active site, from three different organisms. The high quality of the spectra of the rubredoxins allows the determination of the zero-field splitting parameters...

Graphical abstract

*Graphical abstract:**Research Highlights:*? 275 GHz continuous-wave EPR spectroscopy on high-spin Fe3+ systems using a specialized single-mode cavity. ? Sensitivity and signal stability are illustrated on dilute solutions of Fe(III)-EDTA and rubredoxin. ? Zero-field-splitting parameters and g-anisotropy were determined accu-rately by simulation of the spectra




Source: Journal of Magnetic Resonance
Reply With Quote


Did you find this post helpful? Yes | No