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Instrumentation|Department of Chemistry

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Chemistry Department
Department 3838
1000 E. University Avenue
Physical Science Bldg 403
Laramie, WY 82071
Phone: 307-766-2479
Fax: 307-766-2807
Email: chemistry@uwyo.edu

  EPR Spectrometer

Room 12, Physical Sciences Building

Phone Number: (307) 766-4320 and (307) 766-6364

E-mail: arulsamy@uwyo.edu

Electron paramagnetic resonance (EPR) spectroscopy is commonly employed to analyze paramagnetic species. Inorganic complexes that contain paramagnetic metal ions, paramagnetic metal ion-containing proteins and organic radicals are amenable to EPR spectroscopy. The Chemistry Department owns a Bruker EMX Spectrometer. The spectrometer is located in Room 12 in the basement of the Physical Sciences Building.


EPR measurements can be performed in the X-band (9.5 GHz) at room temperature and at low temperatures with the availability of an Oxford liquid nitrogen/helium cryostat. The instrument incorporates a Bruker ER 041 XG microwave bridge. A high sensitivity resonator ER4119HS and a dual mode cavity ER4116DM are available for use. ER4119HS is suitable for experiments with single unpaired electron-containing compounds, and the dual mode resonator is suitable for anisotropic studies of triplets, biradicals, and of transition metal and rare earth ions containing 'forbidden' fine structures or hyperfine structure transitions.


EPR spectra are usually measured for both solid and solution samples. Quartz sample tubes are used to maximize sensitivity. A new AquaX sample cell specifically designed for aqueous and other lossy solutions is also available. New users will need to be trained on the instrument. Please contact Dr. Navamoney Arulsamy if you would like to schedule a session for your experiment.

EPR

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