Recently an effect of sequential electron transfer on electon spin polarized transient EPR spectra at high magnetic field from a natural photosynthetic system of purple bacteria has been investigated theoretically (J. Tang, S. Bondeson, M.C. Thurnauer, Chem. Phys. Lett 253:293-298, 1996). It has been shown that EPR at 95 GHz and higher frequencies can discriminate between different models of spin polarization. In order to check these theoretical predictions, we are designing a new W-band resonator suitable for in situ illunimation. We have already succeeded in building a ~50% transparent resonator consisting of a helix of silver wire on a plastic support. Modification of the cryogenic probehead to accommodate a light guide is under way.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
5P41RR001811-13
Application #
6120697
Study Section
Project Start
1998-04-15
Project End
1999-11-30
Budget Start
1997-10-01
Budget End
1998-09-30
Support Year
13
Fiscal Year
1998
Total Cost
Indirect Cost
Name
University of Illinois at Chicago
Department
Type
DUNS #
121911077
City
Chicago
State
IL
Country
United States
Zip Code
60612
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