Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 5, Issue 21, Pages 3656-3661Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jz501966h
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Funding
- Chemical Sciences, Geosciences and Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy
- National Science Foundation [CHE-1361516]
- National Institutes of Health [GM-59230]
- Department of Energy's Office of Biological and Environmental Research located at Pacific Northwest National Laboratory
- Direct For Mathematical & Physical Scien [1361516] Funding Source: National Science Foundation
- Division Of Chemistry [1361516] Funding Source: National Science Foundation
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Long-range electron transfer (ET) is a crucial step in many energy conversion processes and biological redox reactions in living organisms. We show that newly developed X-ray pulses can directly probe the evolving oxidation states and the electronic structure around selected atoms with detail not available through conventional time-resolved infrared or optical techniques. This is demonstrated in a simulation study of the stimulated X-ray Raman (SXRS) signals in Re-modified azurin, which serves as a benchmark system for photoinduced ET in proteins. Nonlinear SXRS signals offer a direct novel window into the long-range ET mechanism. [GRAPHICS]
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