Monitoring Long-Range Electron Transfer Pathways in Proteins by Stimulated Attosecond Broadband X-ray Raman Spectroscopy | Zendy

Yu Zhang | Zendy; Jason D. Biggs | Zendy; Niranjan Govind | Zendy; Shaul Mukamel | Zendy

Open Access

Monitoring Long-Range Electron Transfer Pathways in Proteins by Stimulated Attosecond Broadband X-ray Raman Spectroscopy

Author(s) -

Yu Zhang,

Jason D. Biggs,

Niranjan Govind,

Shaul Mukamel

Publication year - 2014

Publication title -

the journal of physical chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.563

H-Index - 203

ISSN - 1948-7185

DOI - 10.1021/jz501966h

Subject(s) - attosecond , azurin , raman spectroscopy , electron transfer , spectroscopy , range (aeronautics) , chemistry , electron , infrared , optoelectronics , materials science , photochemistry , optics , physics , laser , ultrashort pulse , quantum mechanics , composite material

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.

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