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Coherent control of long-range photoinduced electron transfer by stimulated X-ray Raman processes

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3]
  1. Singapore Institute of Manufacturing Technology, Singapore 638075,
  2. Department of Chemistry, University of California, Irvine, CA 92697,
  3. Department of Chemistry, University of California, Irvine, CA 92697,, Department of Physics and Astronomy, University of California, Irvine, CA 92697
Significance

Electron transfer is ubiquitous in chemical reactions and many biophysical processes such as respiration and photosynthesis. In this work, we show how broadband X-ray pulses can be used to change the local electronic structures of donor–bridge–acceptor (DBA) molecular systems, thus enabling and controlling electron transfer between designated sites in the molecule. An X-ray–stimulated Raman process can control electron transfer with atomic specificity and ultrafast timescale. With an appropriate X-ray pulse setting, electron pathways can be selectively enhanced. The control can be implemented at the donor, bridge, or acceptor sites in a DBA system.

Research Organization:
Singapore Inst. of Manufacturing Technology (Singapore); Univ. of California, Irvine, CA (United States)
Sponsoring Organization:
Agency for Science, Technology and Research (A*STAR) (Singapore); National Science Foundation (NSF) (United States); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
FG02-04ER15571
OSTI ID:
1306667
Alternate ID(s):
OSTI ID: 1470115
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 36 Vol. 113; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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