Visualizing Photochemical Dynamics in Solution through Picosecond X-Ray Scattering

Richard Neutze, Remco Wouts, Simone Techert, Jan Davidsson, Menhard Kocsis, Adam Kirrander, Friedrich Schotte, and Michael Wulff
Phys. Rev. Lett. 87, 195508 – Published 23 October 2001
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Abstract

A photoexcited state of molecular iodine in solution is observed using diffuse x-ray scattering at a synchrotron source. The measured changes in the diffuse scattering profile were consistent with earlier models of iodine's photodissociation and geminate recombination reaction, for which the recombined A/A state has a 0.4 Å greater interatomic spacing than the resting state and has a lifetime of 500 ps in CH2Cl2. This technique should find application in the study of increasingly complicated photochemical systems which undergo structural rearrangements following rapid photolysis.

  • Received 30 March 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.195508

©2001 American Physical Society

Authors & Affiliations

Richard Neutze1,*, Remco Wouts2, Simone Techert3, Jan Davidsson4, Menhard Kocsis3, Adam Kirrander2, Friedrich Schotte3, and Michael Wulff3,†

  • 1Department of Molecular Biotechnology, Chalmers University of Technology, P.O. Box 462, SE 40530 Göteborg, Sweden
  • 2Department of Biochemistry, Biomedical Centre, Box 576, Uppsala University, S-75123 Uppsala, Sweden
  • 3European Synchrotron Radiation Facility, BP 220, Grenoble Cedex 38043, France
  • 4Department of Physical Chemistry, Box 532, Uppsala University, S-75121 Uppsala, Sweden

  • *Corresponding author. Email address: neutze@xray.bmc.uu.se
  • Corresponding author. Email address: wulff@esrf.fr

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Vol. 87, Iss. 19 — 5 November 2001

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