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Time-resolved X-ray absorption spectroscopy for the study of molecular systems relevant for artificial photosynthesis

Smolentsev, G. and Sundström, Villy LU (2015) In Coordination Chemistry Reviews 304. p.117-132
Abstract
Transition metal coordination compounds have a rich photochemistry and are interesting candidates as both light harvesters (photosensitizers) and catalysts in photocatalytic systems. Knowledge of electronic and molecular structure of excited states of photosensitizers and intermediates of catalysts is a key topic for rational design of systems for artificial photosynthesis. We describe recent advances in the field of time-resolved X-ray absorption spectroscopy that provide information on local structure around metal centers, their orbital structure and oxidation state, and thereby insights into the mechanisms of their photochemical reactions. Photosensitizers with metal centers, multicomponent molecular catalytic systems, and... (More)
Transition metal coordination compounds have a rich photochemistry and are interesting candidates as both light harvesters (photosensitizers) and catalysts in photocatalytic systems. Knowledge of electronic and molecular structure of excited states of photosensitizers and intermediates of catalysts is a key topic for rational design of systems for artificial photosynthesis. We describe recent advances in the field of time-resolved X-ray absorption spectroscopy that provide information on local structure around metal centers, their orbital structure and oxidation state, and thereby insights into the mechanisms of their photochemical reactions. Photosensitizers with metal centers, multicomponent molecular catalytic systems, and supramolecular model sensitizer-catalysts with two metal centers are used as examples to demonstrate the possibilities of the technique. We overview different experimental methods that can be used to investigate intermediates with lifetimes in the range from hundreds of picoseconds to hundreds of microseconds. Theoretical methods to extract the structural and electronic information from X-ray absorption near edge structure spectroscopy (XANES) are also discussed. (C) 2015 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Transient X-ray absorption, Photo-catalysis, XANES, XAS, Excited state, structure, Intermediate of catalyst
in
Coordination Chemistry Reviews
volume
304
pages
117 - 132
publisher
Elsevier
external identifiers
  • wos:000361408100010
  • scopus:84940450022
ISSN
0010-8545
DOI
10.1016/j.ccr.2015.03.001
language
English
LU publication?
yes
id
181700a5-b694-48d7-b890-8f0638c7b166 (old id 8071082)
date added to LUP
2015-10-22 08:58:06
date last changed
2016-12-22 13:23:09
@article{181700a5-b694-48d7-b890-8f0638c7b166,
  abstract     = {Transition metal coordination compounds have a rich photochemistry and are interesting candidates as both light harvesters (photosensitizers) and catalysts in photocatalytic systems. Knowledge of electronic and molecular structure of excited states of photosensitizers and intermediates of catalysts is a key topic for rational design of systems for artificial photosynthesis. We describe recent advances in the field of time-resolved X-ray absorption spectroscopy that provide information on local structure around metal centers, their orbital structure and oxidation state, and thereby insights into the mechanisms of their photochemical reactions. Photosensitizers with metal centers, multicomponent molecular catalytic systems, and supramolecular model sensitizer-catalysts with two metal centers are used as examples to demonstrate the possibilities of the technique. We overview different experimental methods that can be used to investigate intermediates with lifetimes in the range from hundreds of picoseconds to hundreds of microseconds. Theoretical methods to extract the structural and electronic information from X-ray absorption near edge structure spectroscopy (XANES) are also discussed. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Smolentsev, G. and Sundström, Villy},
  issn         = {0010-8545},
  keyword      = {Transient X-ray absorption,Photo-catalysis,XANES,XAS,Excited state,structure,Intermediate of catalyst},
  language     = {eng},
  pages        = {117--132},
  publisher    = {Elsevier},
  series       = {Coordination Chemistry Reviews},
  title        = {Time-resolved X-ray absorption spectroscopy for the study of molecular systems relevant for artificial photosynthesis},
  url          = {http://dx.doi.org/10.1016/j.ccr.2015.03.001},
  volume       = {304},
  year         = {2015},
}