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Dynamics of charge separation in the excited-state chemistry of protochlorophyllide

Dietzek, Benjamin; Tschierlei, Stefanie; Hanf, Robert; Seidel, Sonja; Yartsev, Arkady LU ; Schmitt, Michael; Hermann, Gudrun and Popp, Juergen (2010) In Chemical Physics Letters 492(1-3). p.157-163
Abstract
In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme... (More)
In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme catalysed reaction. (C) 2010 Elsevier B. V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemical Physics Letters
volume
492
issue
1-3
pages
157 - 163
publisher
Elsevier
external identifiers
  • wos:000277717300031
  • scopus:77953285095
ISSN
0009-2614
DOI
10.1016/j.cplett.2010.04.027
language
English
LU publication?
yes
id
7081c7a8-e8ed-4d73-b52e-778892813355 (old id 1618011)
date added to LUP
2010-06-21 08:34:32
date last changed
2018-05-29 09:20:44
@article{7081c7a8-e8ed-4d73-b52e-778892813355,
  abstract     = {In this study the excited-state dynamics of protochlorophyllide a (PChlide), the substrate of the enzyme protochlorophyllide oxidoreductase, was examined by means of time-resolved absorption anisotropy and magic-angle measurements. The solvent polarity dependent anisotropy data provide strong evidence for the existence of an excited-state with charge-transfer character. A solvent dependency is also observed in the magic-angle kinetics. In a nonpolar environment wave packet oscillations are monitored while they are quenched in a polar solvent. These results show that the excited-state relaxations of PChlide are determined by the nature of the solvent environment. The implications of these findings are discussed with respect to the enzyme catalysed reaction. (C) 2010 Elsevier B. V. All rights reserved.},
  author       = {Dietzek, Benjamin and Tschierlei, Stefanie and Hanf, Robert and Seidel, Sonja and Yartsev, Arkady and Schmitt, Michael and Hermann, Gudrun and Popp, Juergen},
  issn         = {0009-2614},
  language     = {eng},
  number       = {1-3},
  pages        = {157--163},
  publisher    = {Elsevier},
  series       = {Chemical Physics Letters},
  title        = {Dynamics of charge separation in the excited-state chemistry of protochlorophyllide},
  url          = {http://dx.doi.org/10.1016/j.cplett.2010.04.027},
  volume       = {492},
  year         = {2010},
}