English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/42607
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Effects of the distributions of energy or charge transfer rates on spectral hole burning in pigment-protein complexes at low temperatures

AuthorsHerascu, Nicoleta; Ahmouda, Somaya; Picorel Castaño, Rafael CSIC ORCID ; Seibert, Michael; Jankowiak, Ryszard J.; Zazubovich, Valter
photosystem II reaction center
Issue DateNov-2011
PublisherAmerican Chemical Society
CitationHerascu N, Ahmouda S, Picorel R, Siebert M, Jankowiak, RJ, Zazubovich V. Effects of the distributions of energy or charge transfer rates on spectral hole burning in pigment-protein complexes at low temperatures. Journal of Physical Chemistry B 115 (50): 15098–15109 (2011)
AbstractEffects of the distributions of excitation energy transfer (EET) rates (homogeneous line widths) on the non-photochemical (resonant) spectral hole burning (SHB) processes in photosynthetic chlorophyll-protein complexes (reaction center [RC] and CP43 antenna of Photosystem II from spinach) are considered. It is demonstrated that inclusion of such a distribution results in somewhat more dispersive hole burning kinetics. More importantly, however, inclusion of the EET rate distributions strongly affects the dependence of the hole width on the fractional hole depth. Different types of line width distributions have been explored, including those resulting from Förster type EET between weakly interacting pigments as well as Gaussian ones, which may be a reasonable approximation for those resulting, for instance, from so-called extended Förster models. For Gaussian line width distributions it is possible to determine the parameters of both line width and tunneling parameter distributions from SHB data without a priori knowledge of any of them. Concerning more realistic asymmetric distributions, we demonstrate, using the simple example of CP43 antenna, that one can use SHB modeling to estimate electrostatic couplings between pigments and support or exclude assignment of certain pigment(s) to a particular state.
Description51 Pags, 2 Tabls., 7 Figs. The definitive version is available at: http://pubs.acs.org/journal/jpcbfk
Publisher version (URL)http://dx.doi.org/10.1021/jp208142k
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
PicorelR_JPhysChemB_2011.pdf329,62 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.