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Photoconversion of chlorophylls in higher-plant CP43 characterized by persistent spectral hole burning at 1.7 K.

Hughes, Joseph L; Prince, Barry J; Peterson Årsköld, Sindra LU ; Krausz, Elmars; Pace, Ron J; Picorel, Rafael and Seibert, Mikael (2004) In Journal of Luminescence 108(1-4). p.131-136
Abstract
The chorophyll-protein complex CP43 is a proximal-antenna subunit important for excitation energy transfers from peripheral light-harvesting antenna to the Photosystem II (PSII) reaction centre. We report persistent spectral hole burning at 1.7 K in the Qy(0,0) origin and Qy(1,0) vibrational satellite bands of chorophyll a (chl a) in CP43 isolated from higher plants. The isolated CP43 is known to possess two quasi-degenerate 'red' trap states. We find persistent hole burning in the primary trap exhibits a photoconversion property, with a photoproduct located well outside its inhomogeneous distribution. This photoconversion of trap chl a molecules also occurs with non-selective white light illumination. The contribution of the 'red' states... (More)
The chorophyll-protein complex CP43 is a proximal-antenna subunit important for excitation energy transfers from peripheral light-harvesting antenna to the Photosystem II (PSII) reaction centre. We report persistent spectral hole burning at 1.7 K in the Qy(0,0) origin and Qy(1,0) vibrational satellite bands of chorophyll a (chl a) in CP43 isolated from higher plants. The isolated CP43 is known to possess two quasi-degenerate 'red' trap states. We find persistent hole burning in the primary trap exhibits a photoconversion property, with a photoproduct located well outside its inhomogeneous distribution. This photoconversion of trap chl a molecules also occurs with non-selective white light illumination. The contribution of the 'red' states to CP43 absorption is discussed. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
photoproduct, vibration, CP43, hole burning
in
Journal of Luminescence
volume
108
issue
1-4
pages
131 - 136
publisher
Elsevier
external identifiers
  • scopus:2342593330
ISSN
0022-2313
DOI
10.1016/j.jlumin.2004.01.030
language
English
LU publication?
yes
id
e3b9d1b2-28c8-422d-b600-980ad6f2ed72 (old id 120906)
date added to LUP
2007-07-05 14:37:02
date last changed
2017-11-12 04:05:24
@article{e3b9d1b2-28c8-422d-b600-980ad6f2ed72,
  abstract     = {The chorophyll-protein complex CP43 is a proximal-antenna subunit important for excitation energy transfers from peripheral light-harvesting antenna to the Photosystem II (PSII) reaction centre. We report persistent spectral hole burning at 1.7 K in the Qy(0,0) origin and Qy(1,0) vibrational satellite bands of chorophyll a (chl a) in CP43 isolated from higher plants. The isolated CP43 is known to possess two quasi-degenerate 'red' trap states. We find persistent hole burning in the primary trap exhibits a photoconversion property, with a photoproduct located well outside its inhomogeneous distribution. This photoconversion of trap chl a molecules also occurs with non-selective white light illumination. The contribution of the 'red' states to CP43 absorption is discussed.},
  author       = {Hughes, Joseph L and Prince, Barry J and Peterson Årsköld, Sindra and Krausz, Elmars and Pace, Ron J and Picorel, Rafael and Seibert, Mikael},
  issn         = {0022-2313},
  keyword      = {photoproduct,vibration,CP43,hole burning},
  language     = {eng},
  number       = {1-4},
  pages        = {131--136},
  publisher    = {Elsevier},
  series       = {Journal of Luminescence},
  title        = {Photoconversion of chlorophylls in higher-plant CP43 characterized by persistent spectral hole burning at 1.7 K.},
  url          = {http://dx.doi.org/10.1016/j.jlumin.2004.01.030},
  volume       = {108},
  year         = {2004},
}