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Título

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

Autor Hughes, Joseph L.; Prince, Barry J.; Årsköld, Sindra Peterson; Krausz, Elmars R.; Pace, Ron J.; Picorel Castaño, Rafael ; Seibert, Michael
Palabras clave Hole burning
Photoproduct
Vibration
CP43
Fecha de publicación jun-2004
EditorElsevier
Citación Journal of Luminescence 108 (1-4): 131-136 (2004)
ResumenThe chlorophyll-protein complex CP43 is a proximal-antenna subunit important for excitation energy transfer from peripheral light-harvesting antenna to the Photosystem II (PSII) reaction centre. We report persistent spectral hole burning at 1.7K in the Qy(0,0) origin and Q y(1,0) vibrational satellite bands of chlorophyll 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.
Descripción Proceedings of the Fourteenth International Conference on Dynamical Processes in Excited States of Solids
Versión del editorhttp://dx.doi.org/10.1016/j.jlumin.2004.01.030
URI http://hdl.handle.net/10261/98858
DOI10.1016/j.jlumin.2004.01.030
Identificadoresdoi: 10.1016/j.jlumin.2004.01.030
issn: 0022-2313
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