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Plasmon induced modifications of the Förster energy transfer in reconstituted peridinin-chlorophyll-protein photosynthetic complex

Published online by Cambridge University Press:  14 January 2011

Mikolaj K. Schmidt ,
Alexander O. Govorov  and
Sebastian Mackowski
Mikolaj K. Schmidt*
Affiliation:
Institute of Physics, Nicolaus Copernicus University, Torun, Poland.
Alexander O. Govorov
Affiliation:
Department of Physics and Astronomy, Ohio University, Athens, Ohio, U.S.A.
Sebastian Mackowski
Affiliation:
Institute of Physics, Nicolaus Copernicus University, Torun, Poland.
*
*corresponding author: Mikolaj Kajetan Schmidt, email: 210580@fizyka.umk.pl
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Abstract

In this work we investigate theoretically the effects imposed by plasmon excitations in spherical metallic nanoparticles (MNPs) on the rate of energy transfer in peridinin-chlorophyll-protein (PCP) complex reconstituted with both chlorophyll a (Chl a) and chlorophyll b (Chl b). This light-harvesting complex is unique since it features efficient energy transfer both from higher-lying Chl b to lower-lying Chl a as well as in the opposite, less energy-favorable direction. The results of calculations show that the Förster energy transfer rate decreases with a MNP-PCP distance changing from 2 to 144nm, while the energy transfer from Chl a to Chl b remains less efficient at all distances. We conclude that plasmon excitations allow for controlling the energy transfer between Chls, as well as the excitation distribution between two spectrally distinguishable Chls within the reconstituted PCP complex.

Keywords

nanostructureoptical propertiesorganic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1286: Symposium E – Molecular and Hybrid Materials for Electronics and Photonics , 2011 , mrsf10-1286-e03-24
Copyright
Copyright © Materials Research Society 2011

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References

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