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B-alpha /B-beta Ring from Photosynthetic Complex LH4, Modeling of Absorption and Fluorescence Spectra

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Datum publikování

2016

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Absorption and steady state fluorescence spectra of B-alpha /B-beta ring from the light-harvesting (LH) pigment-protein complex LH4 are investigated in this contribution. The geometric structure of some LH complexes is known in great detail, e.g. for the LH2 and LH4 complexes from purple bacteria. The properties of such complexes are strongly influenced by their interactions with environment. These interactions could be modeled by static and dynamic disorder. Different types of static disorder are considered and discussed. Resulting spectral profiles within full Hamiltonian model are presented and compared with our previous results within the nearest neighbour approximation model. Distribution of the quantity P(alpha) d(alpha)^2 that appears in the expression for steady state fluorescence spectrum is also studied. Comparison of the results for B-alpha /B-beta ring from LH4 complex and B850 ring from LH2 complex is also done.

Rozsah stran

p. 332-344

ISSN

1998-0159

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Zdrojový dokument

International Journal of Mathematics and Computers in Simulation, volume 10, issue: srpen

Vydavatelská verze

http://www.naun.org/main/NAUN/mcs/2016/a862002-276.pdf

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open access

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Klíčová slova

LH4, LH2, absorption and fluorescence spectrum, static and dynamic disorder, LH4, LH2, absorpční a fluorescenční spektrum, statický a dynamický nepořádek

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