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• W2049701665 abstract "We analyze a theoretical model for energy and electron transfer in an artificial photosynthetic system. The photosystem consists of a molecular triad (i.e., with a donor, a photosensitive unit, and an acceptor) coupled to four accessory light-harvesting antennas pigments. The excitation energy transfer from the antennas to the artificial reaction center (the molecular triad) is here described by the F{o}rster mechanism. We consider two different kinds of arrangements of the accessory light-harvesting pigments around the reaction center. The first arrangement allows direct excitation transfer to the reaction center from all the surrounding pigments. The second configuration transmits energy via a cascade mechanism along a chain of light-harvesting chromophores, where only one chromophore is connected to the reaction center. At first sight, it would appear that the star-shaped configuration, with all the antennas directly coupled to the photosensitive center, would be more efficient. However, we show that the artificial photosynthetic system using the cascade energy transfer absorbs photons in a broader wavelength range and converts their energy into electricity with a higher efficiency than the system based on direct couplings between all the antenna chromophores and the reaction center." @default.
• W2049701665 created "2016-06-24" @default.
• W2049701665 creator A5042193075 @default.
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• W2049701665 date "2011-12-22" @default.
• W2049701665 modified "2023-10-05" @default.
• W2049701665 title "Artificial photosynthetic reaction centers coupled to light-harvesting antennas" @default.
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• W2049701665 doi "https://doi.org/10.1103/physreve.84.061138" @default.
• W2049701665 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22304071" @default.
• W2049701665 hasPublicationYear "2011" @default.
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