Can I read Artificial Photosynthetic Reaction Centers Coupled to Light-harvesting Antennas on EtoBox?

Artificial Photosynthetic Reaction Centers Coupled to Light-harvesting Antennas by Ghosh, Pulak Kumar; Smirnov, Anatoly Yu.; Nori, Franco is a scholarly article available to read on EtoBox.

What is Artificial Photosynthetic Reaction Centers Coupled to Light-harvesting Antennas about?

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 effic

Author

Ghosh, Pulak Kumar; Smirnov, Anatoly Yu.; Nori, Franco

Published

2010

Language

EN