Light-harvesting molecules

Light-harvesting molecules on a planet around a local star have developed an absorption spectrum to collect light at the maximum flux from the local star... 

In a broad sense photosynthesis in plants is a photoinduced electron transport reaction. Chlorophyll molecules in the green plants are the main light harvesting molecules. They are assisted by carotenoids and phycocyanins in this act. These molecules have absorption in the visible region covering the whole spectrum from blue to red. The energy absorbed by all these molecules is transferred to chlorophyll a (Chi a), which is the main light sensitive molecule, by mechanisms discussed in Section 6.6.4. 

No. Most chlorophylls are light-harvesting molecules that transfer energy to the special pair that takes part in the light reactions. 

Probably the most important biochemical process on earth is the photosynthesis within the chlorophyl cells in green plants. The photosynthesis process in the chlorophyll complex consists of two parts. In the primary process, light-harvesting molecules with a broad absorption spectrum in the visible absorb photons from sunlight. This leads to molecular electronic excitation. The excited molecules surrounding the central reaction center (Fig. 10.36) can transfer the excited electron in several steps to the molecules in the reaction center, where the secondary process, namely the chemical reaction... 

Karolewski A, Stein T, Baer R, Kummel S (2011) Communication tailoring the optical gap in light-harvesting molecules. J Chem Phys 134 151101... 

Semiconductor nanoparticles having size below the Bohr Exciton size for the materials (QDs) have been viewed as the potential materials for solar cells both hybrid and sensitized one in which these are used as light harvesting molecules and/or sensitizers. Quantum dot (QD)-sensitized solar cells (QDSCs) have shown promising developments for the next generation of solar cells [238-243] as an alternate of dye sensitized solar cells (DSCs) [244]. 

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