In organic photovoltaics, effective fields break up excitons by causing the electron to fall from the conduction band of the absorber to the conduction band of the acceptor molecule.
12.
The electron accepting power of an acceptor molecule is measured by its electron affinity which is the energy released when filling the lowest unoccupied molecular orbital ( LUMO ).
13.
This family includes glucosyltransferases or sucrose 6-glycosyl transferases ( GTF-S ) ( CAZY GH _ 70 ) which catalyse the transfer of D-glucopyramnosyl units from sucrose onto acceptor molecules.
14.
The highly excited electrons are transferred to the acceptor molecule, but this time are passed on to an enzyme called Ferredoxin-NADP + reductase which uses them to catalyse the reaction ( as shown ):
15.
The possibility of the formation of a complex between sensitizer and acceptor molecules was excluded by the additivity of the absorption spectra and the different dependence on concentration to be expected in this case.
16.
That's where a key step in photosynthesis happens : The energy gathered by LH1 and LH2 pulls an electron out of still another chlorophyll molecule and attaches it to an " acceptor molecule ."
17.
In chemistry, the class of electron donors that donate not just one, but a set of two paired electrons that form a covalent bond with an electron acceptor molecule, is known as a Lewis base.
18.
For photosystem II, when either of the two chlorophyll " a " molecules at the reaction center absorb energy, an electron is excited and transferred to an electron acceptor molecule, pheophytin, leaving the chlorophyll " a " in an oxidized state.
19.
When the electron reaches photosystem I, it fills the electron deficit of the reaction-center chlorophyll of photosystem I . The deficit is due to photo-excitation of electrons that are again trapped in an electron acceptor molecule, this time that of photosystem I.
20.
The cyclic reaction takes place only at photosystem I . Once the electron is displaced from the photosystem, the electron is passed down the electron acceptor molecules and returns to photosystem I, from where it was emitted, hence the name " cyclic reaction ".
