
This photon absorption causes an electron to be transferred from
the special pair to another, single molecule of chlorophyll. If the
transformation from light energy to chemical energy is 100%
efficient (and it actually is very nearly so) what is the minimum
reduction potential that the accepter cholorphyll can have with
respect to the donor?
LN Mg In the photosynthetic reaction center, the biomolecule in which solar energy conversion takes place, an unusual closely packed arrangement of two chlorophyll molecules, called the ‘special pair, absorbs light at 870 nm (not coincidentally the solar emission maximum). Chlorophylls look like hemes but are designed to better do photochemistry:





