They are strong reducing agents ( very negative redox potentials ) and function as electron carriers, for example in photosynthesis and nitrogen fixation 它們是強的還原性物質(很低的氧化還原電位)以及作為電子載體起作用,如在光合作用和固氮作用中。
On the other hand, the slow component of df is ascribed to the state qb-the next electron carrier of deoxidized side in ps ii . furthermore, we testified that the third component with lifetime much greater than the time of the registration period ( which is presented as a constant ), is corresponds to the recombination of p680 + and the backward transport electron from ps i 延遲熒光的衰減動力學依賴于從q回流的電子(electron)與氧化態(tài)的p680~+,其中快相延遲熒光成份源于q_a~-上電子回流與p680~+的復合產生,慢相成份源于q_b~=上電子的回流與p680~+的復合產生。