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. 2019 May 16;7(12):10435–10444. doi: 10.1021/acssuschemeng.9b00738

Figure 3.

Figure 3

Photochemical activity of PSI. (a) Light-dependent P700 oxidation of PSI in detergent or in PLGA MPs measured as transient absorption at 705 nm. Ascorbate (Asc) and methyl-viologen (MV) were added where indicated as electron donor and acceptor, respectively. Orange actinic light at 940 μmol m–2 s–1 were used to induce P700 oxidation. P700 oxidation kinetics were normalized to the chlorophyll content of each sample. (b) Light-dependent P700 oxidation measured under limiting light (12 μmol m–2 s–1) in the presence of electron donors and acceptors. Kinetics traces were in this case normalized to the maximum value. In these conditions, the kinetics of P700 oxidation are inversely proportional to PSI light-harvesting properties.