Photosynthesis oxidizing equivalent accumulation

For the general concept of artificial photosynthesis it is vital that the photoinduced charge shift reactions, which are one-electron processes, can be coupled to the multi-electron chemistry that results in stable products (H2, O2) and avoids high-energy intermediates. This requires catalytic donor and acceptor units that can accumulate oxidation and reduction equivalents, stabilize intermediates and catalyze 0-0 and H-H bond formation, respectively. The accumulative oxidation or reduction of such catalysts necessitate... 

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