The first structural analogs of the photosynthetic reaction center (1 and 2) have been synthesized in which the electron acceptor is attached to an electron donor consisting of a pair of porphyrin subunits held within 3 Å of each other. Electrochemical studies of the anthraquinone derivative 1 suggest that the acceptor and the bis-(porphyrinato) zirconium subunit are interacting electronically.
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Girolami et al. (1996) studied this question.
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