The special pair of the bacterial photosystem has been modeled with a porphyrin dimer (the partial structure is shown). As with the natural system, only one pyrrole ring from each monomer subunit participates in π overlap.
Das Kernstück des bakteriellen Lichtsammelsystems wird durch ein Porphyrindimer als Modellverbindung nachgeahmt (zentrale Teilstruktur siehe Bild). Dieses Dimer wurde gezielt so synthetisiert, daß wie beim natürlichen Pendant nur die π‐Elektronensysteme jeweils eines Pyrrolrings miteinander wechselwirken.
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