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Supramolecular arrays in which a free-base (or zinc) porphyrin is connected by axial coordination of its meso-pyridyl groups to one or more ruthenium porphyrin units have been studied by steady-state and time-resolved techniques. Besides their attractive structures—“open-box” or “flying saucer”—these arrays exhibit interesting photophysical behavior.
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Prodi et al. (1999) studied this question.
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