Inside Porphyrins Involved in Assembly Processes

METALS INSIDE PORPHYRINS INVOLVED IN ASSEMBLY PROCESSES 

The dimerization of naturally occurring porphyiinoids was first evidenced in the 1960s by Katz and coworkers, who proposed structural models of dimerization, and oligomerization of chlorophylls in vitro. - For example. 

Naturally occurring chloropliylls and bacteriocliloro-Phylls aggregate also in vivo, as observed by X-ray 

It is remarkable that no polymeric systems were observed for 33. In discussing this point. Hunter and coworkers suggested that in the case of the 4-pyridyl-OT. ro-substituted porphyrin 29 of Fleischer et there was an equilibrium between a cyclic tetramer and a polymeric species, the latter being predominant at room temperature or higher. A definitive answer to this is.sue will be provided below. 

With very different aims, related to cooperativity effects, but still involving Fe-porpliyrins, Traylor and his 

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A. Metals Inside Porphyrins Involved in Assembly Processes. 7... 

A. METALS INSIDE PORPHYRINS INVOLVED IN ASSEMBLY PROCESSES... 

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