In this study, different basicity of the pyridyl substituents of meso-tetra(pyridyl)porphyrins and the substituents of the common impurities associated with the synthesis of the porphyrins has been utilized to improve and simplify the purification of these porphyrins. Also, diprotonation of meso-tetraarylporphyrins with weak or strong acids and the associated shifts of the Soret and Q(0,0) bands have been used for the spectrophotometric detection of trace to substantial amounts of unreacted porphyrin upon complexation of porphyrins with iron and manganese.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.