Spectral manifestation of diacid formation for ostalkylporhyrins in fluorescence line narrowing spectra

Abstract

Many porphyrins moieties in their natural protein environment are highly distorted from planarity have been observed several years ago. As a result of this interest in the properties of nonplanarity of naturally occurring porphyrins, numerous synthetic model porphyrins have been made which mimic these distortions. The spectroscopic investigations of porphyrins at low temperatures may be very effective for studies of distortions of their planar structure under influence of matrices, different kinds of substitution in structure of porphyrin macrocycle, etc. For molecule of porphine with Mg(ll), Zn(ll) and Pd(U) ions the effect of stabilization of different spectral forms in solid matrices was recently demonstrated in fluorescence spectra.