ABSTRACT
To determine the photophysical and photochemical properties of unsubstituted phthalocyanines (MPc, M = Mg, Al, ZrL2, SiCl2, V=O, 2H) in their aggregates supramolecular systems have been developed on the basis of protein (albumin), micelles, biocompatible hydrophilic polymers, and nanoscale silica. The ability of MPc in supramolecular systems to form aggregates of different types depends on the nature of the central metal ion and microenvironment. The dependence of the type of MPc photoactivity method on aggregation was shown. H-aggregates exhibit selective photoactivity in electron transfer to O2 to form ROS (triplet-triplet energy transfer and fluorescence are impossible). Monomers and J-aggregates of MPc fluoresce and may also participate in the triplet-triplet energy transfer with the formation of 1O2. Spectral properties of J-correspond to the requirements of the photosensitizer.
