Abstract
In the present paper, conformational and structural properties of aggregated structures, spontaneously formed via “self-assembly” in water solution, were studied by means of static and dynamic light scattering, UV–vis and Fluorescence Spectroscopy measurements.It was observed that small changes on the chemical structure [different position of poly(ethylene glycol) hydrophilic branches around the porphyrin unit] or molecular size (with the presence of two or three porphyrin units inside a cyclic structure) of the starting compound resulted in changes of the optical properties, size and even local architecture of the self-assembled aggregates. In particular the poly(ethylene glycol) branches position around the porphyrin cores influenced significantly the formation of H- or J-type porphyrin aggregates and their properties.
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