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Updated: Aug 14, 2026

Synthesis and Characterization of Supramolecular Colloids
Published on: April 22, 2016
Light scattering enhancement in an aqueous solution of spermine-induced fractal -aggregate composite
Norberto Micali1, Valentina Villari, Luigi Monsù Scolaro
1CNR, Istituto per i Processi Chimico-Fisici, sezione Messina, Via La Farina 237, I-98123 Messina, Italy. micali@me.cnr.it
Abstract:
We performed an experimental investigation on the scattering and extinction properties of an aqueous solution of spermine-induced fractal J aggregates, constituted by porphyrin molecules. In analogy with nanostructured particle composites, the dipolar moments of different porphyrins, not belonging to the aggregates J, are coupled and generate a strong light scattering enhancement. Both the enhanced scattered intensity and the imaginary part of the polarizability of the system obey scaling laws with the optical spectral dimension d0=0.3.

