Kinetic Investigations on the Chiral Induction by Amino Acids in Porphyrin J-Aggregates.

ABSTRACT: The self-assembling kinetics of the 5,10,15,20-tetrakis(4-sulfonato-phenyl)porphyrin (TPPS₄) into nano-tubular J-aggregates under strong acidic condition and in the presence of amino acids as templating chiral reagents have been investigated through UV/Vis spectroscopy. The ability of the chiral species to transfer its chiral information to the final J-aggregate has been measured through circular dichroism (CD) spectroscopy and compared to the spontaneous symmetry breaking process usually observed in these nano-aggregates. Under the experimental conditions here selected, including mixing protocol, we have observed a large difference in the observed aggregation rates for the various amino acids, those with a positively charged side group being the most effective. On the co

SUBMITTER: Zagami R 

PROVIDER: S-EPMC9860692 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature