Ultrafast exciton dynamics of J- and H-aggregates of the porphyrin-catechol in aqueous solution.


The aggregation behavior of 5,10,15-trisphenyl-20-(3,4-dihydroxy phenyl) porphyrin (L) in aqueous solution has been studied as a function of pH and concentration with the help of steady state absorption and emission spectroscopy. Our studies revealed that, for a particular concentration range, molecules of L undergo a reversible aggregation process and form… (More)
DOI: 10.1021/jp101643c