The aggregative properties of rhodamine 6G (R6G) and rhodamine B (RB) in aqueous solutions of cationic
and anionic surfactants were studied using the absorption and fluorescence spectroscopic methods. The
dye–surfactant interactions in aqueous and surfactant solutions were also studied. The spectroscopic
studies were extended in order to determine the effect of molecular structure of the surfactants on the
aggregative behavior of the rhodamine dyes. The aggregate structures and the nature of the interacting
pairs in these dyes were discussed using the exciton theory
