Rhodamine Dye And Surfactant Molecules And Their Molecular Assemblies Interaction

In this paper, CTAB, SDS, SDBS, DBSA, and O# were mixed with rhodamine B in different concentrations, and the surface tensions of single and mixed systems were determined by the largest air bubble method and the spinning drop method. It has shown that the surface tension curves of the surfactants in the presence of RB have been changed a little compared with those in the absence of RB, but the apparent critical micelle concentratins (cmc) of the surfactants haven't been changed almostly. The absorption and fluorescence spectra of RB and surfactants mixed systems were also investigated, and the interaction between RB and surfactants micelle were discussed too. Aggregation numbers of micelle (N) of CTAB were determined by steady-state fluorescence probe method in which RB was used as fluorescence probe and quencher.In this work, inorganic nanoparticles BaMoO4 and organic nanoparticles PAN were prepared in different reverse micelles (AOT, OP or O # and CTAB) and characterized with transmission electron microscopy(TEM). The absorption and fluorescence properties of RB have been investigated. The effects of surfactants on the interaction of RB and BaMoO4 and PAN nanoparticles in reverse micelles have been studied. The results showed that a small part of RB adsorbed on the surface of BaMoO4 and PAN. The formation of dimers of RB has also been discussed.