Solute transfer between microemulsion droplets composed of sodium dioleylphosphate and sodium bis(2-ethylhexyl) sulfosuccinate mixture

We have already reported that the microemulsion system composed of sodium d ioleylphosphate (SDOLP) and sodium bis(2-ethylhexyl) sulfosuccinate mixture s has peculiar dynamic properties, i.e., slow solute-exchange between the b ulk aqueous phase and microemulsion droplets with increasing SDOLP content in total surfactants, and fast exchange between microemulsion droplets. In this work, as a supplement to that report, we present the full data concern ed with the interdroplet solute-exchange process with the aid of time-resol ved fluorescence. The specific rate of the interdroplet quencher-exchange i s 10(8) dm(3)mol(-1)s(-1) in order of magnitude, and is insensitive to the SDOLP-content, The quenching process between the fluorescence probe and the quencher in a droplet was markedly decreased with increasing SDOLP-content , The droplet concentration determined from this quenching process approxim ately agrees with those evaluated from a geometric model.