Abstract
We examined the immiscibility of fluorocarbon and hydrocarbon surfactants having the same head groups, i.e., lithium 1,1,2,2-tetrahydroheptadecafluorodecyl sulfate (LiHFDeS) and lithium tetradecyl sulfate (LiTS). The micellar pseudophase diagram was determined by conductivity and fluorescence quenching methods. The coexistence of two kinds of micelles has been demonstrated by the fluorescence quenching of pyrene with a fluorocarbon quencher. Pyrene is located in LiTS-rich micelles, and its fluorescence is quenched by micelle-solubilized quenchers. However, the pyrene fluorescence is hardly quenched by a fluorocarbon quencher when a second type of micelle rich in fluorocarbon surfactant appears. The collision probability between the fluorocarbon quencher and pyrene will be small within the lifetime of the excited pyrene because the fluorocarbon quencher and pyrene are separately solubilized in LiTS-rich and LiHFDeS micelles, respectively. The effect of addition of salt on the depression of quenching was also examined.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
