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dc.creatorHayes, Patrick L.en_US
dc.creatorGeiger, Franz M.en_US
dc.date.accessioned2008-01-12T13:58:20Z
dc.date.available2008-01-12T13:58:20Z
dc.date.issued2007en_US
dc.identifier2007-WJ-16en_US
dc.identifier.urihttp://hdl.handle.net/1811/31469
dc.descriptionAuthor Institution: Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208en_US
dc.description.abstractSurfactants are important to a variety of industrial technologies, and they are critical components of detergents, lubricants and oil recovery fluids. It is now well known that surfactants can assume complex structures and morphologies when adsorbed to heterogeneous interfaces, which in turn can control surfactant function. The surface-specific nonlinear optical technique broadband vibrational sum frequency generation (SFG) is a powerful tool for characterizing and understanding these systems. Here, we present polarization-resolved SFG spectra of silica surfaces containing cetyltrimethylammonium bromide (CTAB), a common cationic surfactant that is known to form "worm-like" aggregates when adsorbed to the silica/water interface under proper conditions. Further insight into the structure, dynamics and aggregation of surfactants at interfaces can be obtained by combining SFG with the nonlinear technique Second Harmonic Generation (SHG). Using SFG and SHG we investigate the influence of surfactant concentration, pH and background electrolyte on the behavior of CTAB at silica interfaces.en_US
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleTHE SURFACTANT CTAB AT INTERFACES STUDIED BY BROADBAND VIBRATIONAL SUM FREQUENCY GENERATIONen_US
dc.typearticleen_US


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