Remote control of hydrophobic interactions between PDADMAC and arylazopyrazole sulfonate surfactants at the air-water interface
In this continuation proposal, we plan to address mixtures of polydiallyldimethylammonium chloride (PDADMAC) with two photoswitchable surfactants of varying hydrophobicity: butyl-arylazopyrazole sulfonate (butyl-AAP), which we have started to study previously, and octyl-AAP, which is new. Preliminary work shows that E/Z switching can lead to substantial changes in behavior in the bulk and at interfaces. Using neutron reflectometry (NR), we have started to exploit non-equilibrium aspects of polyelectrolyte/AAP mixtures by adapting them into responsive systems through resolving their switching ability, interfacial composition and structural changes at the air-water interface as a function of the bulk mixing ratio and light irradiation. Additional NR data involving custom-made deuterated surfactants over the full-Q range are required to complete the experimental objectives of proposal #9-11-1984 and include the neutron data in a planned publication, while unique molecular level details on the role of hydrophobic interaction in PDADMAC/AAP binding are proposed to support an additional publication focused on a comparison of the behavior of the butyl-AAP vs octyl-AAP systems.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
B. Braunschweig; Richard A. Campbell; GUTFREUND Philipp; HARDT Michael and HONNIGFORT Christian. (2021). Remote control of hydrophobic interactions between PDADMAC and arylazopyrazole sulfonate surfactants at the air-water interface. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-652
This data is not yet public
This data is not yet public
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