Abstract
The layered structures formed by quaternary-ammonium-salt-type amphiphilic ionic liquids, including monomeric, identical and nonidentical alkyl chain-containing gemini, and star- and linear-structured three alkyl chain-containing trimeric types, were investigated by wide-angle X-ray scattering. A polyoxyethylene-type nonionic surfactant (C12EO6) was added to these amphiphilic ionic liquids, and the resulting layered structures were also elucidated. The spacing of the layers of the amphiphilic gemini ionic liquids increased with increasing fixed alkyl chain length in the two alkyl chains and differed according to the degree of alkyl chain dissymmetry. Amphiphilic trimeric ionic liquids displayed smaller layer spacings in linear structures than star structures, suggesting that the alkyl chains in the latter are loosely packed in layers due to the flexible spacer radiating from a central tertiary amine. Conversely, the alkyl chains in the linear structures are orderly and densely packed due to their close proximity. The addition of C12EO6 to the amphiphilic gemini and trimeric ionic liquids led to more ordered layers formed by the hydrophobic moiety, whereby the order decreased with increasing C12EO6 concentration.
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.
