Structural characterisation of spread polyelectrolyte/surfactant films: new insight into tuneable reservoir formation
The recent discovery of how to control the formation of extended structures in spread polyelectrolyte/surfactant (P/S) films at the air/water interface marked an exciting advance over numerous previous observations of monolayer versus multilayer adsorption. It was achieved by tuning the charge of aggregates used in film preparation, which nucleate reservoirs of material upon spreading or surface area compression. Even so, the nature of the extended structures, in terms of loops, attached vesicles or multilayers, remained unresolved. We have now started to work on more a biologically relevant system - poly-l-lysine with sodium dodecyl sulfate (PLL/SDS) - with potential pharmaceutical applications in mind, which exhibits very different squeeze out dynamics to the system studied previously. This proposal aims to resolve the interfacial composition during film dynamics for the PLL/SDS system (low-Q approach) and perform the first structural characterisations of films formed using aggregates of different charge for both systems (full-Q approach). This work can represent a significant step towards finally resolving why extended structures form in certain P/S mixtures but not others.
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:
Richard A. Campbell; Javier Carrascosa-Tejedor; Eduardo Guzmán; M Jayne Lawrence; Armando Maestro; TUMMINO Andrea and VARGA Imre. (2020). Structural characterisation of spread polyelectrolyte/surfactant films: new insight into tuneable reservoir formation. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-614
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