Tuning mechanical properties of spread polypeptide/surfactant films by specific interactions. Relationship with their structure and dynamics
The work carried out over the last years on spread polyelectrolyte/surfactant (P/S) films at the air/water interface has resulted in important outcomes. The important role of polymer rigidity and compensation of interfacial charges on the stabilization of extended structures has recently been demonstrated. Besides, control over the formation of 2D vs 3D structures in poly-L-Lysine (PLL) and sodium dodecyl sulfate (SDS) films has also been shown. However, control over the interfacial properties and structure of the films by tuning specific P/S interactions is missing. To study the influence of such interactions between SDS headgroups and different polypeptides, we have used poly-L-arginine (PLA)/SDS films. In addition, the use of high compression ratios showed interesting film mechanical properties. This proposal aims to resolve the composition (low-Q approach) and structural changes (mid-Q approach) taking place during dynamics, as well as the structure of PLA/SDS films and complete the study of PLL/SDS films. This work can show for the first time the possibility to tune the mechanical properties and structure of P/S films through the design of specific P/S interactions.
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The recommended format for citing this dataset in a research publication is in the following format:
Javier Carrascosa-Tejedor; Richard A. Campbell; Glenn J. Coope; GUTFREUND Philipp; M Jayne Lawrence; Armando Maestro; MATEO MINARRO Laura; P. Sánchez-Puga; SANTAMARIA Andreas; VARGA Imre and XAVIER Pinchu. (2023). Tuning mechanical properties of spread polypeptide/surfactant films by specific interactions. Relationship with their structure and dynamics. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-12-668
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