Investigation of conformational changes of polyelectrolyte chains in LbL-films upon adsorption at solid interfaces
PEMs can be considered polyelectrolyte complexes at interfaces that are fabricated using Layer-by-Layer (LbL) assembly. Depending on various parameters, polyelectrolyte complexes in bulk possess either a "brush-like" or a "pancake" structure, it is not clear how structure formation in PEMs occurs through a stepwise assembly process. In contrast to polyelectrolyte behavior in solution, individual layers are thinner when deposited from salt free solutions and thicker when deposited at high salt concentrations. Our first GISANS measurements showed that the polyelectrolytes chains have a flattened coil conformation in films composed of poly(allylamine) (PAH) and poly(styrenesulfonate) (PSS) for one preparation condition. GISANS on films composed of different polymers under different preparation conditions will allow us to determine the conformation of the polyelectrolyte chains in each cases and, after enough measurement, to understand more the mechanism of deposition of the multilayer films.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
HIGY Christophe; DECHER Gero; FRAGNETO Giovanna and GUTFREUND Philipp. (2014). Investigation of conformational changes of polyelectrolyte chains in LbL-films upon adsorption at solid interfaces. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-1684
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.