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Effect of Support Material and Conditioning on Wettability of PAH/PSS Multilayer Films
|Marta Kolasińska , Piotr Warszyński|
Polish Academy of Sciences, Institute of Catalysis and Surface Chemistry, Niezapominajek 8, Kraków 30-239, Poland
The technique of layer-by-layer (lbl) deposition of polyelectrolytes allows to control the total thickness of multilayer film and its structure on a molecular level. Due to versatility of this technique, such self-assembled polyelectrolyte films have a great application potential. That is, they can be used for chemical and biochemical sensing, as separation membranes for gases or dissolved species and for modification of surface properties, which is of special importance in biomaterial area. It is often assumed that the properties of the polyelectrolyte multilayer films are independent of the underlying substrates. However, there should exist a minimal number of layers above which the properties of the system are governed by the choice of polycation/polyanion pair. The structure of the multilayer films is also strongly dependent on the deposition conditions and the most frequently used control parameters are ionic strength and pH of the solution. Also the long-time exposure to the conditions different than those encountered during deposition usually leads to the change of the polyelectrolyte multilayer structure.
Presentation: Short communication at SMCBS 2003 Workshop, by Marta Kolasińska
See On-line Journal of SMCBS 2003 Workshop
Submitted: 2003-10-10 13:09 Revised: 2009-06-08 12:55