Authors
Leonid Ionov, Nikolay Houbenov, Alexander Sidorenko, Manfred Stamm, Igor Luzinov, Sergiy Minko
Publication date
2004/11/9
Journal
Langmuir
Volume
20
Issue
23
Pages
9916-9919
Publisher
American Chemical Society
Description
We report on a thin polyelectrolyte film (mixed polyelectrolyte brush) with a gradual change of the composition (ratio between two different oppositely charged surface-grafted weak polyelectrolytes) across the sample. The gradient of surface composition creates a gradient in surface charge density and, consequently, a gradient of the wetting behavior. The gradient film is sensitive to a pH signal and can be reversibly switched via pH change.
Total citations
Scholar articles
L Ionov, N Houbenov, A Sidorenko, M Stamm, I Luzinov… - Langmuir, 2004