Results 171 to 180 of about 4,374 (220)

Interdiffusion in Polyelectrolyte Multilayers

Macromolecules, 2010
Using neutron reflectivity, the internal structure of polyelectrolyte multilayers is described on the nanoscale. Each film consists of a protonated and a deuterated block, built from x protonated and y deuterated polycation/polyanion bilayers, respectively.
Soltwedel, O., Ivanova, O., Nestler, P., Müller, M., Köhler, R., Helm, C.   +5 more
openaire   +2 more sources

POLYELECTROLYTE MULTILAYERS AND THEIR INTERACTIONS

Journal of Adhesion, 2004
An overview is given of our recent IR spectroscopic, optical, electrokinetic, and microscopic studies on polyelectrolyte multilayers (PEMs), built up using the consecutive layer-by-layer technique, their interactions, and application possibilities. The influence of pH on the deposition of PEMs consisting of commercial polyelectrolytes (PELs) like poly ...
K -J Eichhorn, Andreas JANKÉ, B Kesler   +2 more
exaly   +2 more sources

Ordered Polyelectrolyte Multilayers: Unidirectional FRET Cascade in Nanocompartmentalized Polyelectrolyte Multilayers

ChemPhysChem, 2009
AbstractMultifunctional polyelectrolyte (or layer‐by‐layer, LbL) multilayers consisting of a set of nanocompartments separated by impermeable ultrathin barriers, whereby the thickness of the compartments is tuned in the range 1–10 nm, are synthesized.
Sébastien, Peralta, Jean-Louis, Habib-Jiwan, Alain M, Jonas   +2 more
openaire   +2 more sources

Monocyte activation on polyelectrolyte multilayers

Journal of Biomaterials Science, Polymer Edition, 2005
The adherence and activation of primary human monocytes was investigated on a polyelectrolyte multilayer film containing hyaluronic acid (HA) and poly-L-lysine (PLL). The sequential layer-by-layer deposition of the multilayer film was characterized by surface plasmon resonance.
Jason J, Hwang, Sandra, Jelacic, Newton T, Samuel, Ronald V, Maier, Charles T, Campbell, David G, Castner, Allan S, Hoffman, Patrick S, Stayton   +7 more
openaire   +2 more sources

Formation and Stability of Multilayers of Polyelectrolytes

Langmuir, 1996
Sequential addition of anionic and cationic polyelectrolytes may lead to the formation of multilayers at a solid surface. The buildup of such multilayers is characterized by a stepwise increase of the adsorbed amount and layer thickness and by alternating highly positive and highly negative values for the ζ-potential.
Hoogeveen, N.G., Cohen Stuart, M.A., Fleer, G.J., Böhmer, M.R.   +3 more
openaire   +2 more sources

Loading of Curcumin in Polyelectrolyte Multilayers

Langmuir, 2010
Polyelectrolyte multilayer (PEM) thin films prepared using the layer-by-layer technique are proposed as a matrix for the immobilization of 1,7-bis-(4-hydroxy-3-methoxyphenyl)-1,6-heptadiene-2,5-dione (curcumin), a lipophilic model drug. The PEM assembly was based on the layer-by-layer deposition of cationic poly(diallyldimethyl-ammonium chloride ...
Paveenuch, Kittitheeranun, Neeracha, Sanchavanakit, Warayuth, Sajomsang, Stephan Thierry, Dubas   +3 more
openaire   +2 more sources

Polyelectrolyte Multilayers on Weak Polyelectrolyte Brushes

Macromolecular Rapid Communications, 2003
AbstractThe interaction of surface‐attached weak polyelectrolyte brushes, grown directly from the surface of a solid substrate by surface‐initiated polymerization, with weak polyelectrolyte molecules in solution is studied. In addition, the formation of PEL multilayers onto such brush substrates is investigated. A strong template effect is observed and
Zhang, Haining, Rühe, Jürgen
openaire   +2 more sources

Interaction and Adhesion Properties of Polyelectrolyte Multilayers

Langmuir, 2005
The growth, morphology, and interaction/adhesion properties of supported poly(sodium 4-styrenesulfonate)/poly(allylamine hydrochloride) (PSS/PAH) and DNA/PAH multilayers were investigated by means of surface plasmon resonance spectroscopy, atomic force microscope (AFM) imaging, and AFM-related force measurements.
Gong, H.E., Garcia Turiel, J., Vasilev, K., Vinogradova, O.I.   +3 more
openaire   +5 more sources

Salt Softening of Polyelectrolyte Multilayer Capsules

Langmuir, 2005
The changes in the morphology and the mechanical properties of hollow polyelectrolyte multilayer capsules made from poly(styrenesulfonate)/poly(allylamine hydrochloride) in response to added salt were investigated. We found that capsules shrink in response to salt exposure.
Heuvingh, J., Zappa, M., Fery, A.
openaire   +3 more sources

Retrospective on the Future of Polyelectrolyte Multilayers

Langmuir, 2009
The layer-by-layer, or multilayer, method of thin film growth has evolved into a widely-used enabling technology. Starting in the mid 1990's, an exponentially increasing number of publications on the topic, many appearing in this Journal, have shown how multilayers may be adapted to passive and active coatings, devices and architectures.
openaire   +2 more sources