Ion distribution in polyelectrolyte multilayers with standing-wave X-ray fluorescence

Article Abstract:

The polyelectrolyte multilayer films created by alternating adsorption of polyanions and polycations from aqueous solution were subjected to standing-wave X-ray fluorescence to calculate the ion concentration and ion profile. The findings suggested that the nature of charge of the outermost layer and the washing procedure used in the end decide the concentration and profile of the ion.

Report

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Hollow polyelectrolyte multilayer tubes: Mechanical properties and shape changes

Article Abstract:

A novel route is described for producing hollow cylindrical tubes from polyelectrolyte multilayers by using the layer-by-layer (LbL) techniques on commercial glass fibers. The dependency of tube stiffness on diameter and wall material is controlled by this approach and the deformity of the tubes can be varied over a broad range and adjusted for the particular needs.

Analysis, Observations, Atomic force microscopy, Chemical vapor deposition, Chemical vapour deposition

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Fabrication and characterization of self-assembled nanoparticles/polyelectrolyte multilayer films

Article Abstract:

Multilayer films containing gold nanoparticles, stabilized with a carboxylic acid terminated thiol and the polyelectrolyte PDDA are synthesized on APTES-functionalized silicon substrates. It is evident from the Kelvin probe measurements that the sign of the surface charge oscillates, as expected if layer formation is being driven by electrostatic interactions.

United States, Particles (Nuclear physics), Subatomic particles

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