14.12.2016

Dr. Martin Müller (Department Polyelectrolytes and Dispersions, 
Leibniz Institute of Polymer Research Dresden, Dresden):
Polyelectrolyte complex layers: Deposition, structure and application aspects

Abstract:

Polyelectrolyte complex layers as functional biorelated coatings are outlined
in this talk. At first an example for the adsorption of pure polyelectrolytes
at an oppositely charged model substrate is given aiming at basic modalities
and limits of the polyelectrolyte deposition process. Secondly, polyelectrolyte
multilayers (PEM) fabricated by the consecutive adsorption of polycations and
polyanions well known as the layer-by-layer (LbL) concept introduced by Decher
are described by both a general view and a subjective view based on results of
FTIR spectroscopy and AFM. 

Finally, novel adhesive polyelectrolyte complex (PEC) nanoparticle (NP)
coatings at model and material substrates are introduced, which are prepared by
mixing of polycation and polyanion solutions and subsequent deposition of the
formed dispersion. For PEM and PEC NP coatings application aspects are outlined
with respect to protein active/passive surfaces and to drug delivery for bone
healing.