Effects of charge density and counterions on the assembly of polyelectrolyte multilayers
Article Abstract:
The kinetics of the electrostatic layer-by-layer adsorption of a weakly charged polycation, poly(allylamine hydrochloride), PAH, and a polyanion containing an azobenzene chromophere, P-Azo, are studied using UV-vis spectroscopy and ellipsometry. It is found that in some PAH/P-Azo films, a significantly large thickness was achieved in less than 5 s, which is more than 2 orders of magnitude faster than what is usually observed.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Surface-mediated photoalignment of discotic liquid crystals on azobenzene polymer films
Article Abstract:
A simple strategy for the formation of photoaligned and micropatterned discotic liquid crystal (DLC) film on the surface of photoirradiated azobenzene-containing polymer thin film is described. The key material for the surface-mediated photoalignment of DLC was poly[4-(4-cyanophenylazo)phenyl methacrylate] (pMAzCN).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Effects of film thickness on the validity of the Sauerbrey equation for hydrated polyelectrolyte films
Article Abstract:
The frequency and energy dissipation change of a quartz crystal microbalance during moisture absorption was measured for films with thickness ranging from 3 to 205 nm. It was observed that the equilibrium-swelling ratio was independent of the film thickness for all films examined.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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