Polymer concentration profile near a liquid-solid interface: evanescent wave ellipsometry study

Polymer Concentration Profile near a Liquid-Solid Interface: Evanescent Wave Ellipsometry Study

The phase retardation angle, ~~. as a function of the incident angle was measured to study adsorption and depletion of polymers near a solid substrate from a solution by use of an evanescent wave ellipsometry technique. A lightly sulfonated ionomer dissolved in a polar solvent displayed an appreciable interfacial adsorption layer, while the nonionic precursor in ethyl acetate exhibits a deplete...

Wall-induced orientational order of a liquid crystal in the isotropic phase - an evanescent-wave-ellipsometry study.

Polymer lateral diffusion at the solid-liquid interface.

Measurements are presented of how polymer surface diffusion at the solid-liquid interface is controlled by surface coverage. The method of measurement was fluorescence correlation spectroscopy (FCS), and the system was poly(ethylene oxide) (PEG) adsorbed onto methyl-terminated self-assembled monolayers in buffered aqueous solution. The translational diffusion coefficient at first increased with...

Concentration-dependent rhombitrihexagonal tiling patterns at the liquid/solid interface.

We report STM investigations on a linear oligophenyleneethylene (OPE)-based self-assembling Pd(ii) complex 1 that forms highly-ordered concentration dependent patterns on HOPG. At high concentration, 2D lamellar structures are observed whereas the dilution of the system below a critical concentration leads to the formation of visually attractive rhombitrihexagonal Archimedean tiling arrangement...

Liquid-solid interface inertia