X-ray microscopy studies of protein adsorption on a phase segregated polystyrene/polymethylmethacrylate surface. 2: effect of pH on site preference

Article Abstract:

The adsorption of human serum albumin onto polystyrene (PS) and polymethylmethacrylate (PMMA) blend surface from five different pH solutions is studied using x-ray photoemission electron microscopy. Albumin exhibits completely extended (pH 2.0) and a completely contracted (pH 10.0) structures, but at the intermediate stages (pH 4.0) albumin opens some hydrophilic sites and shows preferential adsorption for hydrophilic PMMA.

Usage, Spectrum analysis, Protein research, Structure, X-ray spectrometry

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x(super 2) grating in Ru derivative chromophores incorporated within the PMMA polymer matrices

Article Abstract:

A study is conducted to explore x(super 2) grating and associated second-order optical effects in Ru-alkynyl complexes incorporated within the polymer polymethyl methacrylate matrices. The investigated composite possess metastable trapping levels originating both from the d states of Ru and due to the effective charge transfer due to the presence of pi-conjugated states.

Polymers, Chromophores

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