Reversible activation of diblock copolymer monolayers at the interface by pH modulation, 1: Lateral chain density and conformation

Article Abstract:

The chemically regulated surfaces that allow for reversible control of the interactions between biological matter and planar substrates are designed. Ellipsometry and dstudies of the transferred films have confirmed that the film thickness can be systematically regulated by the later chain densities and the transferred copolymer films have remained stable in water for about a week, suggesting that they are promising materials for the creation of pH-controlled solid substrates for the support of biological matter such as proteins and cells.

Reflectance

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Reversible activation of diblock copolymer monolayers at the interface by pH modulation, 2: Membrane interactions at the solid/liquid interface

Article Abstract:

A monolayer of the pH-responsive poly[2-(dimethylamino)ethyl methacrylate-block-methyl methacrylate] diblock copolymer [PDMAEMA-PMMA] is transferred from the air/water interface to a silicon substrate for evaluation as a tunable interlayer between biological material and solid substrates. The results have demonstrated the potential of these polymer films for the regulation of cell-substrate interaction potentials through external stimuli.

Hydrogen-ion concentration, Volumetric analysis, pH measurement, Chemical properties

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Probing the micellization kinetics of pyrene end-labeled diblock copolymer via a combination of stopped-flow light-scattering and fluorescence techniques

Article Abstract:

The pH-induced micellization kinetics of newly synthesized pyrene end-labeled double hydrophilic block copolymer was carried out by using combination of stopped-flow light-scattering and fluorescence techniques. The structural rearrangement of chains within the micelle cores was observed during relaxation from quasi-equilibrium micelles to final equilibrium micelles.

Science & research, Research, Micelles, Dynamics, Dynamics (Mechanics), Mechanical properties, Hydrophobic effect

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