Formation of multilayer polyelectrolyte complexes by using block ionomer micelles as nucleating particles

Article Abstract:

The complexes formed between polystyrene-block-poly(N-ethyl-4-vinylpyridinium bromide) (PS-b-PEVP) and poly(sodium methacrylate) are studied. It is suggested that cooperative electrostatic binding of poly (methacrylic acid) (PMAA) polyanions with the cationic PS-b-PEVP micelles in dilute aqueous solutions resulted in either precipitation of insoluble interpolyelectrolyte complexes (IPEC) or formation of stable dispersions of soluble IPEC.

Analysis, Micelles, Ligands, Ligands (Chemistry)

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Fluorescence anisotropy study of aqueous dispersions of block ionomer complexes

Article Abstract:

The dynamics and packing of aliphatic groups of the surfactant by using the quenching-resolved fluorescence anisotropy technique with 1,6-diphenyl1-1,3,5-hexatriene as a probe is examined. The results provide implications for potential use of the Block ionomer complexes in pharmaceutics and other fields.

Anisotropy, Aqueous solution reactions, Ionomers

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Intramolecular disulfide bridges as a phototrigger to monitor the dynamics of small cyclic peptides

Article Abstract:

Two photocleavable disulfide-bridged tetrapeptides [cyclo(Boc-Cys-Pro-Aib-Cys-OMe) and cyclo(Boc-Cys-Pro-Phe-Cys-OMe)] which provide insight into cyclic peptide dynamics are reported.

Observations, Molecular dynamics

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