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Publication
American Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Paper
Conformation of amphiphilic 6-arm star block copolymers in solvent mixtures: Photophysical characterization
Abstract
The conformation of amphiphilic 6-arm star block copolymers, with pyrene-tagged polymethyl methacrylate (PMMA) as the hydrophobic inner block attached to a 6-arm initiator and poly(acrylic acid) (PAA) as the hydrophilic outer block, is studied. The conformation of micelles formed from star-like copolymers depends on the selective solvent and can be detected with pyrene probe fluorescence. Concentration dependence studies of polymer in a specific solution indicate the aggregation of star block copolymers and the shift of the polymer concentration at which the excimer intensity is minimized is detected.