Herein, the unique nanostructures including helical ribbons, tubules, onion-like vesicles and multicompartmental micelles based on the self-assembly of amphiphilic diblock copolymers were fabricated by control of crystalline properties of semicrystalline hydrophobic block. Two types of fabrication methods including in-situ self-assembly and the emulsification-induced assembly were used to induce the self-aggregation of polymer amphiphiles. In general, control of the semicrystalline diblock copolymer are difficult due to the strong tendency to form fibrils and 2D sheets. Indeed, the fibrillar structure of polymer amphiphile was obtained using the in-situ self-assembly. On the other hand, emulsification-induced assembly generated the unique nanoarchitectures including helical ribbons, tubules, onion-like vesicular structures and multicompartmental micelles through the induction of chemical instability, at the interface between oil and water phase of emulsion droplet, caused by evaporation of organic solvent. The precise control of molecular arrangements within the one-dimensional aggregates is necessary to build the sophisticated nanostructures, brodending their applications. The crystallinity control of amphiphilic block copolymers at the molecular scale considerably affects the spatial organization of the nano-architectures at the nanoscale. Thus, various distinctive structures of crystalline block copolymer and its formation mechanism will be presented.

Control of the unique nanostructures formed by emulsification-induced assembly of semicrystalline polymer amphiphiles

251st National Meeting (2016)

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