| 초록 |
Amphiphilic block copolymers dispersed in selective solvents are known to self-assemble into various aggregates such as spherical, cylindrical micelles and bilayer vesicles. Block copolymers typically possess thousand repeat units, leading to kinetically stable or trapped assemblies due to the lack of molecular chain exchange between aggregates in solution; thus, aggregated morphologies are highly path dependent. Here, we demonstrate new self-assembled morphologies based on charged block copolymer micelle complexes with pH-tunable electrostatic interactions between two oppositely charged corona blocks in aqueous media. The combination of preformed micellization of each BCM with the dissociation control of the corona blocks provides distinct assembly pathways. The mixing of oppositely charged BCMs reveals the effects of both corona complexation and the manipulation of interfacial curvature between core and corona within a micelle, resulting in unique complex morphologies. |
