Cylindrical Block Co-Micelles with Spatially Selective Functionalization by Nanoparticles

摘要

Amphiphilic block copolymers with two immiscible segments can self-assemble in selective solvents to form well-defined micellar aggregates, such as spheres, cylinders, and more complex architectures. Interest in these types of supramolecular materials is largely stimulated by their potential applications in nanotech-nology and medicine. Cylindrical block copolymer micelles with an inherently high aspect ratio are of particular interest. Examples of their utility include applications as additives for the enhancement of the toughness of epoxy resin, as templates for the mineralization of hydroxyapatite, as materials for flow-intensive drug delivery, and as nanoscopic etch resists. As the aspect ratio of the cylindrical micelles is a key factor that influences their properties, the ability to control the length of cylindrical micelles represents an important challenge. The ability to create more complex cylindrical micellar architectures with selective functionalization is also of intense interest.