Abstract: A graft copolymer and a method of delivering an active agent to a subject are provided. The graft copolymer includes a polymer backbone, a hydrophilic segment grafted to the polymer backbone, a pH-responsive segment grafted to the polymer backbone, and an endosomal disruption segment grafted to the polymer backbone. The method of delivering an active agent to a subject includes encapsulating the active agent with the graft copolymer and administering the encapsulated active agent to the subject.

Abstract: A diblock copolymer, polymer vesicle, and method of forming a polymer vesicle are provided. The diblock polymer includes a hydrophilic first block and a second block including amine containing monomers and hydrophobic monomers. The polymer vesicle includes a diblock copolymer with a hydrophilic first block and a second block including amine containing monomers and hydrophobic monomers, and at least one active agent loaded in the polymer vesicle. The second block forms an inner hydrophobic domain of a vesicle membrane and the hydrophilic block forms a corona facing the exterior and aqueous interior of the vesicle membrane, the corona providing an outer shell that stabilizes the vesicle in aqueous media.