Polymers are ubiquitous building blocks for hierarchically structured materials. We use co-assembly of supramolecular and ionic-neutral (co-)polymers as a tool to engineer complex functional and responsive superstructures. We also investigate how supramolecular polymers form; how they disintegrate; how we can tune their size, shape, flexibility, abundance; and how we can control self-organization of polymers into single chain polymeric nanoparticles (SCPNs), bundles and (hydro)gels.