Reversible and Irreversible Binding of Nanoparticles to Polymeric Surfaces

Abstract

Reversible and irreversible binding of CdSe‐nanoparticles and nanorods to polymeric surfaces via a strong, multiple hydrogen bond (= Hamilton‐receptor/barbituric acid) is described. Based on ROMP‐copolymers, the supramolecular interaction on a thin polymer film is controlled by living polymerization methods, attaching the Hamilton‐receptor in various architectures, and concentrations. Strong binding is observed with CdSe‐nanoparticles and CdSe‐nanorods, whose surfaces are equipped with matching barbituric acid‐moieties. Addition of polar solvents, able to break the hydrogen bonds leads to the detachment of the nanoparticles from the polymeric film. Irreversible binding is observed if an azide/alkine‐“click”‐reaction is conducted after supramolecular recognition of the nanoparticles on the polymeric surface. Thus reversible or irreversible attachment of the nanosized objects can be achieved.