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Journal of Nanomaterials
Volume 2009 (2009), Article ID 613813, 14 pages
http://dx.doi.org/10.1155/2009/613813
Research Article

Reversible and Irreversible Binding of Nanoparticles to Polymeric Surfaces

1Institute of Macromoleculare Chemistry, Martin-Luther-Universität Halle-Wittenberg, Heinrich-Damerowstrasse 4/TGZ III, 06120 Halle, Germany
2Institut für Materialchemie 165, Technische Universität Wien, Getreidemarkt 9/165, 1080 Wien, Austria
3Institut für Chemische Technologien und Analytik 164, Technische Universität Wien, Getreidemarkt 9/164, 1080 Wien, Austria

Received 15 October 2008; Accepted 24 March 2009

Academic Editor: Michael Wong

Copyright © 2009 Wolfgang H. Binder et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.