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Nanoparticles from single polyelectrolytes

Nanoparticles are of great interest due to their potential applications as building blocks for modern nanoelectronics or for catalysis. One of the most promising route to such particles, so-called "bottom-up" approach, have been applied by researchers from the Institute of Polymer Research Dresden. Using Atomic Force Microscopy they were successful to observe polymer molecules of various architecture and composition as individual entities. Applying special external stimuli they are able to deposit polymer molecules onto a solid support in desired conformation. Finally, functional materials could be selectively attached to active sites of molecules. Importantly, shape, size, and location of thus fabricated particles are predefined by the conformation of the polymer precursor whereas physical properties are controlled by the properties of deposited materials. As an example, Figure 1 shows linear (a) and star-shaped (b) molecules which can be used for fabrication of palladium nanowires (c) or semiconductive Prussian Blue nanoparticles (d) - important building blocks for future molecule-based electronics.

Institute of Polymer Research Dresden
Dept. Nanostructured Materials
Hohe Str. 6, 01069 Dresden

Prof. Dr. Manfred Stamm - stamm@ipfdd.de
Dr. Anton Kiriy - kiriy@ipfdd.de


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Office of Center of Competence "Ultrathin Functional Films"
at Fraunhofer IWS Dresden
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Mail: ralf.jaeckel@iws.fraunhofer.de
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