| Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2018) | |
| Thin Films | Tuesday Sessions |
| Session TF-TuM |
| Session: | Innovations in the Development of Multifunctional Thin Films |
| Presenter: | Stefan Seeger, University of Zurich, Switzerland |
| Authors: | S. Seeger, University of Zurich, Switzerland G. Artus, University of Zurich, Switzerland N. Saddiqi, University of Zurich, Switzerland |
| Correspondent: | Click to Email |
The synthesis of nano and microstructures is an emerging field in chemistry and materials science. They can be made from a large variety of materials, for example metals, semi-metals, or polymeric substances. Usually, these particles exhibit a simple shape.
Some years ago, we have presented the synthesis of silicone nano filaments in particular for surface coatings. Now, we have shown a mechanism, called Droplet assisted Growth and Shaping (DAGS) explaining how these one-dimensional growths can be explained. Based on this synthesis scheme we are able to synthesize silicone nanoparticles of different shapes depending on the reaction conditions at room temperature from gas phase and liquid phase. Some of these structures exhibit a shape complexity which goes clearly beyond wires and filaments. Very recently, we could show that the mechanism of this synthesis is applicable not only to silicone structures but also to other chemical compounds. For example we have synthesized Germanium oxide and Aluminumoxide nanostructures. For these structures we have used Germaniumchloride and Tributyl-Aluminum. The procedure for all of them is identical, does not require high temperature, pressure or other cost invcreasing conditions.The shape of the structures depend on the grade of humidity in the gas phase during the reaction.
In this presentation, we will give an overview about the synthesis and process reaction conditions allowing the directed growth of of nano and microstructures of complex shape.
References
G. R. J. Artus, S. Jung, J. Zimmermann, H. P. Gautschi, K. Marquardt, S. Seeger, Adv. Mater. 2006, 18, 2758
Stojanovic, S. Olveira, M. Fischer, S. Seeger, Chem. Mater. 2013, 25, 2787
G Artus, S Olveira, D Patra, S Seeger, Macromol. Rapid Comm. 2017, 38, 1600558