Regensburg 2010 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 40: Nanoparticles and Composite Materials I
CPP 40.3: Vortrag
Donnerstag, 25. März 2010, 10:00–10:15, H48
Directed Self-Assembly of Nanoporous Metallic- and Bimetallic Nanoparticle Thin Films — •Torsten Pietsch1, Nabil Gindy2, and Amir Fahmi2 — 1Fachbereich Physik, Universität Konstanz, Universitätstraße 10, 78464 Konstanz, Germany — 2Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
Nanoporous thin films attracted considerable interest due to potential applications in optical coatings, catalysis, sensors as well as electronic devices. Recently, such films were prepared by post deposition treatments. The present study is focused on the fabrication of nanoporous thin films via directed self-assembly of hybrid materials.[1] Due to the nature of this process no additional treatments are necessary to develop the pores.[2] Hierarchical nanoporous structures are fabricated directly via deposition of polymer templated Au-nanoparticles onto hydrophilic substrates.[3] These films exhibit two different pore diameters and a total pore density of more than 1010 holes per cm2. Control over the pore size is achieved by changing the molecular weight of the PS-b-P4VP diblock copolymer. Moreover, the porous morphology is used as a template to fabricate bimetallic nanostructured thin films. Such well-defined nanostructures, not only exhibit unique physical properties but also provide control over the hydrophobicity of the coated surfaces.
[1] Pietsch T et al., Macromol. Chem. and Phys. 210 (2009) 864
[2] Pietsch T et al.; Soft Matter 5 (2009) 2188
[3] Fahmi A et al.; Macromol. Rap. Comm. 38 (2007) 2300