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Updated: Jan 26, 2026

A Technique to Functionalize and Self-assemble Macroscopic Nanoparticle-ligand Monolayer Films onto Template-free Substrates
Published on: May 9, 2014
Polymorphism of dioctyl-terthiophene within thin films: The role of the first monolayer
Christoph Lercher1,2, Christian Röthel1, Otello Maria Roscioni3,4
1Institut für Festkörperphysik, Technische Universität Graz, Petersgasse 16, 8010 Graz, Austria.
Abstract:
The origins of specific polymorphic phases within thin films are still not well understood. The polymorphism of the molecule dioctyl-terthiophene is investigated during the presence of a silicon-oxide surface during the crystallisation process. It is found that a monolayer of molecules forms two-dimensional crystals on the surface. In the case of thicker films crystalline islands are formed, a comparison of the three polymorphic phases observed within thin films and the thermodynamically more stable single crystal phases reveals distinct differences which can be related to an adaption of the molecular packing with the flat surface of the substrate.
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