Berlin 2012 – scientific programme

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O: Fachverband Oberflächenphysik

O 35: Poster Session II (Polymeric biomolecular films; Nanostructures; Electronic structure; Spin-orbit interaction; Phase transitions; Surface chemical reactions; Heterogeneous catalysis; Particles and clusters; Surface magnetism; Electron and spin dynamics; Surface dynamics; Methods; Electronic structure theory; Functional molecules)

O 35.128: Poster

Tuesday, March 27, 2012, 18:15–21:45, Poster B

Soft Landing of Macromolecules using Electrospray Ionization — •Richard Steinacher, Seung Cheol Oh, Julian Lloyd, Hartmut Schlichting, and Johannes V. Barth — Physik Department, E20, TU München, Germany

Recent developments in research towards positioning macromolecules on surfaces, relevant for organic electronics or materials, made it desirable to deposit and investigate species that can not be sublimated by thermal evaporation techniques. We present a set-up with several stages, where an ion beam of macromolecules is produced by an electrospray ionization source, focused by electrodynamic funnels, and guided by electrostatic lenses. Furthermore, a quadrupole is used, to mass-selectively seperate the constituents of the ion beam. The apparatus allows to bring the molecules into a clean UHV environment and deposit them on a substrate, for the production of films with high purity. Beyond the generation and the guidance techniques of the ion current, the set-up is compact and thus very versatile. This will enable the usage of one instrument with multiple devices, such as scanning probe microscopes or for the production of hybrid organic-semiconductor components.