Regensburg 2004 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 16: POSTER: Computational Physics, Complex Systems
CPP 16.19: Poster
Dienstag, 9. März 2004, 17:00–19:00, B
Physical characterization of iodine-labelled Calixarene self-assembled monolayers — •Martin Michelswirth1, Peter Siffalovic1, Peter Bartz1, Björn Decker2, Ceno Agena2, Christian Schäfer2, Stephan Molter3, Robert Ros3, Markus Bach4, Manfred Neumann4, Dario Anselmetti3, Jochen Mattay2, Ulrich Heinzmann1, and Markus Drescher1 — 1Molekül- und Oberflächenphysik, Fakultät für Physik, Universität Bielefeld — 2Organische Chemie I, Fakultät für Chemie, Universität Bielefeld — 3Experimentelle Biophysik, Fakultät für Physik, Universität Bielefeld — 4Elektronenspektroskopie, Fachbereich Physik, Universität Osnabrück
The Calixarenes’ chemical variability and their flexible cage-type structure make them versatile model hosts for studies of molecular recognition. Dynamical information about the guest-host interaction could be derived from time-resolved ESCA (Electron Spectroscopy for Chemical Analysis) which would provide temporal as well as local information about the chemical environment if one labels the host (or guest) molecule with an atomic marker. To this end, we labelled Calixarenes with iodine markers and attached them to gold substrates with dialkyl-sulfide linkers. The film stechiometry, thickness and density were studied with XPS, AFM and imaging ellipsometry, respectively. The results support the expected elemental composition and a film thickness compatible with the molecular orientation perpendicular to the surface.