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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.