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CPP: Chemische Physik und Polymerphysik

CPP 20: Dynamics II

CPP 20.1: Vortrag

Dienstag, 8. März 2005, 11:15–11:30, TU C230

Single molecule fluorescence experiments on homo polymers and block copolymers. — •Heiko Zettl, Ute Lippert, Wolfgang Häfner, Alexander Böker, and Georg Krausch — Physikalische Chemie II, Universität Bayreuth, 95440 Bayreuth

In recent years single molecule methods like fluorescence correlation spectroscopy and single molecule tracking became increasingly important for the study of the (bio) macromolecules. Here, we present single molecule experiments on dye labelled synthetic polymer chains in organic solvents and in thin polymer films. We aim at studying the dynamics of single polymer chains in complex polymeric environments. Fluorescence correlation spectroscopy was used to determine the hydrodynamic behaviour of single polymer chains in dilute and semi-dilute polymer solutions. To extent the experiments towards longer time scales, single molecule tracking was used to follow the motion of single chains in a microphase separated polymer matrix.