Regensburg 2002 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 4: Poster: Dynamik in polymeren Systemen
CPP 4.6: Poster
Montag, 11. März 2002, 13:30–15:00, B
Fluorescence correlation spectroscopy investigations of water-soluble polymers — •Tune B. Bonne1, Ulrich Hahn2, Thomas Komenda3, Rainer Jordan3, Katharina Landfester4, and Christine M. Papadakis1 — 1Fakultät für Physik, Universität Leipzig, D-04103 Leipzig — 2Institut für Biochemie, Universität Leipzig — 3Fakultät für Chemie, TU München, D-85747 Garching — 4MPI-KG, D-14476 Golm
Fluorescence correlation spectroscopy is a method to study the self-diffusion of fluorescence-labeled molecules. With this method, the detection volume is very small (ca. 1 µm3) and the measurements are carried out on the basis of a single molecule in the detection volume.
We have studied aqueous solutions of water-soluble poly(methyloxazolin) (PMO) labeled with aminofluorescein as a function of concentration. In this way, the influence of polymer concentration on the diffusivity is studied on a microscopic scale. These results are compared to the diffusion of fluorescence-labeled latices in PMO solutions.