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Hydrodynamic properties of cyclodextrin molecules in dilute solutions |
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| Authors: | Georges M Pavlov Evguenia V Korneeva Natalia A Smolina Ulrich S Schubert |
| Institution: | (1) Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;(2) Institute of Physics, St Petersburg State University, Ulianovskaya Str. 1, 198504 St Petersburg, Russia;(3) Institute of High-Molecular Compounds of Russian Academy of Science, St Petersburg, Russia;(4) Faculty of Biological and Soil Sciences, St Petersburg State University, St Petersburg, Russia;(5) Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstr. 10, 07743 Jena, Germany |
| Abstract: | Three well-known representatives of the cyclodextrin family were completely characterized by molecular hydrodynamics methods in three different solvents. For the first time the possibility of an estimation of velocity sedimentation coefficients s between 0.15 and 0.5 S by the numerical solution of the Lamm equation is shown. Comparison of the experimental hydrodynamic characteristics of the cyclodextrins with theoretical calculations for toroidal molecules allows an estimation of the thickness of the solvent layers on the surface of cyclodextrin molecules. |
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