This book reports the preparation and characterization of new rod-coil amphiphiles functionalized with oligo- and polysaccharides through Huisgen 1,3-dipolar cycloaddition reactions between species functionalized by an azide group on one side and an terminal alkyne on the other catalyzed by copper. The amphiphiles were synthesized and characterized based on different hydrophobic parts conjugated with the polymer poly(ethylene oxide) PEO with a hydrophilic spacer arm and the oligo- and polyssaccharides 2-propargyl-2-acetamido- 2-deoxy-ß-D-glucopyranose (GlcNAc) and propargyl ß-D-galactopyranosyl-(1-4)-ß-D-glucopyranose (Lac). The amphiphiles synthesized were characterized in terms of their chemical structure and composition through nuclear magnetic resonance (NMR),mass spectroscopy (MALDI-TOF-MS and ESI-MS)and high resolution mass spectroscopy (HRMS). After the dissolution in water, the amphiphiles self-associate in highly regular micelles with an average diameter of 2RH~10nm. Dynamic light scattering (DLS), transmission electron microscopy (TEM) and small angle x-ray scattering (SAXS) were used in order to investigate the structure and dynamics of these saccharide amphiphiles.
Tags: Chemie, Physikalische Chemie
Taschenbuch - 9783848425648 Verlag: LAP Lambert Academic Publishing Ersterscheinung: April 2012 ISBN-13: 9783848425648 Größe: 220 mm x 150 mm x 6 mm Gewicht: 165 Gramm 100 Seiten Versandfertig in 3-5 Tagen.