Journal
ELECTROANALYSIS
Volume 21, Issue 15, Pages 1763-1766Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.200904658
Keywords
Chemical modification of polysaccharides; Os(VI)L-polysaccharide adducts; Pyrolytic graphite electrodes; Cyclic voltammetry; Square wave voltammetry; Determination of polysaccharides; Glycoproteins
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We show that polysaccharides (PSs, such as dextran and mannan) can be chemically modified by Os(VI) complexes, yielding electroactive adducts. Os(VI) complexes with different ligands (e.g., temed and 2,2'-bipyridine) produced at pyrolytic graphite electrodes redox couples at different potentials suitable for multicolor labeling of PSs and for studies of ligand exchange kinetics. PS-Os(VI)L adducts can be determined not only in their purified forms but also in the reaction mixtures.
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