1. Specific and non-specific ion-polysaccharide interactions
- Author
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Amelia Gamini, Vittorio Crescenzi, Franco Delben, Attilio Cesàro, Sergio Paoletti, Roberta Rizzo, Gianfranco Liut, Cesaro, Attilio, Crescenzi, Vittorio, Delben, Franco, Gamini, Amelia, G., Liut, Paoletti, Sergio, and Rizzo, Roberto
- Subjects
chemistry.chemical_classification ,Aqueous solution ,Thermodynamic state ,Stereochemistry ,Ionic bonding ,Chromophore ,Condensed Matter Physics ,Polyelectrolyte ,Ion ,Divalent ,chemistry ,Computational chemistry ,Physical and Theoretical Chemistry ,Chirality (chemistry) ,Instrumentation - Abstract
The interaction of ions with certain carbohydrate ligands in aqueous solution is examined. Simple systems are analysed to understand the role of conformational transitions and the possible specificity often advanced as an explanation for the complexity of the binding. Evidence of an extrinsic chirality of bound ionic chromophores is presented for nearly enantiomeric complexes of alginate and pectins with Pb2+ ions. Data on the thermodynamics of interaction between divalent cations and typical ionic polysaccharides are presented with a view to offering an interpretation based upon current theoretical models of polyelectrolyte solutions. In particular, reference is made to the linear correlation between thermodynamic state functions.
- Published
- 1992