title: Thiolated hemicellulose as a versatile platform for one-pot click-type hydrogel synthesis.
abstract: A one-pot synthetic methodology for the thiolation of O-acetyl-galactoglucomannan (AcGGM) was developed to merge hemicellulose chemistry with "click" chemistry. This was realized by the AcGGM-mediated nucleophilic ring-opening of γ-thiobutyrolactone via the activation of the polysaccharide pendant hydroxyl groups. The incorporation of thiol functionalities onto the hemicellulose backbone was visualized by (1)H and (13)C NMR spectroscopy and was assessed by an Ellman's reagent assay of the thiol groups. The versatility of the thiolated AcGGM was elaborated and demonstrated by conducting several postmodification reactions together with hydrogel formation utilizing thiol-ene and thiol-Michael addition "click" reactions. The one-pot synthesis of thiolated AcGGM is a straightforward approach that can expand the applications of hemicelluloses derived from biomass by employing "click" chemistry.
authors.affiliation: Fiber and Polymer Technology, Royal Institute of Technology (KTH) , Teknikringen 56, SE-100 44 Stockholm, Sweden.
authors.forename: Laleh
authors.initials: L
authors.lastname: Maleki
authors.forename: Ulrica
authors.initials: U
authors.lastname: Edlund
authors.forename: Ann-Christine
authors.initials: AC
authors.lastname: Albertsson
mesh_terms: D057930:Click Chemistry / Q000379:methods*; D020100:Hydrogels / Q000138:chemical synthesis*; D011134:Polysaccharides / Q000138:chemical synthesis*; D013438:Sulfhydryl Compounds / Q000138:chemical synthesis*
chemical_list: D020100:Hydrogels; D011134:Polysaccharides; D013438:Sulfhydryl Compounds; C007916:hemicellulose