title: Polyol synthesis of silver nanoparticles: mechanism of reduction by alditol bearing polysaccharides.
abstract: Alditol bearing chitosans have shown the ability to reduce silver ions in mild conditions and without addition of exogenous reducing agents. The ion reduction induces the formation of a lactone moiety on the polysaccharide (Fetizon reaction) without causing C-C bond cleavage on the polyol. The close and multivalent arrangement of the endogenous reducing agent (alditols) on the polysaccharide backbone resulted in the formation of silver nanoparticles (phi < 10 nm), which induced a considerable SERS effect and led to hydrogel formation.
authors.affiliation: Department of Life Sciences, University of Trieste, 34127 Trieste, Italy. idonati@units.it
authors.forename: Ivan
authors.initials: I
authors.lastname: Donati
authors.forename: Andrea
authors.initials: A
authors.lastname: Travan
authors.forename: Chiara
authors.initials: C
authors.lastname: Pelillo
authors.forename: Tommaso
authors.initials: T
authors.lastname: Scarpa
authors.forename: Anna
authors.initials: A
authors.lastname: Coslovi
authors.forename: Alois
authors.initials: A
authors.lastname: Bonifacio
authors.forename: Valter
authors.initials: V
authors.lastname: Sergo
authors.forename: Sergio
authors.initials: S
authors.lastname: Paoletti
mesh_terms: D053768:Metal Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry; D019163:Reducing Agents; D012834:Silver; D013402:Sugar Alcohols / Q000737:chemistry
chemical_list: D011108:Polymers; D011134:Polysaccharides; D019163:Reducing Agents; D013402:Sugar Alcohols; C024617:polyol; D012834:Silver