Polyol Synthesis of Silver Nanoparticles: Mechanism of Reduction by Alditol Bearing Polysaccharides

详细信息    查看全文

• 作者：Ivan Donati ; Andrea Travan ; Chiara Pelillo ; Tommaso Scarpa ; Anna Coslovi ; Alois Bonifacio ; Valter Sergo ; Sergio Paoletti
• 刊名：Biomacromolecules
• 出版年：2009
• 出版时间：February 9, 2009
• 年：2009
• 卷：10
• 期：2
• 页码：210-213
• 全文大小：201K
• 年卷期：v.10,no.2(February 9, 2009)
• ISSN：1526-4602

文摘

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 ( < 10 nm), which induced a considerable SERS effect and led to hydrogel formation.