'Green' synthesis and optical properties of silver-chitosan complexes and nanocomposites

作者：Bozanic Dusan K; Trandafilovic Lidija V; Luyt Adriaan S; Djokovic Vladimir^*

来源：Reactive and Functional Polymers, 2010, 70(11): 869-873.

DOI：10.1016/j.reactfunctpolym.2010.08.001

• Chitosan
• Silver
• Nanoparticle
• Nanocomposite
• Complex

Silver nanoparticles were synthesized in a chitosan biopolymer by an in situ 'green' chemical procedure. using D-glucose as the reducing agent. The reaction intermediates (silver-chitosan complexes) as well as the obtained nanocomposites were investigated using transmission electron microscopy, UV-vis, FTIR and photoluminescence spectroscopy. The theoretical analysis of the UV-vis absorption of the Ag-chitosan complexes suggested that the significant contribution to the complex spectrum arises from clusters of silver containing 4-9 atoms. The absorption spectrum of the nanocomposite exhibited a strong surface plasmon resonance band at 406 nm. The photoluminescence behavior of the pure chitosan, the silver-chitosan complexes and the nanocomposites were discussed in terms of morphology and silver weight content.

• 出版日期2010-11