Gold Nanoparticles Stabilized by Glycodendrimers: Synthesis and Application to the Catalytic Reduction of 4-Nitrophenol

作者：Gatard Sylvain^*; Salmon Lionel; Deraedt Christophe; Ruiz Jaime; Astruc Didier; Bouquillon Sandrine

来源：European Journal of Inorganic Chemistry, 2014, 2014(16): 2671-2677.

DOI：10.1002/ejic.201402067

• Nanoparticles
• Dendrimers
• Gold
• Reduction

Air-stable gold nanoparticles stabilized by glycodendrimers (AuDSNs) in water were prepared in the presence of a reducing agent, NaBH4. A UV/Vis spectroscopy study demonstrates that no spontaneous reduction of Au3+ ions occurs in the presence of glycodendrimers. The AuDSNs were characterized by UV/Vis spectroscopy and transmission electron microscopy (TEM). TEM images show that the AuDSNs were very small (average diameter: 2.6 nm). The catalytic activity of these AuDSNs was evaluated for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by NaBH4 monitored by UV/Vis spectroscopy. Studies of the reduction reaction reveal that the rate constant depends on the concentration of 4-NP.

• 出版日期2014-6