Gold nanoparticles stabilized by glycodendrimers: Synthesis and application to the catalytic reduction of 4-nitrophenol

S. Gatard (1, 2) , L. Salmon (3) , C. Deraedt (1) , J. Ruiz (1) , Dominique Astruc (1) , S. Bouquillon (2)

1 ISM - Institut des Sciences Moléculaires
2 ICMR - Institut de Chimie Moléculaire de Reims - UMR 7312
3 LCC - Laboratoire de chimie de coordination

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.

Domaines: Chimie de coordination

S. Gatard, L. Salmon, C. Deraedt, J. Ruiz, Dominique Astruc, et al.. Gold nanoparticles stabilized by glycodendrimers: Synthesis and application to the catalytic reduction of 4-nitrophenol. European Journal of Inorganic Chemistry, 2014, 2014 (16), pp.2671-2677. ⟨10.1002/ejic.201402067⟩. ⟨hal-02007964⟩