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Synfacts 2011(11): 1249-1249  
DOI: 10.1055/s-0031-1289248
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Silane Oxidation Catalyzed by Carbon Nanotube-Gold Nanohybrids

Contributor(s):Yasuhiro Uozumi, Yoichi M. A. Yamada, Heeyoel Baek
J. John, E. Gravel, A. Hagège, H. Li, T. Gacoin, E. Doris*
Xiamen University, P. R. of China; École Polytechnique, Palaiseau, CEA, iBiTecS, Gif-sur-Yvette, CEA, iBEB, Bagnols-sur-Cèze and CEA, iBEB, Saint Paul-les-Durance, France
Catalytic Oxidation of Silanes by Carbon Nanotube-Gold Nanohybrids
Angew. Chem. Int. Ed.  2011,  50:  7533-7536  
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Publication History

Publication Date:
19 October 2011 (online)

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Key words

carbon nanotubes - oxidation - heterogeneous catalysis - layer-by-layer

Significance

The gold nanohybrid on multiwalled carbon nanotubes 1 (AuCNT nanohybrids) was prepared by layer-by-layer (LBL) assembly of amphiphilic nitrilotriacetic acid diyne lipids (DANTA), cationic poly(diallyldimethylammonium chloride) (PDA-DMAC), and colloidal nanoparticles (AuNPs). The AuCNT-catalyzed aerobic oxidation of silanes (2a-j) was carried out in THF to give the corresponding silanols (3a-j) in 93-99% yields.

Comment

The hydrophobic portion of DANTA was adsorbed on the nanotubes and photopolymerized by UV irradiation at 254 nm. Carbon ­nanotube-gold nanohybrid 1 was characterized by TEM, GC-MS, ICP-MS, and XPS analyses. The catalyst was readily recovered by centrifugation and reused five times without significant loss of catalytic activity.

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