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Original Articles

Synthesis of Monodisperse Gold Nanoparticles Stabilized by Gemini Surfactant in Reverse Micelles

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Pages 473-476 | Received 25 Nov 2004, Accepted 04 Dec 2004, Published online: 21 Aug 2006
 

Abstract

Gold nanoparticles were prepared by the reduction of HAuCl4 using NaBH4 as reducing agent in a water‐in‐oil reverse micelles system, in which gemini surfactant 2‐hydroxy‐1, 3‐bis(octadecyldimethylammonium) propane dibromide (18‐3(OH)‐18) was used as stabilizer. The results of TEM and AFM show that the gold nanoparticles have a narrow size distribution. The UV‐vis absorption spectra reveal that the gemini surfactant 18-3(OH)-18 can stabilize the gold nanoparticles for at least two months.

Acknowledgments

This work was supported by the National Natural Science Foundation of China (20025618, 20236010) and Shanghai Municipal Education Commission of China.

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