Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (18): 1813-1820. Previous Articles     Next Articles

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  1. (1扬州大学化学化工学院 扬州 225002)
    (2山东大学胶体与界面化学教育部重点实验室 济南 250100)
  • 投稿日期:2010-01-01 修回日期:2010-05-10 发布日期:2010-05-27
  • 通讯作者: 沈明
  • 基金资助:


In Situ Reducing Synthesis of p-Dodecyloxybenzenmethanamine- protected Hydrophobic Gold Nanoparticles under Microwave Irradiation

Han Ying*,1 Li Hengheng1 Shen Ming*,1 Li Liang1 Xu Guiying2   

  1. (1 College of Chemistry & Chemical Enginerring, Yangzhou University, Yangzhou 225002)
    (2 Education Ministry s Key Laboratory of Colloid and Surface Chemistry, Shandong University, Jinan 250100)
  • Received:2010-01-01 Revised:2010-05-10 Published:2010-05-27
  • Contact: Ming Shen

The hydrophobic gold nanoparticles were fabricated through n-butanol reduction in situ under microwave irradiation by using p-dodecyloxybenzenmethanamine (C12OBA)/n-butanol/n-heptane/HAuCl4/ NaOH(aq.) W/O microemulsion as a microreactor. The C12OBA-stabilized gold nanoparticles were characterized by UV-vis, TEM, XRD, FT-IR and CA (contact angle), respectively. The results showed that C12OBA, a novel surfactant, could not only take part in the formation of a stable W/O microemulsion, but also be used as a good protecting reagent for gold nanoparticles. The increase of alkalinity within the inner-core of microemulsion enhanced the reducing ability of n-butanol located in the membrane phase. As the amount of HAuCl4 was fixed, the increase of molar ratios of C12OBA/gold was beneficial to obtain hydrophobic gold nanoparticles with small-size and higher monodispersity; while the increase of polarity of reaction system led to the increase of size and decline of monodispersity of particles. And thus by this method, the hydrophobic gold nanoparticles with about 5 nm-diameter and high monodispersity could be easily and quickly synthesized.

Key words: p-dodecyloxybenzenmethanamine, hydrophobic gold nanoparticle, W/O microemulsion, in situ reduction, microwave irradiation