A new microemulsion method using tetraoctylammonium bromide as a cationic surfactant has been formulated to fabricate thiol-functionalized gold nanoparticles. The nanoparticles were compared with those synthesized by the multistep Brust two-phase method. The nanoparticle sizes and size distributions fabricated by the two methods were characterized by UV–vis absorbance spectroscopy and transmittance electron microscopy. The simple microemulsion method produced the same results as those obtained by the Brust method.

中文翻译：

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一种微乳液法制备巯基官能化的金纳米粒子

已经制定了使用四辛基溴化铵作为阳离子表面活性剂的新微乳液方法，以制备硫醇官能化的金纳米颗粒。将纳米颗粒与通过多步Brust两相法合成的纳米颗粒进行比较。通过紫外可见吸收光谱和透射电子显微镜对两种方法制备的纳米颗粒的尺寸和大小分布进行了表征。简单的微乳液方法产生的结果与通过Brust方法获得的结果相同。