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通过硼氢化钠NaBH4 还原金氯酸HAuCl4 ,成功地制作了羧酸酯表面修饰的金纳米粒子 ,并用丁二酸硫醇作为硫醇配体稳定剂 ,抑制了纳米粒子的进一步生长 .这种方法有效地把粒径控制在纳米范围内并且粒径分布范围小 ,只需通过一次反应就可大量地制得 1～ 2 0nm、具有量子效应的纳米粒子 .用X射线衍射仪、透射式电子显微镜和隧道扫描显微镜对这些粒子进行了检测 ,证实大量的粒子都是面心立方结构 ,硫醇配体在金粒子表面由化学吸附形成一层单分子膜 .隧道扫描显微镜观察到了这一层单分子膜
The sodium carboxylate surface-modified gold nanoparticles were successfully prepared by the reduction of HAuCl4 with sodium borohydride NaBH4, and the further growth of the nanoparticles was inhibited by using succinate thiol as a thiol ligand stabilizer Effectively control the particle size in the nanometer range and the particle size distribution range is small, only a single reaction can be obtained a large number of 1 ~ 200nm, the quantum effect of nanoparticles.Using X-ray diffraction, transmission electron microscopy And tunnel scanning microscopy of these particles were tested to confirm that a large number of particles are face-centered cubic structure, thiol ligands formed by chemical adsorption on the gold particle surface layer of monolayers.Tunnel scanning microscopy of this layer of single molecule membrane