中文摘要：

自行设计合成了新颖的苄胺型双链表面活性剂3，4-双十二烷氧基苄胺（DDOBA）．利用DDOBA／正丁醇，正庚烷／甲酸／HAuCl4·4H2O白发形成的水／油（W／O）型微乳液作为微反应器，通过微波辐射下的甲酸还原法成功制备了DDOBA保护的憎水性金纳米粒子，并通过紫外．可见（UV-Vis）光谱、透射电镜（TEM）、高分辨透射电镜（HR-TEM）和X射线衍射（XRD）等方法进行了表征和分析．结果显示，DDOBA既可参与形成稳定的W／O型（油包水型）微乳液，又可作为金纳米粒子的良好保护剂．在合适的微乳液体系组成范围内，用本实验方法可以获得高单分散性的憎水性金纳米粒子，并能在空气／水界面上自动形成大面积短程有序的纳米金二维自组装膜．

英文摘要：

3,4-Didodecyloxybenzylamine （DDOBA）, a novel surfactant with two alkyl tail-chains, was designed and synthesized. DDOBA-capped hydrophobic gold nanoparticles were successfully fabricated using formic acid as a reducing agent in a DDOBA/n-butanolln-heptanelformic acid/HAuCI4-4H2O water/oil （W/O） microemulsion system under microwave irradiation. DDOBA-stabilized gold nanoparticles were characterized by ultraviolet-visible （UV-Vis） spectroscopy, transmission electron microscopy （TEM）, high resolution transmission electron microscopy （HR-TEM）, and X-ray diffraction （XRD）. The experimental results showed that DDOBA not only participated in the formation of a stable W/O microemulsion system, but also became a good protecting agent for gold nanoparticles. Within an appropriate concentration range of components in the W/O microemulsion system, hydrophobic gold nanoparticles with high monodispersity can be obtained using this experimental method and automatically form large areas of ordered monolayer built with DDOBA-capped gold nanoparticles at the air/water interface.