Formation of uniform size ultra-fine metal particles using reverse micelles and self-organization of two-dimensional arrays

1. 均匀粒径超细颗粒的形成用二十二烷基二甲基溴化铵（DDAB）组成的反胶束实现了均匀粒径超细颗粒的形成。通过改变反胶束池中溶解的金属离子的浓度，可以控制超细颗粒的大小。DDAB反胶束体系在形成粒径均匀的超细颗粒方面优于由二油基磷酸体系组成的反胶束体系。超细颗粒二维阵列用二氧化硅颗粒测量了微颗粒表面改性对π-A关系的影响。通过将溶解于氯仿中的二氧化硅颗粒进行扩散，实现了二氧化硅颗粒的均匀分散，当表面压力超过密封状态所对应的压力时，二氧化硅颗粒在疏水玻璃板上形成了二维阵列。采用以下方法实现了纳米金颗粒的二维阵列。用手将TEM网格平行于槽表面。透射电镜网的表面与槽上的颗粒层短暂接触并被抬升。我们可以在大范围内得到金粒子的二维阵列。金颗粒的纳米线和网状结构的形成通过控制水相中纳米金颗粒形成过程中还原剂的浓度，成功地合成了由这些纳米线组成的纳米线和网状结构。网络结构均匀覆盖二维空间。

1. Formation of uniform size ultra-fine particlesFormation of uniform size ultra-fine particles was achieved using reverse micelles composed of di-dodecyldimethylammonium bromide (DDAB). The size of ultra-fine particles can be controlled by changing the concentration of metal ions which were solubilized into the water pool of the reverse micelles. DDAB reverse micellar system was superior than the reverse micellar system composed of di-oleylphosphate system for the formation of uniform size ultra-fine particles.2. Two-dimensional array of ultra-fine particlesThe effect of surface modification of fine particles on π-A relationship was measured using silica particles. Uniform dispersion of silica particles was achieved by spreading silica particles dissolved in chloroform, and two-dimensional array of silica particles on the hydrophobized glass plate was attained when the surface pressure exceeded the pressure corresponding to the closed pack state. Two-dimensional array of nano-size gold particles was achieved by the following method. The TEM mesh was brought parallel to the surface of the trough by hand. The surface of the TEM mesh was briefly contacted with the particle layer on the trough and lifted off. We could get two-dimensional array of gold particles in a wide range area.3. Nano-wires and network structure formation of gold particlesNano-wires and network structure composed of these nanowires were successfully synthesized by controlling the concentration of reducing agent in the formation process of nano-size gold particles in the aqueous phase. The network structure covered two-dimensional space uniformly.