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

1.粒径均匀的超细粒子的形成采用由双十二烷基二甲基溴化铵（DDAB）组成的反胶束体系，实现了粒径均匀的超细粒子的形成。通过改变溶于反胶束水池中的金属离子浓度，可以控制超细粒子的粒径。DDAB反胶束体系比二油基磷酸酯反胶束体系上级形成粒径均匀的超细微粒.超细颗粒的二维排列以二氧化硅颗粒为例，测定了超细颗粒表面改性对π-A关系的影响。通过分散溶解在氯仿中的二氧化硅颗粒来实现二氧化硅颗粒的均匀分散，并且当表面压力超过对应于密堆状态的压力时，获得二氧化硅颗粒在疏水化玻璃板上的二维阵列。通过以下方法实现纳米尺寸金颗粒的二维阵列。用手使TEM网片平行于槽的表面。TEM网的表面与槽上的颗粒层短暂接触并被剥离。我们可以在很宽的范围内得到金粒子的二维阵列.金纳米线和网络结构的形成通过控制还原剂在水相中形成纳米金颗粒过程中的浓度，成功地合成了纳米线和由这些纳米线组成的网络结构。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.