Space control and catalysis function of gold claster syncesis in nano-reactors of micro-phase separation structure formed by block copolymer

以两亲二嵌段共聚物PEO-b-PMA（Az）为纳米反应器容器，在纳米圆柱体中还原金离子，获得了尺寸和二维取向可控的金纳米颗粒。在PEO-b- pma （Az）薄膜的微相分离结构中，PEO纳米柱垂直于硅片表面。通过优化PEO纳米柱中金离子的掺杂和还原条件，在PEO纳米柱的上部得到了尺寸可控的金纳米颗粒。金纳米颗粒的直径取决于用于还原反应的PEO圆柱体的直径。金纳米颗粒的尺寸在3.2 ~ 4 nm之间。

The size and two-dimensional alignment controlled gold nano-particles were successively obtained by the reduction of gold ions in the nano-cylinders of amphiphilic di-block copolymer, PEO-b-PMA(Az), as nano-reactor vessels. In the micro phase separation structure of PEO-b-PMA(Az) thin film, PEO nano-cylinders aligned normal to the silicon wafer surface. By optimization of gold ion doping in PEO nano-cylinders and reduction conditions, the size controlled gold nano-particles were obtained at the upper site of PEO nano-cylinders. The diameter of gold nano-particles depended on the diameter of PEO cylinder used for the reduction reaction. The size of gold nano-particles were from 3.2 to 4 nm.