【作者】 张兴旺； 屈盛； 陈诺夫；

【Author】 ZHANG Xing-wang, QU Sheng, CHEN Nuo-fu (Key Lab. of Semiconductor Material Sciences, Institute of Semiconductors, CAS, Beijing 100083,China)

【机构】 中国科学院半导体研究所材料与器件重点实验室；

【摘要】 利用双亲嵌段共聚物PS-b-P2VP胶束自组装的方法,在硅衬底表面形成一单层六角有序的负载金盐的反胶束阵列,氧等离子体刻蚀能在保持颗粒有序性的同时,完全去除聚合物并使金盐还原为单质金, 从而在衬底表面得到裸露的金纳米颗粒。这一方法能在多种不同衬底上制备各种金属纳米颗粒阵列,它们具有颗粒尺寸均匀、六角有序分布的优点。颗粒的大小(1-20nm)和间距(30-200nm)可通过嵌段共聚物的链长、金盐的浓度及样品的提拉速度进行调控。更多还原

【Abstract】 Hexagonally ordered arrays of Au-salt loaded micelle on Si were prepared by the self assembly of the diblock copolymer PS-b-P2VP in solution and a dip coating process. The polymer matrix was removed by exposing the micellar arrangement to an appropriate oxygen plasma, which also allow the gold salt to be reduced to the metallic gold and the lateral order of the resulting Au nanoparticles is conversed. The micellar arrays loading various metal salts exhibiting a significant hexagonal order can de prepared on various substrates with tailored intermicellar distances and heights. The sizes (1-20nm) and distances (30-200nm) of nanoparticles can be adjusted by the amount of metal salt added to the micellar solution, the dipping velocity and the length of the involved copolymer, respectively.更多还原