Park Jong-Il, Lee Woo-Ram, Bae Sung-Soo, Kim Youn Joong, Yoo Kyung-Hwa, Cheon Jinwoo, Kim Sehun
Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.
J Phys Chem B. 2005 Jul 14;109(27):13119-23. doi: 10.1021/jp0443308.
In this paper, we describe an easy and reliable method for the production of patterned monolayers of Co nanoparticles. A two-dimensional monolayer of Co nanoparticles is fabricated by spreading a nanoparticle solution over an air-water interface and then transferring it to a hydrophobic substrate by using the Langmuir-Blodgett (LB) method. Transmission electron microscopy (TEM) was used to show that, with increasing surface pressure, the Co nanoparticles become well-organized into a Langmuir monolayer with a hexagonal close-packed structure. By controlling the pH of the subphase, it was found that a monolayer of Co nanoparticles with long-range order could be obtained. Further, by transferring the Langmuir monolayer onto a poly(dimethoxysilane) (PDMS) mold, the selective micropatterning of the Co nanoparticles could be achieved on a patterned electronic circuit. The electronic transport properties of the Co nanoparticles showed the ohmic I-V curve.
在本文中，我们描述了一种制备钴纳米颗粒图案化单层的简便可靠方法。通过将纳米颗粒溶液铺展在空气-水界面上，然后使用朗缪尔-布洛杰特（LB）法将其转移到疏水基底上，制备出二维钴纳米颗粒单层。透射电子显微镜（TEM）用于表明，随着表面压力的增加，钴纳米颗粒很好地组织成具有六方密堆积结构的朗缪尔单层。通过控制亚相的pH值，发现可以获得具有长程有序的钴纳米颗粒单层。此外，通过将朗缪尔单层转移到聚（二甲氧基硅烷）（PDMS）模具上，可以在图案化电子电路上实现钴纳米颗粒的选择性微图案化。钴纳米颗粒的电子输运性质显示出欧姆I-V曲线。
