Department of Polymer Science and Engineering, Dankook University , 152 Jukjeon-ro, Suji-gu, Yongin-si, Gyeonggi-do 16890, Republic of Korea.
Department of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST) , Ulsan 44919, Republic of Korea.
ACS Nano. 2018 Feb 27;12(2):1642-1649. doi: 10.1021/acsnano.7b08226. Epub 2018 Feb 6.
We present a simple, versatile approach to generate highly ordered nanostructures of block copolymers (BCPs) using rubbed surfaces. A block of poly(tetrafluoroethylene) (PTFE) was dragged across a flat substrate surface above the melting point of PTFE transferring a highly aligned PTFE topographic pattern to the substrate. Si wafer, glass, and polyimide films were used as substrates. Thin films of cylinder-forming asymmetric polystyrene-block-poly(2-vinylpyridine) copolymers (S2VPs) were solvent annealed on the surfaces having the transferred surface pattern to induce their directed self-assembly. Cylinders of P2VP oriented normal to the surface are markedly aligned along the rubbing direction and used as templates to generate extremely uniform arrays of various metallic nanoparticles of gold, silver, and platinum over a large area.
我们提出了一种简单、通用的方法，使用摩擦表面来生成具有高度有序的嵌段共聚物（BCP）纳米结构。将聚四氟乙烯（PTFE）块体在高于 PTFE 熔点的温度下拖动，使其在平坦的基底表面上滑动，从而将高度有序的 PTFE 形貌转移到基底上。硅片、玻璃和聚酰亚胺薄膜被用作基底。具有转移形貌的基底上旋涂形成柱状结构的不对称聚苯乙烯-聚（2-乙烯基吡啶）嵌段共聚物（S2VPs）薄膜，然后进行溶剂退火以诱导其定向自组装。垂直于表面取向的 P2VP 圆柱沿摩擦方向显著对齐，并用作模板，在大面积上生成各种金属纳米粒子（金、银和铂）非常均匀的阵列。
