论文标题
薄膜中的块共聚物 - 纳米棒共组装：杆杆相互作用的影响
Block copolymer-nanorod co-assembly in thin films: effects of rod-rod interaction and confinement
论文作者
论文摘要
纳米棒（NRS）的模拟和实验表明，与块共聚物（BCP）融化的共组装导致形成垂直于层状轴的左右NRS的上层结构。对扫描电子显微镜（SEM）的CDSE NRS与聚苯乙烯 - 块状聚糖（甲基丙烯酸甲酯）混合的扫描电子显微镜（SEM）图像进行了验证。然后，它用于研究各向异性纳米颗粒（NP）的共组装，其长度与层状间距相同。探索了BCP/NP的相图以及NR的时间演变。发现略大于层状间距的NR旋转并侧面旋转并以倾斜方向相对于界面进行旋转。发现强烈的相互作用的NP可以主导共同组装，而弱相互作用的纳米颗粒则不太容易形成聚集体并倾向于形成顺序排序的配置。
Simulations and experiments of nanorods (NRs) show that co-assembly with block copolymer (BCP) melts leads to the formation of a superstructure of side-to-side NRs perpendicular to the lamellar axis. A mesoscopic model is validated against scanning electron microscopy (SEM) images of CdSe NRs mixed with polystyrene-block-poly(methyl methacrylate). It is then used to study the co-assembly of anisotropic nanoparticles (NPs) with a length in the same order of magnitude as the lamellar spacing. The phase diagram of BCP/NP is explored as well as the time evolution of the NR. NRs that are slightly larger than the lamellar spacing are found to rotate and organise side-to-side with a tilted orientation with respect to the interface. Strongly interacting NPs are found to dominate the co-assembly while weakly interacting nanoparticles are less prone to form aggregates and tend to form well-ordered configurations.
