Abstract Directed self-assembly of block copolymers (BCPs) with a high Flory-Huggins interaction parameter (χ) can serve as a strategy to creation of spatially-ordered nanostructures below tens of nanometer scale in a simple and cos-effective manner, eliminating the need for external force and conventional lithographic techniques. However, this approach still suffers from expansion of geometrical shapes and materials choices. In the present study, we offer a simple and facile route to formation of scalable nanostructures with hierarchical order via the rapid microphase separation of blends consisting of A-B/B-C diblock copolymers. Such this hierarchically ordered nanostructures (i.e., nanostructure in nanostructure), which cannot be evenly obtained from microphase separation of a single BCP, shed a light on the potential applications such as electronic, optical, and bio-devices. The strategy proposed in this paper can also benefit construction of more diverse and complicated nanostructures by securing control over blending of various BCPs.

中文翻译：

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通过嵌段共聚物共混物的自组装形成分层有序的混合纳米结构

摘要 具有高 Flory-Huggins 相互作用参数 (χ) 的嵌段共聚物 (BCP) 的定向自组装可以作为一种策略，以简单而经济的方式创建几十纳米以下的空间有序纳米结构，消除需要外力和传统的光刻技术。然而，这种方法仍然受到几何形状和材料选择的扩展的影响。在本研究中，我们提供了一种简单易行的途径，通过由 AB/BC 二嵌段共聚物组成的共混物的快速微相分离，形成具有分级顺序的可扩展纳米结构。这种分层有序的纳米结构（即纳米结构中的纳米结构），不能从单个 BCP 的微相分离中均匀地获得，阐明了电子、光学和生物设备等潜在应用。本文提出的策略还可以通过确保对各种 BCP 混合的控制来构建更多样化和更复杂的纳米结构。