Rectangular Platelet Micelles with Controlled Aspect Ratio by Hierarchical Self-Assembly of Poly(3-hexylthiophene)-b-poly(ethylene glycol),Macromolecules

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Rectangular Platelet Micelles with Controlled Aspect Ratio by Hierarchical Self-Assembly of Poly(3-hexylthiophene)-b-poly(ethylene glycol)
Macromolecules ( IF 5.1 ) Pub Date : 2020-07-21 , DOI: 10.1021/acs.macromol.0c01092
Rui Qi ₁ , Yulin Zhu ₁ , Liang Han ₁ , Meijing Wang ₁ , Feng He _{1,

2}

Affiliation

Fabrication of two-dimensional (2D) nanomaterials by conjugated polymers attracts increasing interest on account of their potential applications in optoelectronic devices. Precise control over the shape and size of the 2D nanostructures, however, is still challenging. We have developed a series of 2D rectangular micelles by hierarchical self-assembly of poly(3-hexylthiophene) (P3HT)-b-poly(ethylene glycol) (PEG) in i-PrOH. The aspect ratios and the sizes of the 2D rectangular micelles are controlled by the ratios of P3HT and PEG blocks, and the sizes of these 2D micelles are strongly concentration-dependent. Large and complex assembled architectures can be obtained in highly concentrated solutions. It is found that the block copolymers first assemble into fibers and then reorganize into 2D rectangular micelles with π–π interactions playing a key role in the formation of the 2D micelles. This offers a new method to prepare 2D nanostructures with controllable shapes and sizes for organic electronic devices.

中文翻译：

聚（3-己基噻吩）-b-聚乙二醇的分层自组装可控制长宽比的矩形胶束

由于共轭聚合物在光电器件中的潜在应用，通过共轭聚合物制造二维（2D）纳米材料引起了越来越多的兴趣。然而，精确控制2D纳米结构的形状和大小仍然具有挑战性。-我们已经开发通过分层自组装的聚（3-己基噻吩）的一系列2D矩形胶束（P3HT）b在-聚（乙二醇）（PEG）我-PrOH 2D矩形胶束的长宽比和尺寸由P3HT和PEG嵌段的比例控制，这些2D胶束的尺寸强烈依赖浓度。可以在高度集中的解决方案中获得大型而复杂的组装架构。发现嵌段共聚物首先组装成纤维，然后重组为具有π–π相互作用的2D矩形胶束，在2D胶束的形成中起关键作用。这提供了一种制备有机电子设备具有可控形状和尺寸的二维纳米结构的新方法。

更新日期：2020-08-11

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