Block copolymer brushes are of great interest due to their rich phase behavior and value‐added properties compared to homopolymer brushes. Traditional synthesis involves grafting‐to and grafting‐from methods. In this work, a recently developed “polymer‐single‐crystal‐assisted‐grafting‐to” method is applied for the preparation of block copolymer brushes on flat glass surfaces. Triblock copolymer poly(ethylene oxide)‐b‐poly(l ‐lactide)‐b‐poly(3‐(triethoxysilyl)propyl methacrylate) (PEO‐b‐PLLA‐b‐PTESPMA) is synthesized with PLLA as the brush morphology‐directing component and PTESPMA as the anchoring block. PEO‐b‐PLLA block copolymer brushes are obtained by chemical grafting of the triblock copolymer single crystals onto a glass surface. The tethering point and overall brush pattern are determined by the single crystal morphology. The grafting density is calculated to be ≈0.36 nm⁻² from the atomic force microscopy results and is consistent with the theoretic calculation based on the PLLA crystalline lattice. This work provides a new strategy to synthesize well‐defined block copolymer brushes.

中文翻译：

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通过聚合物-单晶辅助接枝法制造2D嵌段共聚物刷。

与均聚物刷相比，嵌段共聚物刷具有丰富的相行为和增值特性，因此引起了极大的兴趣。传统的合成涉及嫁接和嫁接的方法。在这项工作中，最近开发的“聚合物-单晶-辅助-嫁接”方法用于在平板玻璃表面上制备嵌段共聚物刷。三嵌段共聚物的聚（环氧乙烷） - b -聚（升-丙交酯） - b -聚（3-（三乙氧基硅基）丙基甲基丙烯酸酯）（PEO- b -PLLA- b -PTESPMA）与PLLA合成为刷形态引导组件和PTESPMA作为锚定块。PEO- b‐PLLA嵌段共聚物刷是通过将三嵌段共聚物单晶化学接枝到玻璃表面上而获得的。系链点和总体笔刷图案由单晶形态决定。从原子力显微镜结果计算出的接枝密度为≈0.36nm ^-2，并且与基于PLLA晶格的理论计算相一致。这项工作为合成定义明确的嵌段共聚物刷提供了一种新策略。