AbstractPolymer brushes in which one polymer chain end is tethered to a substrate show permanent properties related to the chemical structure of the polymer. However, they cannot accommodate functional molecules in the desired space because of the steric hindrance between neighboring polymer chains. To overcome this problem, the preparation of polymer brushes with ordered nanopores is strongly desired. High-density poly(methyl methacrylate) brushes with well-controlled stereoregularity were prepared using a surface-initiated living anionic polymerization method in the presence of a Lewis acid. A molecular weight range from 6 to 400 K with a narrow polydispersity index was obtained. Grazing incidence wide-angle X-ray diffraction measurements indicated that the polymer brushes formed a helical structure approximately 1 nm in diameter and consisting of encapsulated functional molecules or polymers, leading to the formation of inclusion complexes or stereocomplexes.Preparation of Polymer Brushes with Well-Controlled Stereoregularity and Evaluation of Their Functional Properties High-density poly(methyl methacrylate) (PMMA) brushes with well-controlled stereoregularity were prepared using a surface-initiated living anionic polymerization method in the presence of a Lewis acid. A molecular weight range from 6 K to 400 K with a narrow polydispersity index (PDI) was obtained. Grazing incidence wide-angle X-ray diffraction measurements indicated that the polymer brushes formed a helical structure approximately 1 nm in diameter and consisting of encapsulated functional molecules or polymers, leading to the formation of inclusion complexes or stereocomplexes.

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具有良好控制立构规整性的聚合物刷的制备及其功能特性的评价

摘要聚合物刷子的一个聚合物链端系在基材上，显示出与聚合物化学结构相关的永久性特性。然而，由于相邻聚合物链之间的空间位阻，它们无法在所需空间容纳功能分子。为了克服这个问题，强烈需要制备具有有序纳米孔的聚合物刷。在路易斯酸的存在下，使用表面引发的活性阴离子聚合方法制备了具有良好控制立构规整性的高密度聚（甲基丙烯酸甲酯）刷。获得了具有窄多分散指数的分子量范围从 6 到 400 K。掠入射广角 X 射线衍射测量表明，聚合物刷形成直径约 1 nm 的螺旋结构，由封装的功能分子或聚合物组成，导致形成包合物或立体复合物。受控立体规整性及其功能特性的评估在路易斯酸的存在下，使用表面引发的活性阴离子聚合方法制备了具有良好受控立体规整度的高密度聚甲基丙烯酸甲酯 (PMMA) 刷子。获得了具有窄多分散指数 (PDI) 的 6 K 至 400 K 的分子量范围。