Li Wei, Sheng Wenbo, Wegener Erik, Du Yunhao, Li Bin, Zhang Tao, Jordan Rainer
Chair of Macromolecular Chemistry, Faculty of Chemistry and Food Chemistry, School of Science, Technische Universität Dresden, Mommsenstr. 4, 01069 Dresden, Germany.
Physik Department, TUM - Technische Universität München, James-Franck-Straße 1, 85748, Garching, Germany.
ACS Macro Lett. 2020 Mar 17;9(3):328-333. doi: 10.1021/acsmacrolett.9b00921. Epub 2020 Feb 18.
A facile and universal oxygen-tolerant, capillary microfluidic-derived, controlled radical polymerization for surface structuring (gradient and patterned polymer brushes) is reported. A syringe pump and a filter paper sheet are used as capillary microfluidic to supply the reaction solution (monomer, solvent, and ligand) to a sandwich-shaped setup by placing a flat copper plate onto an ATRP initiator-modified substrate and resulting in gradient polymer brush formation with controlled thickness, steepness, and grafting area, polymers are showing the high chain-end fidelity. Two different polymer brushes (binary polymer brushes) can be simultaneously grown from both ends of the initiator modified substrate by using this method, which can be used to study the interfacial properties of different polymer brushes.
报道了一种简便通用的耐氧、基于毛细管微流控的可控自由基聚合用于表面结构化（梯度和图案化聚合物刷）的方法。通过将平板铜板放置在原子转移自由基聚合（ATRP）引发剂修饰的基底上，使用注射泵和滤纸作为毛细管微流控装置，将反应溶液（单体、溶剂和配体）供应到三明治形状的装置中，从而形成具有可控厚度、陡度和接枝面积的梯度聚合物刷，聚合物显示出高链端保真度。使用该方法可以从引发剂修饰基底的两端同时生长两种不同的聚合物刷（二元聚合物刷），这可用于研究不同聚合物刷的界面性质。
