Zhang Kaihuan, Yan Wenqing, Simic Rok, Benetti Edmondo M, Spencer Nicholas D
Laboratory for Surface Science and Technology, Department of Materials , ETH Zurich , 8093 Zurich , Switzerland.
Biointerfaces , Swiss Federal Laboratories for Materials Science and Technology (Empa) , 9014 St. Gallen , Switzerland.
ACS Appl Mater Interfaces. 2020 Feb 5;12(5):6761-6767. doi: 10.1021/acsami.9b21399. Epub 2020 Jan 24.
Surface-initiated controlled radical polymerization mediated by a Cu plate (SI-Cu CRP) emerges as a versatile and efficient method for the functionalization of the exposed surfaces of hydrogels with a wide variety of polymer brushes. When a Cu plate is placed in contact with initiator-bearing hydrogel surfaces in the presence of ligand and monomer and under ambient conditions, it rapidly consumes dissolved oxygen from the reaction mixture, further acting as a source of catalyst and leading to the rapid growth of hydrogel-bound polymer chains. Three types of functional surfaces have been prepared as examples of the wide range of potential materials that can be synthesized in this way, including a hydrogel with a protective, hydrophobic surface, a lubricious hydrogel, as well as a hydrogel with thermally switchable frictional properties.
由铜板介导的表面引发可控自由基聚合反应（SI-Cu CRP），作为一种通用且高效的方法，可用于在水凝胶的暴露表面接上各种各样的聚合物刷进行功能化。当铜板在配体和单体存在的情况下，于环境条件下与带有引发剂的水凝胶表面接触时，它会迅速消耗反应混合物中的溶解氧，进而充当催化剂来源，导致水凝胶结合的聚合物链快速增长。作为通过这种方式可合成的多种潜在材料的示例，已制备了三种类型的功能表面，包括具有保护性疏水表面的水凝胶、润滑性水凝胶以及具有热开关摩擦特性的水凝胶。
