Yan Wenqing, Fantin Marco, Ramakrishna Shivaprakash, Spencer Nicholas D, Matyjaszewski Krzysztof, Benetti Edmondo M
Laboratory of Surface Science and Technology, Department of Materials , Swiss Federal Institute of Technology (ETH Zürich) , Vladimir-Prelog-Weg 1-5/10 , Zurich CH-8093 , Switzerland.
Department of Chemistry , Carnegie Mellon University , 4400 Fifth Avenue , Pittsburgh , Pennsylvania 15213 , United States.
ACS Appl Mater Interfaces. 2019 Jul 31;11(30):27470-27477. doi: 10.1021/acsami.9b09529. Epub 2019 Jul 18.
Cu-mediated surface-initiated atom transfer radical polymerization (Cu SI-ATRP) is a highly versatile, oxygen-tolerant, and extremely controlled polymer-grafting technique that enables the modification of flat inorganic surfaces, as well as porous organic and polymeric supports of different compositions. Exploiting the intimate contact between a copper plate, acting as a source of catalyst and reducing agent, and an initiator-bearing support, Cu SI-ATRP enables the rapid growth of biopassive, lubricious brushes from large flat surfaces, as well as from various organic supports, including cellulose fibers and elastomers, using microliter volumes of reaction mixtures, and without the need for deoxygenation of reaction mixtures or an inert atmosphere. Thanks to a detailed analysis of its mechanism and the parameters governing the polymerization process, polymer brush growth by Cu SI-ATRP can be precisely modulated and adapted to be applied to morphologically and chemically different substrates, setting up the basis for translating SI-ATRP methods from academic studies into technologically relevant surface-modification approaches.
铜介导的表面引发原子转移自由基聚合（Cu SI-ATRP）是一种用途广泛、耐氧且可控性极强的聚合物接枝技术，可用于修饰平整的无机表面以及不同成分的多孔有机和聚合物载体。利用充当催化剂和还原剂来源的铜板与带有引发剂的载体之间的紧密接触，Cu SI-ATRP能够使用微升体积的反应混合物，在大型平整表面以及包括纤维素纤维和弹性体在内的各种有机载体上快速生长具有生物惰性、润滑性的刷状聚合物，且无需对反应混合物进行脱氧处理或处于惰性气氛中。由于对其机理和控制聚合过程的参数进行了详细分析，通过Cu SI-ATRP实现的聚合物刷生长可以得到精确调控，并适用于形态和化学性质不同的底物，从而为将SI-ATRP方法从学术研究转化为具有技术相关性的表面改性方法奠定了基础。
