文献类型：期刊文献

英文题名：Semifluorinated Synergistic Nonfouling/Fouling-Release Surface

作者：Xu, Binbin[1];Liu, Yajing[3];Sun, Xiaowen[2];Hu, Jianhua[2];Shi, Ping[3];Huang, Xiaoyu[1]

机构：[1]Chinese Acad Sci, Shanghai Inst Organ Chem, TKey Lab Synthet & Self Assembly Chem Organ Funct, 345 Lingling Rd, Shanghai 200032, Peoples R China;[2]Fudan Univ, Dept Macromol Sci, State Key Lab Mol Engn Polymers, 220 Handan Rd, Shanghai 200433, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：9

期号：19

起止页码：16517

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20172203703347);WOS:【SCI-EXPANDED(收录号:WOS:000401782500066)】；

基金：The authors thank the financial support from National Basic Research Program of China (2015CB931900), International Science & Technology Cooperation Program of China (2014DFE40130), National Natural Science Foundation of China (21474127 and 51373035), Strategic Priority Research Program of Chinese Academy of Sciences (XDB20020000), and Shanghai Scientific and Technological Innovation Project (14JC1493400, 16JC1402500, 14520720100, and 16520710300).

语种：英文

外文关键词：molecular brush; antifouling surfaces; nonfouling fouling-release; spin-casting

摘要：The preparation of a fluorine-containing synergistic nonfouling/fouling-release surface, using a b-PFMA-PEO asymmetric molecular brush possessing both poly(ethylene glycol) (PEO) and poly(2,2,2-trifluoroethyl methacrylate) (PFMA) side chains densely distributed on the same repeat unit along the polymeric backbone, is reported. On the basis of the poly(Br-acrylate-alkyne) macroagent comprising two functionalities (alkynyl and 2-bromopropionate), which is prepared by reversible addition fragmentation chain transfer homopolymerization of a new trifunctional acrylate monomer of Br-acrylate-alkyne, b-PFMA PEO asymmetric molecular brushes are obtained by concurrent atom transfer radical polymerization and Cu-catalyzed azide/alkyne cycloaddition "click" reaction in a one-shot system. A spin cast thin film of the b-PFMA PEO asymmetric molecular brush exhibits a synergistic antifouling property, in which PEO side chains endow the surface with a nonfouling, characteristic, whereas PFMA side chains display the fouling-release functionality because of their low surface energy. Both protein adsorption and cell adhesion tests provided estimates of the antifouling activity of the asymmetric molecular brush surfaces, which was demonstrated to be influenced by the degree of polymerization of the backbone and the length of the PEO and PFMA side chains. With compositional heterogeneities, all asymmetric molecular brush surfaces show considerable antifouling performance with much less protein adsorption (at least 45% off, up to 75% off) and cell adhesion (at least 70% off, up to 90% off) in comparison with a bare surface.