Responsive Gel-like Supramolecular Network Based on Pillar[6]arene鈥揊errocenium Recognition Motifs in Polymeric Matrix

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• 作者：Wei Xia ; Mengfei Ni ; Chenhao Yao ; Xiaoliang Wang ; Dongzhong Chen ; Chen Lin ; Xiao-Yu Hu ; Leyong Wang
• 刊名：Macromolecules
• 出版年：2015
• 出版时间：July 14, 2015
• 年：2015
• 卷：48
• 期：13
• 页码：4403-4409
• 全文大小：505K
• ISSN：1520-5835

文摘

A dual-responsive supramolecular network based on pillar[6]arene鈥揻errocenium redox-controllable recognition motifs in polymeric backbones is constructed with a ferrocenium-functionalized copolymer and a pillar[6]arene copolymer, in which the first example of pillar[6]arene-functionalized copolymer was synthesized through the reversible addition/fragmentation chain-transfer copolymerization of an acrylate-functionalized pillar[6]arene and methyl acrylate. The resulting supramolecular network exhibits dramatically increased viscosity than the non-cross-linked mixtures and demonstrates a gel-like behavior on macroscale with a transient-network behavior revealed by rheology study. Furthermore, the viscoelastic properties of such supramolecular network can be easily controlled by different external stimuli including redox stimulus and competing host/guest reagents.