Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany.
Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany.
Angew Chem Int Ed Engl. 2017 Mar 27;56(14):4047-4051. doi: 10.1002/anie.201610406. Epub 2017 Mar 7.
The synthesis and comprehensive characterization of a systematic series of cleft-type anion receptors imbedded into a polymeric architecture is presented. For the first time, isothermal calorimetric titrations on polymeric halogen-bond-based donors were exploited to evaluate the dependence of the anion affinity on different key parameters (i.e. monomeric versus polymeric receptor, halogen versus hydrogen bonding, charge assistance). The combination of these donor systems with a copolymer bearing accepting carboxylate groups led to supramolecular cross-linked polymer networks showing excellent intrinsic self-healing behavior. FT-Raman spectroscopy and nano-indentation measurements were utilized to clarify the thermally induced self-healing mechanism based on the formation of halogen bonds. These first self-healing materials based on halogen bonds pave the way for new applications of halogen-bond donors in polymer and material science.
本文呈现了一系列嵌入聚合结构中的、具有典型结构的阴离子受体的合成和综合特性。本文首次利用基于卤键的聚合给体的等温热力学滴定，评估了阴离子亲和力对不同关键参数（即单体与聚合受体、卤键与氢键、电荷辅助）的依赖性。将这些供体系统与带有接受羧酸酯基团的共聚物结合，得到了具有优异固有自修复性能的超分子交联聚合物网络。傅里叶变换拉曼光谱和纳米压痕测量被用于基于卤键形成的热诱导自修复机制的阐明。这些基于卤键的首个自修复材料为卤键供体在聚合物和材料科学中的新应用铺平了道路。
