Meurer Josefine, Hniopek Julian, Ahner Johannes, Schmitt Michael, Popp Jürgen, Zechel Stefan, Peneva Kalina, Hager Martin D
Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldstr. 10, 07743 Jena, Germany.
Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany.
Beilstein J Org Chem. 2021 Sep 29;17:2496-2504. doi: 10.3762/bjoc.17.166. eCollection 2021.
The self-healing behavior of two supramolecular polymers based on π-π-interactions featuring different polymer backbones is presented. For this purpose, these polymers were synthesized utilizing a polycondensation of a perylene tetracarboxylic dianhydride with polyether-based diamines and the resulting materials were investigated using various analytical techniques. Thus, the molecular structure of the polymers could be correlated with the ability for self-healing. Moreover, the mechanical behavior was studied using rheology. The activation of the supramolecular interactions results in a breaking of these noncovalent bonds, which was investigated using IR spectroscopy, leading to a sufficient increase in mobility and, finally, a healing of the mechanical damage. This scratch-healing behavior was also quantified in detail using an indenter.
本文介绍了两种基于π-π相互作用、具有不同聚合物主链的超分子聚合物的自修复行为。为此，通过苝四羧酸二酐与聚醚二胺的缩聚反应合成了这些聚合物，并使用各种分析技术对所得材料进行了研究。因此，聚合物的分子结构与自修复能力相关。此外，还使用流变学研究了其力学行为。超分子相互作用的激活导致这些非共价键的断裂，通过红外光谱对其进行了研究，这导致了流动性的充分增加，最终实现了机械损伤的修复。还使用压头对这种划痕修复行为进行了详细量化。
