ETH Zürich, Vladimir-Prelog-Weg 1-5/10, 8093 Zürich, Switzerland.
J Am Chem Soc. 2021 Dec 22;143(50):21331-21339. doi: 10.1021/jacs.1c09884. Epub 2021 Dec 6.
Porous organic materials (polymers and COFs) have shown a number of promising properties; however, the lability of their linkages often limits their robustness and can hamper downstream industrial application. Inspired by the outstanding chemical, mechanical, and thermal resistance of the 1D polymer poly(phenylene sulfide) (PPS), we have designed a new family of porous poly(aryl thioether)s, synthesized via a mild Pd-catalyzed C-S/C-S metathesis-based method, that merges the attractive features common to porous polymers and PPS in a single material. In addition, the method is highly modular, allowing to easily introduce application-oriented functionalities in the materials for a series of environmentally relevant applications including metal capture, metal sensing, and heterogeneous catalysis. Moreover, despite their extreme chemical resistance, the polymers can be easily recycled to recover the original monomers, offering an attractive perspective for their sustainable use. In a broader context, these results clearly demonstrate the untapped potential of emerging single-bond metathesis reactions in the preparation of new, recyclable materials.
多孔有机材料（聚合物和 COFs）表现出许多有前景的性质；然而，其键的不稳定性通常限制了它们的坚固性，并可能阻碍下游的工业应用。受 1D 聚合物聚（亚苯基硫醚）（PPS）的出色化学、机械和耐热性的启发，我们设计了一类新的多孔聚（芳基硫醚），通过温和的 Pd 催化 C-S/C-S 交叉复分解方法合成，将多孔聚合物和 PPS 的常见吸引人的特征融合在一种材料中。此外，该方法具有高度的模块性，允许在材料中轻松引入面向应用的功能，用于一系列与环境相关的应用，包括金属捕获、金属传感和多相催化。此外，尽管这些聚合物具有极强的耐化学性，但它们可以很容易地回收以回收原始单体，为其可持续利用提供了有吸引力的前景。从更广泛的角度来看，这些结果清楚地表明，新兴的单键复分解反应在制备新的可回收材料方面具有未被开发的潜力。
