Abstract Herein, we designed and synthesised a stretchable, solution-processable and crosslinkable π-conjugated polymer (CP) comprised of functional poly(n-butyl acrylate-co-glycidyl methacrylate) (poly(BA-co-GMA) side chains along a poly(3,4-ethylenedioxithiophene) (PEDOT)-based CP backbone. The incorporation of PBA side chains endowed the rigid conjugated backbone with intrinsic softness and adhesiveness as well as superior stretchability of up to 200% strain without formation of cracks. Moreover, the epoxy group-bearing GMA segments enabled the chemical crosslinking between the polymer chains, rendering the resultant polymer films organic solvent-resistant, while still affording 50-fold improved mechanical stretchability in comparison to the brittle non-grafted backbone polymer. This work opens up possibility of developing solution-processable PEDOT analogues for stretchable and wearable electronics applications.

中文翻译：

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高度可拉伸、可溶液加工和可交联的基于聚（3,4-亚乙基二氧噻吩）的共轭聚合物

摘要在此，我们设计并合成了一种可拉伸、可溶液加工和可交联的 π 共轭聚合物 (CP)，由功能性聚（丙烯酸正丁酯-共-甲基丙烯酸缩水甘油酯）（聚（BA-co-GMA）侧链沿聚（3,4-亚乙基二氧噻吩）（PEDOT）基CP主链。PBA侧链的加入赋予刚性共轭主链固有的柔软性和粘附性，以及高达200%应变的优异拉伸性而不会形成裂纹。此外，带有环氧基团的 GMA 链​​段能够实现聚合物链之间的化学交联，使所得聚合物薄膜具有耐有机溶剂性，同时与脆性非接枝主链聚合物相比，仍能提供 50 倍的机械拉伸性能。这项工作开辟了为可拉伸和可穿戴电子应用开发可溶液处理的 PEDOT 类似物的可能性。