Polymer-based room-temperature phosphorescence (RTP) materials are of rapidly growing interest in organic photoelectronics. However, traditional RTP polymers exhibit poor stretchability due to the limitations of typical design rules. Solving the conflict between RTP performance and stretchability and achieving a stretchable RTP polymer is a great challenge. Herein, we develop a feasible strategy for achieving stretchable RTP materials by designing block copolymers and self-assembling them into microphase separation structures. The hard dispersed phases of the copolymer ensure RTP performance, while the continued soft phases determine their stretchability. Impressively, the resulting copolymers exhibit a maximum stretchability of up to 667% and a phosphorescence lifetime of 728 ms. We also developed stretchable circularly polarized organic phosphorescence materials based on this strategy. Given the material’s flexibility and long-lived emission, potential applications in anticounterfeiting and flexible displays were also demonstrated. This work improves the mechanical performance of RTP polymers and paves the way to design flexible multifunctional materials for advanced applications.

中文翻译：

---

基于微相分离的可拉伸柔性室温磷光共聚物


基于聚合物的室温磷光（RTP）材料在有机光电子学领域引起了越来越多的兴趣。然而，由于典型设计规则的限制，传统的RTP聚合物表现出较差的拉伸性。解决RTP性能和拉伸性之间的冲突并获得可拉伸的RTP聚合物是一个巨大的挑战。在此，我们开发了一种可行的策略，通过设计嵌段共聚物并将其自组装成微相分离结构来实现可拉伸 RTP 材料。共聚物的硬分散相确保了 RTP 性能，而连续的软相则决定了其拉伸性。令人印象深刻的是，所得共聚物的最大拉伸率高达 667%，磷光寿命为 728 毫秒。我们还基于该策略开发了可拉伸的圆偏振有机磷光材料。鉴于该材料的灵活性和长寿命发射，还展示了在防伪和柔性显示器方面的潜在应用。这项工作提高了 RTP 聚合物的机械性能，并为设计用于先进应用的柔性多功能材料铺平了道路。