Cage polymers, a type of special cyclic polymer with an intriguing three-dimensional topology and internal cavity, have attracted increasing attention. However, because of the complicated topological structure, precise preparation of cage polymers is a formidable challenge. Herein, an effective and versatile synthetic strategy was developed to precisely construct complex topological polymers with a well-defined structure and high molecular weight, including three-arm cage, three-arm cage-brush, bi(three-arm) cage, and six-arm cage polymers, by a ring-opening metathesis polymerization-based blocking-cyclization technique using different short polymeric ladderphanes containing multiple living ends as the initial and end-cyclizing motifs, which was the key factor in simply tuning the polymer topology. Moreover, bi- and six-arm lantern polymers were readily derived from the corresponding cage polymers. By comparison of the performance differences between these novel polymers, the dependence of the properties on the topology was revealed. Therefore, this work provided a platform for constructing complex topological polymers with unique topological-enhancing phosphorescent performance and mechanical properties.

中文翻译：

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具有拓扑增强磷光的 Complex Cage、Cage-Brush 和 Lantern 聚合物


笼状聚合物是一种特殊的环状聚合物，具有有趣的三维拓扑结构和内腔，越来越受到关注。然而，由于拓扑结构复杂，精确制备笼状聚合物是一项艰巨的挑战。在此，开发了一种有效且通用的合成策略，通过基于开环复分解聚合的封闭-环化技术，精确构建具有明确结构和高分子量的复杂拓扑聚合物，包括三臂笼、三臂笼刷、双（三臂）笼和六臂笼聚合物，使用包含多个生命末端的不同短聚合物阶梯烷作为初始和末端环化基序， 这是简单地调整聚合物拓扑结构的关键因素。此外，双臂和六臂灯笼聚合物很容易从相应的笼式聚合物中衍生出来。通过比较这些新型聚合物之间的性能差异，揭示了性能对拓扑结构的依赖性。因此，这项工作为构建具有独特拓扑增强磷光性能和机械性能的复杂拓扑聚合物提供了一个平台。