The precision synthesis of cyclic polymers with ultrahigh molar mass (UHMM) and circularity is challenging. Now, a method that involves superbase-mediated living linear-chain growth followed by macromolecular cyclization triggered by protic quenching enables the on-demand production of UHMM cyclic polymers with a narrow dispersity and closed-loop chemical recyclability.

中文翻译：

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超高摩尔质量环状聚合物的精密合成与闭环回收

具有超高摩尔质量（UHMM）和圆形度的环状聚合物的精确合成具有挑战性。现在，一种涉及超碱介导的活性线性链增长，然后由质子猝灭引发的大分子环化的方法能够按需生产具有窄分散性和闭环化学可回收性的UHMM环状聚合物。