Metathesis Cascade‐Triggered Depolymerization of Enyne Self‐Immolative Polymers**
Metathesis Cascade‐Triggered Depolymerization of Enyne Self‐Immolative Polymers**
复制标题
复分解级联 — 引发烯炔自体解聚 — 自分解聚合物**
DOI：
10.1002/anie.202108239
复制
发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Niu, Jia
中科院分区：
文献类型：
--
作者：
Yuan, Jingsong;Giardino, Gavin J.;Niu, Jia
报道了一类新的能够复分解级联触发解聚的烯炔自分解聚合物（SIP）。对模型化合物的研究建立了有效复分解级联反应的1，6-烯炔结构。通过缩聚和迭代指数增长方法制备了包含优化的1，6-烯炔基序的SIP。这些SIP在强酸、碱、亲核试剂中或在高温下表现出优异的稳定性，并且一旦被复分解催化剂触发就可以进行有效和完全的解聚。进一步的研究表明，在烯炔SIPs的链端引入末端烯烃提高了解聚效率，并建立了它们作为刺激响应材料的潜力。
A novel class of enyne self‐immolative polymers (SIPs) capable of metathesis cascade‐triggered depolymerization is reported. Studies on model compounds established 1,6‐enyne structures for efficient metathesis cascade reactions. SIPs incorporating the optimized 1,6‐enyne motif were prepared via both polycondensation and iterative exponential growth approaches. These SIPs demonstrated excellent stability in strong acid, base, nucleophiles, or at elevated temperatures, and can undergo efficient and complete depolymerization once triggered by a metathesis catalyst. Further studies revealed that introducing a terminal alkene to the chain end of the enyne SIPs improved the depolymerization efficiency, and established their potential as stimuli‐responsive materials.