共聚物
点击化学
异氰酸酯
表面改性
两亲性
聚合物
解聚
自愈水凝胶
材料科学
嬉戏
化学
组合化学
纳米技术
高分子化学
聚合
有机化学
复分解
聚氨酯
物理化学
作者
Zhicheng Deng,Xiaoli Liang,Elizabeth R. Gillies
标识
DOI:10.1002/anie.202317063
摘要
Abstract Self‐immolative polymers (SIPs) are a class of degradable macromolecules that undergo stimuli‐triggered head‐to‐tail depolymerization. However, a general approach to readily end‐functionalize SIP precursors for programmed degradation remains elusive, restricting access to complex, functional SIP‐based materials. Here we present a “click to self‐immolation” strategy based on aroyl azide‐capped SIP precursors, enabling the facile construction of diverse SIPs with different trigger units through a Curtius rearrangement and alcohol/thiol‐isocyanate “click” reaction. This strategy is also applied to polymer‐polymer coupling to access fully depolymerizable block copolymer amphiphiles, even combining different SIP backbones. Our results demonstrate that the depolymerization can be actuated efficiently under physiologically‐relevant conditions by the removal of the trigger units and ensuing self‐immolation of the p ‐aminobenzyl carbonate linkage, indicating promise for controlled release applications involving nanoparticles and hydrogels.
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