中国科学技术大学陈殿峰团队，报道了N-（丙二酰氧基）邻苯二甲酰亚胺官能化乙烯基环丙烷的自由基开环聚合——通过选择性脱羧调节材料性能。相关研究成果发表在2024年9月24日出版的《中国化学》。

后聚合改性为调节所得聚合物的材料性能提供了一种重要方法。

该文中，研究人员展示了一种新型的带有侧链N-羟基邻苯二甲酰亚胺氧化还原酯的，乙烯基环丙烷单体的合理设计策略，并探索了其在可见光条件下的自由基开环聚合行为。

所得聚合物的光化学脱羧为在每个重复单元中，获得带有单酯基团的聚乙烯基环丙烷提供了独特的途径。这种脱羧改性极大地重塑了热性能和机械性能，将玻璃态聚合物转化为柔软、延展性和橡胶状材料。

附：英文原文

Title: Radical Ring-Opening Polymerization of N-(Malonyloxy)phthalimide-Functionalized Vinylcyclopropane: Tuning Material Property via Selective Decarboxylation†

Author: Si-Qi Li, Ke Li, Dian-Feng Chen

Issue&Volume: 2024-09-24

Abstract: Post-polymerization modification provides an important approach to tuning the material properties of obtained polymers. In this work, we demonstrated a rational design of novel vinylcyclopropane monomer bearing a pendant N-hydroxylphthalimide redox ester, and explored its radical ring-opening polymerization behavior under visible-light conditions. Photochemical decarboxylation of resulted polymer provided unique access to poly(vinylcyclopropane) bearing single ester group in each repeating unit. This decarboxylative modification has greatly reshaped the thermal and mechanical properties, converting a glassy polymer into a soft, ductile, and rubber-like material.

DOI: 10.1002/cjoc.202400635

Source: https://onlinelibrary.wiley.com/doi/full/10.1002/cjoc.202400635