We demonstrated the facile synthesis of a new class of functionalized polyethylene containing precisely sequenced diphenyl ether moieties via acyclic diene metathesis (ADMET) polymerization of a series of α, ω-diene monomers (M1-M3) with central diphenyl ether segments and subsequent exhaustive hydrogenation. ¹H and ¹³C NMR spectroscopy have provided unambiguous evidence for precise primary architectures of the synthesized monomers and the resulting polymers. The thermal behaviors of all polymers were systematically investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicate that the introduction of diphenyl ether segments significantly enhanced the thermal stability of the polyethylenes. Ring-opening insertion metathesis polymerization (ROIMP) of M1-M3 with cis-cyclooctene was also performed, and after exhaustive hydrogenation, a series of irregularly sequenced copolymers with less regular chain structure and lower diphenyl ether content were yielded. Those copolymers possess a broad and ill-defined melting transition compared with the precisely-defined saturated homopolymers.

我们证明了通过一系列具有中心二苯醚段的α，ω-二烯单体（M1 - M3）的无环二烯复分解（ADMET）聚合反应以及随后的彻底氢化作用，可以轻松合成新型的，包含精确排序的二苯醚部分的官能化聚乙烯。。¹ H和¹³13 C NMR光谱为合成的单体和所得的聚合物的精确一级结构提供了明确的证据。通过热重分析（TGA）和差示扫描量热法（DSC）系统地研究了所有聚合物的热行为。结果表明，引入二苯醚链段显着增强了聚乙烯的热稳定性。M1 - M3与顺式的开环插入复分解聚合（ROIMP）还进行了β-环辛烯的氢化，在彻底氢化后，得到了一系列规则链结构较少，二苯醚含量较低的不规则序列的共聚物。与精确定义的饱和均聚物相比，这些共聚物具有宽泛且不确定的熔融转变。