Laboratory for Applied Catalyst Science and Technology, Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States.
Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States.
ACS Macro Lett. 2022 Mar 15;11(3):402-409. doi: 10.1021/acsmacrolett.2c00108. Epub 2022 Mar 3.
A general and versatile synthetic strategy for producing practical quantities of a wide range of phenyl-group-terminated hetero- and homotelechelic semicrystalline polyethenes and amorphous atactic and semicrystalline isotactic poly(α-olefins) is reported. The phenyl groups serve as synthons for functionalities of additional classes of telechelic polyolefins that can be "unmasked" through simple high yielding postpolymerization reactions. A demonstration of the value of these materials as building blocks for structural classes of polyolefin-based synthetic polymers was provided by syntheses of well-defined polyolefin-polyester di- and triblock copolymers that were shown to adopt microphase-segregated nanostructured mesophases in the condensed phase.
本文报道了一种通用且多功能的合成策略，可用于大量制备各种端基为苯基的杂和同型遥爪半结晶聚烯烃以及无定型和半结晶等规聚（α-烯烃）。苯基基团可用作其他类型遥爪聚烯烃官能团的前体，这些官能团可通过简单高产率的聚合后反应“脱保护”。这些材料作为聚烯烃基合成聚合物结构类型的构建块的价值通过合成具有明确结构的聚烯烃-聚酯二嵌段和三嵌段共聚物得到了证明，这些共聚物在凝聚相中呈现出微相分离的纳米结构中间相。
