Mato Yoshinobu, Honda Kohei, Ree Brian J, Tajima Kenji, Yamamoto Takuya, Deguchi Tetsuo, Isono Takuya, Satoh Toshifumi
Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo, 060-8628, Japan.
Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, 060-8628, Japan.
Commun Chem. 2020 Aug 4;3(1):97. doi: 10.1038/s42004-020-00355-4.
The development of precise folding techniques for synthetic polymer chains that replicate the unique structures and functions of biopolymers has long been a key challenge. In particular, spiro-type (i.e., 8-, trefoil-, and quatrefoil-shaped) polymer topologies remain challenging due to their inherent structural complexity. Herein, we establish a folding strategy to produce spiro-type multicyclic polymers via intramolecular ring-opening metathesis oligomerization of the norbornenyl groups attached at predetermined positions along a synthetic polymer precursor. This strategy provides easy access to the desired spiro-type topological polymers with a controllable number of ring units and molecular weight while retaining narrow dispersity (Ɖ < 1.1). This effective strategy marks an advancement in the development of functionalized materials composed of specific three-dimensional nanostructures.
长期以来，开发能够复制生物聚合物独特结构和功能的合成聚合物链精确折叠技术一直是一项关键挑战。特别是，螺型（即8字形、三叶形和四叶形）聚合物拓扑结构因其固有的结构复杂性而仍然具有挑战性。在此，我们建立了一种折叠策略，通过沿着合成聚合物前体在预定位置连接的降冰片烯基的分子内环开环复分解寡聚反应来制备螺型多环聚合物。该策略提供了一种简便的方法来获得具有可控环单元数量和分子量的所需螺型拓扑聚合物，同时保持窄分散度（Ɖ < 1.1）。这种有效策略标志着由特定三维纳米结构组成的功能化材料开发取得了进展。
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