Synthesis of a cyclic poly(methyl acrylate) via topological transformation of a [1]rotaxane
Synthesis of a cyclic poly(methyl acrylate) via topological transformation of a [1]rotaxane
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DOI：
10.1039/c9qm00563c
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发表时间：
2019-12-01
影响因子：
7
通讯作者：
Takata, Toshikazu
中科院分区：
文献类型：
--
作者：
Nakazono, Kazuko;Ogawa, Takahiro;Takata, Toshikazu
即使在今天，获得纯形式的环状聚合物仍然很困难。本文公开了纯形式的乙烯基聚合物型环状聚合物的合成方案。通过半[2]轮烷单元对聚丙烯酸甲酯（PMA，M-n，M-NMR 3200）进行末端修饰，再将轮和轴连接起来，合成了一种含有轴和冠醚轮的线型高分子[1]轮烷。在PMA轴上从初始到相对端的轮的位置变化包括通过有效的线性到环状聚合物拓扑变换制备纯环状PMA。
Even today, obtaining a cyclic polymer in pure form remains difficult. This paper discloses a synthetic protocol for a vinyl polymer-type cyclic polymer in pure form. A linear macromolecular [1]rotaxane containing a poly(methyl acrylate) (PMA, M-n,M-NMR 3200) axle and a crown ether wheel was synthesized via the terminal modification of PMA with a semi[2]rotaxane unit and subsequent linking of the wheel and axle components. The positional change of the wheel from the initial to opposite end on the PMA axle comprised the preparation of pure cyclic PMA via an efficient linear-to-cyclic polymer topological transformation.