Aiming at the creation of polymers with attractive dynamic properties, herein, rotaxane-branched dendronized polymers (DPs) with rotaxane-branched dendrons attached onto the polymer chains are proposed. Starting from macromonomers with both rotaxane-branched dendrons and polymerization site, targeted rotaxane-branched DPs are successfully synthesized through ring-opening metathesis polymerization (ROMP). Interestingly, due to the existence of multiple switchable [2]rotaxane branches within the attached dendrons, anion-induced reversible thickness modulation of the resultant rotaxane-branched DPs is achieved, which further lead to tunable thermal and rheological properties, making them attractive platform for the construction of smart polymeric materials.

为了创造具有有吸引力的动态性能的聚合物，本文提出了将轮烷支化树枝连接到聚合物链上的轮烷支化树枝化聚合物（DP）。从同时具有轮烷支化树枝和聚合位点的大分子单体出发，通过开环复分解聚合（ROMP）成功合成了目标轮烷支化DP。有趣的是，由于附着的树枝内存在多个可切换的[2]轮烷分支，因此可以实现所得轮烷分支DP的阴离子诱导可逆厚度调节，这进一步导致可调节的热和流变特性，使它们成为有吸引力的平台智能高分子材料的构建。