1,3‐Di‐tert‐butylimidazol‐2‐ylidene initiates the anionic chain‐growth polymerization of methyl sorbate (MS) in toluene. The polymerization is accelerated by an aluminum Lewis acid to afford cyclic poly(MS)s. Subsequently, thiol‐ene click reactions of poly(MS)s with alkanethiols are performed to obtain graft‐like polymers, and the chains can be observed by transmittance electron microscope. This observation, made by Akinori Takasu and colleagues in their article on page 2936, proves that the polymers synthesized by their synthetic strategy are indeed cyclic polymers. (DOI: 10.1002/pol.20200587)

中文翻译：

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封面图片，第58卷，第20期

1,3-二叔丁基咪唑-2-亚基引发了甲苯中山梨酸甲酯（MS）的阴离子链增长聚合反应。通过铝路易斯酸促进聚合，得到环状聚（MS）。随后，进行聚（MS）与链烷硫醇的硫醇烯点击反应，获得接枝状聚合物，并可以通过透射电子显微镜观察链。Akinori Takasu及其同事在其第2936页的文章中所做的观察证明，通过合成策略合成的聚合物确实是环状聚合物。（DOI：10.1002 / pol.20200587）