Front Cover: In article number 1900532 by Byoung Gak Kim, Jong‐Chan Lee, and co‐workers, the carbonization of carboxylate‐functionalized polymers of intrinsic microporosity (PIM‐COOH) is scrutinized. Notably, all the heattreated PIMs retain their microporosity and show a different oxygen‐to‐carbon ratio. In nanofiltration tests, the water flux is enhanced after pyrolysis due to their low friction property, while maintaining high salt rejection.

中文翻译：

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内在微孔性的羧酸盐官能化聚合物的炭化

封面：Byoung Gak Kim，Jong-Chan Lee和他的同事在编号为1900532的文章中，对固有微孔性（PIM-COOH）的羧酸酯化聚合物的碳化进行了审查。值得注意的是，所有经过热处理的PIM均保持其微孔性，并显示出不同的氧碳比。在纳滤试验中，热解后的水通量由于其低摩擦性能而得到增强，同时又保持了较高的脱盐率。