A two‐dimensional surface covalent organic framework, prepared by a surface‐confined synthesis using 4,4′‐azodianiline and benzene‐1,3,5‐tricarbaldehyde as the precursors, was used as a host network to effectively immobilize arylenevinylene macrocycles (AVMs). Thus AVMs could be separated from their linear polymer analogues, which are the common side‐products in the cyclooligomerization process. Scanning tunneling microscopy investigations revealed efficient removal of linear polymers by a simple surface binding and solvent washing process.

中文翻译：

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具有表面限制的二维共价有机骨架的亚芳基亚乙烯基大环化合物的分离

通过以4,4'-偶氮二苯胺和苯-1,3,5-三碳甲醛为前体的表面受限合成制备的二维表面共价有机框架用作有效固定亚芳基亚乙烯基大环化合物（AVM）的宿主网络）。因此，AVM可以从其线性聚合物类似物中分离出来，后者是环寡聚过程中常见的副产物。扫描隧道显微镜研究表明，通过简单的表面结合和溶剂洗涤过程可有效去除线性聚合物。