New Chemistry Exploited by Coordination Polymerization of Aromatic Monomers

本研究的目的是将通常用于制备脂肪族聚合物的配位-插入聚合的概念扩展到芳香族聚合物的合成。[2.2.1]芳烃在钯催化剂作用下进行配位插入聚合，脱水得到聚(邻位芳烃)S；钯催化的[2.2.1]芳二环烯与一氧化碳共聚，脱水得到芳香族聚酮和聚缩醛。然后在三氯化铁的存在下，将得到的聚邻位芳烃S氧化成石墨烯纳米带。本研究提供了一种合成具有邻位芳烃单元的芳香聚合物的通用而有效的方法。

The purpose of the present research is to expand the concept of coordination-insertion polymerization, which is usually used to prepare aliphatic polymers, to the synthesis of aromatic polymers. The coordination-insertion polymerization of [2.2.1]oxabicyclic alkenes, as aryne equivalents, by palladium catalysts followed by dehydration afforded poly(ortho-arylene)s. The palladium-catalyzed copolymerization of [2.2.1]oxabicyclic alkenes with carbon monoxide followed by dehydration afforded aromatic polyketones and polyacetals. The obtained poly(ortho-arylene)s were then oxidized in the presence of ferric chloride to produce graphene nanorribons. The present study provide a versatile and efficient method to synthesize aromatic polymers having ortho-arylene units.