Poly(dinaphthylene ether) was prepared by oxidative coupling polymerization of 1,5-di(naphthoxy)pentane. Polymerizations were conducted in 1,2-dichloroethane in the presence of cobalt (III) acetylacetonate and methanesulfonic acid at room temperature and produced poly(dinaphthylene ether)s with number-average molecular weights up to 10 000. The polymer structure was characterized by 1H and 13C-NMR spectroscopies, and selective coupling was found to occur at the C-4 position of the 1-substituted naphthalene ring. The model reactions were studied to demonstrate the feasibility of polymer formation.
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