Novel aromatic polyketones (8a, 8b) without ether linkage in the main chain were
successfully synthesized via nickel-mediated aromatic coupling polymerization of bis(chlorobenzoyl)dimethoxybiphenyls (3a, 3b). The polymers affording flexible films were obtained in the reaction where
an excess amount of bipyridyl and a stoichiometric amount of the nickel(II) bromide were present. The
resulting polyketones (8a, 8b) have sufficiently high molecular weight (inherent viscosity: 0.59 dL/g for
polyketone 8a; 0.35 dL/g for polyketone 8b) and a highly amorphous nature with a rather high glass
transition temperature: 218 °C for polyketone 8a; 192 °C for polyketone 8b.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.