Synthesis of Hyperbranched Polypyridine via a Cross Coupling Approach as an n‐Type π‐Conjugated Polymer
MACROMOLECULAR CHEMISTRY AND PHYSICS(2017)
摘要
The synthesis of an n-type pi-conjugated hyperbranched polymer, hyper-branched polypyridine, is described. The polymer is obtained by copolymerization of 2,4,6-tribromopyridine and 2,5-dibromopyridine via chain-growth condensation polymerization catalyzed by Ni(dppp)Cl-2. The NMR and fourier transform infrared results indicate the successful introduction of the branching unit into polypyridine by this cross coupling approach. The results of UV-vis spectroscopy and cyclic voltammetry suggest that the introduction of the branching unit contributes to a quick response during electrochemical doping due to the diffusion of dopant enhanced by the hyperbranched structure.
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关键词
conjugated polymers,copolymerization,doping,hyperbranched,redox polymers
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