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Synthesis and Characterisation of Polypyridine Derivatives: Towards Regioregular PPY

  • Lockhart E. Horsburgh (a1), Andrew P. Monkman (a1), Changsheng Wang (a2) and Martin R. Bryce (a2)


Poly(2,5-pyridinediyl) was prepared from 2-bromo-5-iodopyridine, by a method which combines organomagnesium and organonickel chemistry, and leads to the regioselective formation of poly(2,5-pyridinediyl) (rPPY). The product of the reaction was compared to conventional poly(2,5-pyridinediyl) (PPY), thus enabling us to estimate that rPPY consists of 84±6% head-to-tail linkages. Photophysical properties of rPPY were also measured, and found to be generally similar to those of PPY, although there are some significant differences.



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