Palladium-copper-promoted Stille-type cross-coupling reactions between alpha-stannylphospholes and alpha-iodophospholes afforded alpha,alpha'-linked oligophospholes and polyphosphole efficiently. It has been revealed that the polyphosphole P-oxide possesses an extremely narrow band gap and a high electron-accepting ability as compared to polythiophene.
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Synthesis of alpha,alpha'-linked oligophospholes and polyphospholes by using Pd-CuI-promoted Stille-type coupling.
Org Lett
June 2010
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan.
Palladium-copper-promoted Stille-type cross-coupling reactions between alpha-stannylphospholes and alpha-iodophospholes afforded alpha,alpha'-linked oligophospholes and polyphosphole efficiently. It has been revealed that the polyphosphole P-oxide possesses an extremely narrow band gap and a high electron-accepting ability as compared to polythiophene.
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