Abstract
ABSTRACTIn this work, P-DPP, which was a low band gap polymer based on diketopyrrolopyrrole (DPP) and cyclopentadithiophene (CPDT), was synthesized through palladium-catalyzed Stille coupling reaction. Due to the strong electron-donating property of CPDT and strong withdrawing property of DPP, P-DPP exhibited narrow band gap of 1.29 eV. The thermal and optical properties of P-DPP had been carefully investigated.
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