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ABSTRACT
In 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.
Additional information
Funding
This work is financially supported by the National Natural Science Foundation of China (21574072, 21675091), the Taishan Young Scholar Program of Shandong Province (tsqn20161027), the Key Research and Development Project of Shandong Province (2016GGX102028, 2016GGX102039, 2017GGX20111), the Shandong Provincial Natural Science Foundation (ZR2016BB33), the Project of Shandong Province Higher Educational Science and Technology Program (J15LC20), the People's Livelihood Science and Technology Project of Qingdao (166257nsh, 173378nsh), the Innovation Leader Project of Qingdao (168325zhc), the Postdoctoral Scientific Research Foundation of China (2017M612192, 2017M610540), the Source Innovation Project of Qingdao (171183jch), and the First Class Discipline Project of Shandong Province.