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Three A1-D-A2-D regular conjugated terpolymers containing diketopyrrolopyrrole, isoindigo, or thienoisoindigo moieties were synthesized. Each terpolymer with the combination of two different acceptors and thiophene as common donor displayed strong absorption from 500 nm to the near-IR region as well as different molecular energy levels. Among three terpolymers, bulk heterojunction polymer solar cell...
We demonstrated the effective structural control of the conjugation length and various donor moieties using thiophene and selenophene derivatives in a regular terpolymer system and compared the properties with two copolymers of PDPP-SS and PDPP-TT. The three different terpolymers are composed of diketopyrrolopyrrole (DPP)-based polymers such as PDPP-TTS, PDPP-TSS, and PDPP-TTSS. The optical and electronic...
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