Dong Wook Chang, Seo-Jin Ko, Gi-Hwan Kim, Seo-Yoon Bae, Jin Young Kim, Liming Dai and Jong-Beom Baek Molecular engineering of conjugated polymers for solar cells and field-effect transistors: Side-chain versus main-chain electron acceptors Journal of Polymer Science Part A: Polymer Chemistry 50
Two model polymers with the same chemical composition except the location of acceptor, that is, side-chain (S-polymer) or main-chain (M-polymer), have been synthesized. Better performaces in polymer solar cells (PSCs) and field-effect transistor (FETs) were obtained from M-polymer, due to longer effective conjugation length and more coplanar structure. This study provides important insights into the design of ideal structure-–property relationships for conjugated polymers in FETs and PSCs.
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