High-performance wide bandgap polymer for organic photovoltaics

摘要

Repetition unit A, but repetition unit A is [Chemical formula 1] Including; Repetition unit B, but repetition unit B is [Chemical 2] Or [Chemical 3] Consists of; and at least one optional repeating unit D, wherein the repeating unit D comprises an aryl group. , X ₁ , X ₂ , X ₃ , and X ₄ are: independent of the group consisting of H, Cl, F, CN, alkyl, alkoxy, esters, ketones, amides and aryl groups. is selected, and _{R 1, R 2, R 3} , R 4, R 5 and _{R 6:} H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, independently from the group consisting of ketones and aryl groups The copolymer selected. [Selection diagram] Fig. 1