Phillips 66
High performance wide-bandgap polymers for organic photovoltaics

Abstract:

A copolymer comprising a repeat unit A, wherein repeat unit A comprises ##STR00001## a repeat unit B, wherein repeat unit B comprises ##STR00002## and at least one optional repeat unit D, wherein repeat unit D comprises an aryl group. In this copolymer, X.sub.1, X.sub.2, X.sub.3, and X.sub.4 are independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, ester, ketone, amide and aryl groups and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of: H, Cl, F, CN, alkyl, alkoxy, alkylthio, ester, ketone and aryl groups.