Phillips 66
Synthesis of polymers for organic photovoltaics

Abstract:

A method of coupling ##STR00001## and 5,5-Y-3,3'-difluoro-2,2'-bithiophene to produce ##STR00002## wherein X can be any known compound capable of coupling with the Y-difluorothiophene and Y is selected from the group consisting of Br, a stannyl group, a boronic ester and a H.