Influence of synthetic pathway, molecular weight and side chains on properties of indacenodithiophene-benzothiadiazole copolymers made by direct arylation polycondensation

Poly(indacenodithiophene-alt-benzothiadiazole) with different side chains and molecular weight is made using two different pathways in which all C–C coupling steps are achieved by C–H activation, and the products are comprehensively investigated.