Direct arylation polycondensation using Pd(PCy3)2 as a precatalyst in N,N-diethylpropanamide as a reaction solvent afforded three types of the bithiazole-based conjugated polymers that have been difficult to synthesize under previously reported conditions using N,N-dimethylacetamide. The obtained polymers exhibited aggregation properties and high crystallinity. Control of aggregation was a key factor for increasing the power conversion efficiency of the organic photovoltaic devices fabricated from these polymers.
- Junpei Kuwabara
- Masahiro Kuramochi
- Takaki Kanbara
