Optimized synthesis of fluorinated dithienyl-diketopyrrolopyrroles and new copolymers obtained by direct heteroarylation polymerization
Diketopyrrolopyrrole-based (DPP-based) polymers are a very important class of materials for both organic solar cells (OSCs) and organic field-effect transistors (OFETs). Here we report an optimised synthesis of fluorinated dithienyl-diketopyrrolopyrrole (fDT-DPP) and three new highly fluorinated fDT-DPP-based materials obtained from direct heteroarylation polymerization (DHAP). This study clearly indicates the lower HOMO and LUMO energy levels for the resulting fluorinated DPP-based polymeric materials together with good ambipolar properties. However, highly fluorinated polymers show reduced solubility in common organic solvents.
- This article is part of the themed collection: Organic Electronics