Synergistic regulation of ester side chains and thermal annealing to enhance electrical conductivity in diketopyrrolopyrrole-based conjugated polymers for thermoelectric generation

Incorporation of a 10% fraction of polar ester side chains into the all-alkyl polymer PDPPB-0 yields a remarkable >3-fold enhancement in the power factor of PDPPC6B-10 and PDPPO4B-10.