Synthetic strategies and self-assembly properties of thiophene-functionalized hydrogen-bonded diketopyrrolopyrrole derivatives

The optoelectronic properties of thiophene-capped diketopyrrolopyrrole (DPP) derivatives can be tuned by adding differ-ent electroactive moieties to the main central core or by regulating their self-assembly through the interplay of noncova-lent interactions. While the alkylation of the DPP lactam rings is common, the alkylation of the thiophene rings on the DPP extremities is challenging, especially when supramolecular moieties are incorporated. Here we report an efficient synthetic method towards the thiophene functionalization with amide-containing substituents of single core thiophene-capped DPP derivatives.