Non‐Fullerene Electron Acceptors Based on Hybridisation of Corannulene and Thiophene‐S,S‐Dioxide Motifs

Abstract

AbstractHerein we show that hybridisation of buckybowl corannulene and thiophene‐S,S‐dioxide motifs is a general approach for the preparation of high electron affinity molecular materials. The devised synthesis is modular and relies on thienannulation of corannnulene‐based phenylacetylene scaffolds. The final compounds are highly soluble in common organic solvents. These compounds also exhibit interesting optical properties such as absorption and emission in the blue/green regions of the electromagnetic spectrum. Importantly, a bis‐S,S‐dioxide derivative exhibits three reversible reductions similar in their strength to the prevalent fullerene‐based electron acceptor phenyl‐C61‐butyric acid methyl ester (PC61BM).