Phthalimide end-capped thienoisoindigo and diketopyrrolopyrrole as non-fullerene molecular acceptors for organic solar cells

Abstract

Two acetylene-bridged molecules, built by grafting phthalimides on thienoisoindigo (<bold>TII</bold>) and diketopyrrolopyrrole (<bold>DPP</bold>) blocks, have been synthesized, characterized and evaluated as electron acceptor materials in air-processed inverted organic solar cells.