Highly electron deficient diketopyrrolopyrroles.
Joshua HumphreysFerdinando MalagrecaPaul A HumeE Stephen DaviesStephen P ArgentTracey D BradshawDavid B AmabilinoPublished in: Chemical communications (Cambridge, England) (2023)
The synthesis, spectroelectrochemical and structural characteristics of highly electron-accepting diketopyrrrolopyrrole (DPP) molecules with adjoining pyridinium rings is reported, along with an assessment of their toxicity, which is apparently low. The compounds show reversible electrochemistry and in one subfamily a massive increase in molar extinction coefficient upon electrochemical reduction.