Highly electron deficient diketopyrrolopyrroles

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.

Automated summary

The study reports the synthesis, spectroelectrochemical, and structural characteristics of highly electron-accepting diketopyrrrolopyrrole (DPP) molecules with adjoining pyridinium rings, as well as their low toxicity assessment. The compounds exhibit reversible electrochemistry and a significant increase in molar extinction coefficient upon electrochemical reduction in one subfamily.