Diketopyrrolopyrrole dye

Diketopyrrolopyrroles (DPPs) are organic dyes and pigments based on the heterocyclic dilactam 2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione,[1][2][3] widely used in optoelectronics.

More recently, DPP derivatives have been also investigated as promising fluorescent dyes for bioimaging applications,[4] as well as components of materials for use in organic electronics.

The modified DDP shows high fluorescence and the emission wavelength is adjustable by change the aromatic group at 3 and 6 positions.

Both electron donor group, such as thiophene, and expanding of the conjugated system increase the emission wavelength.

[14][15][16][17] Some DPP derivatives show aggregation induced emission[18] and were used as effective fluorescent sensors, in organic solar cells.