Novel multiresonant diindolophenazine fluorophore as a hole-transport organic semiconductor

A novel multiresonant fluorophore 2,5,10,13-tetraphenyldiindolo[3,2,1-de:3',2',1'-kl]phenazine was investigated computationally using (TD)DFT, synthesized and characterized; it emits blue light with a photoluminescence maximum at 436 nm and a quantum yield of 67%. Organic field-effect transistors based on this compound as an organic semiconductor showed a significant hole mobility of up to 0.023 cm² V⁻¹ s⁻¹, highlighting the potential of multiresonant fluorophores as multifunctional compounds that can be used in both charge-transporting and light-emitting layers of organic (opto)electronic devices.